support maintenance manual for tank periscope: m32 … · army tm 9-1240-379-34 marine corps tm...

ARMY TM 9-1240-379-34MARINE CORPS TM 04332A-34

SUPERSEDES COPIES DATED DECEMBER 1977 AND JUNE 1964

TECHNICAL MANUAL

DIRECT SUPPORT AND GENERALSUPPORT MAINTENANCE MANUAL

FORTANK PERISCOPE:

M32 (1240-00-766-4287)M32C (1240-00-762-9335)M32E1 (1240-01-016-2272)

M32CE1 (1240-01-092-7910)

TROUBLESHOOTING(DIRECT SUPPORT)

Page2-1

MAINTENANCEPROCEDURES(DIRECT SUPPORT)

Page2-8

TROUBLESHOOTING(GENERAL SUPPORT)

Page3-1

MAINTENANCEPROCEDURES(GENERAL SUPPORT)

Page3 - 3

M32E1/M32CE1 M32/M32CTANK PERISCOPE TANK PERISCOPE

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited

HEADQUARTERS, DEPARTMENT OF THE ARMYHEADQUARTERS, US MARINE CORPS

MAY 1988

WARNING

● Compressed nitrogen gas is used for purging and charging of equipment. Keepface and body clear of release valves. Death or severe injury may result if per-sonnel fail to observe safety precautions. High pressure tanks can explode andkill people. Personnel shall be trained in the safe use, handling, and storage ofcompressed gases and gas cylinders.

● Various solvents and compounds which produce toxic vapors are used through-out this manual. Do not use toxic vapor producing agents in a confined area.Avoid long periods of breathing toxic vapors and avoid contact with the skin.

● Dry cleaning solvent is flammable and should not be used near an open flameor in a smoking area. Use only in well ventilated areas. This solvent evaporatesquickly and has a drying effect on the skin. When used without gloves it maycause cracks in the skin and in some cases mild irritation or inflammation.

● When performing maintenance on the daylight body assembly, prism cell, andoptical cell assembly be aware that detent plunger is under spring tension. Becareful when removing or injury may result.

● When performing maintenance on the head assembly, be careful when remov-ing optical instrument window to avoid injury.

● For information on first aid, refer to FM 21-11.

TECHNICAL MANUAL

No. 9-1240-379-34No. 04332A-34

❋ ARMY TM 9-1240-379-34❋ MARINE CORPS TM 04332A-34

HEADQUARTERSDEPARTMENT OF THE ARMY

HEADQUARTERSUS MARINE CORPS

Washington, DC, 12 May 1988

Direct Support and General Support Maintenance Manual

For

TANK PERISCOPE:M32 (1240-00-766-4287)

M32C (1240-00-762-9335)M32E1 (1240-01-016-2272)

M32CE1 (1240-01-092-7910)

REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS

You can help improve this manual. If you find any mistakes or if you know of a way toimprove the procedures, please let us know. Mail your letter, or DA Form 2028(Recommended Changes to Publications and Blank Forms), or DA Form 2028-2 locatedin the back of this manual direct to: Commander, US Army Armament, Munitions andChemical Command, ATTN: AMSMC-MAS, Rock Island, IL 61299-6000. A reply willbe furnished to you.

USMC users submit NAVMC Form 10772 direct to: Commanding General, MarineCorps Logistics Base (code 850), Albany, GA 31704-5000.

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.

Page

CHAPTER 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Section I General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Section II Repair Parts, Special Tools, TMDE,

and Support Equipment . . . . .Section Ill Equipment Description and Data .Section IV Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHAPTER 2 DIRECT SUPPORT MAINTENANCE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31-8

Section I Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section II Maintenance Procedures .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTRUCTIONS . . . . . . . . . . . . . . . . 2-1

2-1

2-8

Section Ill Preparation for Storage or Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49Section IV Pre-Embarkation Inspection of Materiel in Units Alerted for

Overseas Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50

❋ This manual supersedes TM 9-1240-379-34, December 1977, and TM 9-1240-313-34, June1964, including all changes.

i


CHAPTER

Section

Section

Section

APPENDIX

APPENDIX

SectionSection

APPENDIX

3

I

II

Ill

A

GENERAL SUPPORT MAINTENANCE INSTRUCTIONS . . . . . . . . . . . . . . . . .

B

III

C

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Final Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EXPENDABLE/DURABLE SUPPLIES ANDMATERIALS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Expendable/Durable Supplies and

Materials List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ILLUSTRATED LIST OF MANUFACTURED ITEMS . . . . . . . . . . . . . . . .

Page

3-1

3-1

3-3

3-23

A-1

B-1

B-1

B-2

C-1

A L P H A B E T I C A L I N D E X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INDEX 1

i i


CHAPTER 1INTRODUCTION

Section I. GENERAL INFORMATION

M32E1/M32CE1TANK PERISCOPE

1-1. SCOPE.

a. Type of Manual. Direct support andgeneral support maintenance.

b. Model Number and Equipment Name.M32, M32C, M32E1, and M32CE1 TankPeriscopes.

c. Purpose of Equipment. Provides a uni-ty power system for wide, close-up vision ofterrain and a visible 8X system for sightingdistant targets.

1-2 . MAINTENANCE FORMS,RECORDS, AND REPORTS.

Department of the Army forms and pro-cedures used for equipment maintenance willbe those prescribed by DA PAM 738-750,The Army Maintenance Management System

M32/M32CTANK PERISCOPE

(TAMMS). USMC users will refer to TM4700-15/1, Equipment Record Procedures.

1-3 . DESTRUCTION OF ARMYMATERIEL TO PREVENT ENEMYUSE.

Procedures and materials used for thedestruction of the periscope to preventenemy use will be found in TM 750-244-6.

1-4. PREPARATION FOR STORAGE ORSHIPMENT.

Requirements for storage or shipment arelisted on page 2-49.

1-1


1-5. OFFICIAL NOMENCLATURE,NAMES, AND DESIGNATIONS,

This listing includes nomenclaturereferences used in this manual.

C O M M O N N A M E

Cap assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Deflection boresight knob assembly . . . . . . . . . . . . . . . . . . . .Elevation boresight knob assembly . . . . . . . . . . . . . . . . . . . .Elevation boresight knob assembly . . . . . . . . . . . . . . . . . . . . . . .Purging screw . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .RETICLE control knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .RETICLE variable resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TUBE control knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TUBE variable resistor . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .

1-6. REPORTING EQUIPMENT IM-PROVEMENT RECOMMENDA-TIONS (EIR).

If your tank periscope needs improvement,let us know. Send us an EIR. You, the user,are the only one who can tell us what youdon’t like about your equipment. Let us

Section Il. REPAIR

OFFICIAL NOMENCLATURE

Periscope subassemblyKnob assemblyElevation knob assemblyBoresighting knob assemblyMachine screwKnobVariable resistorKnobVariable resistor

know why you don’t like the design. Put iton an SF 368 (Quality Deficiency Report).Mail it to us at Commander, US Army Arma-ment, Munitions and Chemical Command,ATTN: AMSMC-QAD, Rock Island, IL61299-6000. We’ll send you a reply. USMCusers shall submit SF 368 in accordancewith MCO 4855.10.

PARTS, SPECIAL TOOLS,TMDE, AND SUPPORT EQUIPMENT

1-7 . COMMON TOOLS AND 1-9. REPAIR PARTS.EQUIPMENT.

Repair parts are listed and illustrated in theFor authorized common tools and equipment repair parts and special tools list (TMrefer to the Modified Table of Organization 9-1240-379-34P) covering direct supportand Equipment (MTOE) applicable to your and general support maintenance for thisunit. equipment.

1-8. SPECIAL TOOLS, TMDE, ANDSUPPORT EQUIPMENT.

Refer to appendix C of this manual formanufacturing instructions for fabricatedtools.

1-2


Section Ill. EQUIPMENT DESCRIPTION AND DATA

1 - 1 0 . EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES.

a. M32 and M32C Tank Periscope Characteristics.

(1)

(2)

(3)

Visible 8X system:

US CustomaryMagnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8XField of view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8°Effective focal length (EFL) of

objective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.813 in.Exit pupil diameter . . . . . . . . . . . . . . . . . . . . . . . . 0.200 in.Clear eye distance . . . . . . . . . . . . . . . . . . . . . . . . 0.63 in.Diopter (one) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.031 in.

Unity power system:

Horizontal field of view . . . . . . . . . . . . . . . . . . . . . 30°32 '

Vertical field of view . . . . . . . . . . . . . . . . . . . . . . . 5°48'

Infrared 8X system:

Magnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8XField of view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8°EFL of objective . . . . . . . . . . . . . . . . . . . . . . . . . . 7.8 in.Image intensifier magnification . . . . . . . . . . . . . . . 7.7 in.Clear eye distance . . . . . . . . . . . . . . . . . . . . . . . . 0.63 in.Diopter (one) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.017 in.

b. M32E1 and M32CE1 Tank Periscope Characteristics.

(1) Visible 8X system:

US CustomaryMagnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8XField of view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8°EFL of objective . . . . . . . . . . . . . . . . . . . . . . . . . . 8.813 in.Exit pupil diameter . . . . . . . . . . . . . . . . . . . . . . . . 0.200 in.Clear eye distance . . . . . . . . . . . . . . . . . . . . . . . . 0.63 in.Diopter (one) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.031 in.

(2) Passive 7.1 X system:

Magnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.1XField of view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 °

EFL of objective . . . . . . . . . . . . . . . . . . . . . . . . . . 7.8 in.EFL of eyepiece . . . . . . . . . . . . . . . . . . . . . . . . . . 1.100 in.Exit pupil diameter . . . . . . . . . . . . . . . . . . . . . . . . . 0.059 in.Eye relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.850 in.Clear eye distance . . . . . . . . . . . . . . . . . . . . . . . . 0.600 in.Diopter (one) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.031 in.

Metric Conversion

22.385 cm0.508 cm1 . 6 0 c m0.079 cm

19.8 cm1 9 . 6 c m

1 . 6 0 c m0.043 cm

Metric Conversion

22.385 cm0.508 cm1 . 6 0 c m0.079 cm

19.8 cm2.794 cm0 . 1 5 c m2.159 cm1.524 cm0.079 cm

1-3


1-10. EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES. (cont)

US Customary Metric Conversion

(3) Unity power system:

Horizontal field of view . . . . . . . . . . . . . . . . . . . . . 30°32'

Vertical field of view . . . . . . . . . . . . . . . . . . . . . . 5°48’

c. Features. Each model of targets. The visible 8X system istank periscope consists of three divided into one system for visi-separate and independent col- ble light observation of targetsIimated units: head assembly, and an infrared system for nightdaylight body assembly, and in- fighting targets.frared body assembly (night vi-sion device for M32 and M32C) (2) The M32E1 andor elbow assembly (night vision M32CE1 tank periscopes havedevice for M32E1 and M32CE1). three optical systems consisting

(1) The M32 and M32Cof a unity power system forwide, close-up vision of the ter-

tank periscopes contain a unity rain; a visible 8X system for visi-power system for wide, close-up ble daylight sighting of targets;vision of the terrain and a visible and a passive 7.1X system for8X system for sighting distant night sighting of targets.

1-11. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS.

a. Head Assembly (1). Light-gatheringinstrument; serves as input source fordaylight and night sighting systems. An in-ternal mirror can be rotated from a depres-sion of 18 degrees to an elevation of 22degrees from the line of sight; rotation islimited to gun elevation capabilities.

b. Daylight Body Assembly (2). Installedin left opening of head assembly. Housesvisible 8X system. Monocular unit con-sisting of etched reticle positioned bydeflection and elevation boresight knobassemblies for gun laying, adjustablediopter eyepiece, and an incandescent lampto illuminate the reticle.

1-4


c. Infrared Body Assembly (3).Monocular type elbow telescope used fornight sighting of targets. Has an integralreticle projection system positioned bydeflection and elevation boresight knobassemblies. Power is supplied from the 24V dc tank power system. A converter and apower pack is used to adjust the voltage to16,000 volts for operation of the image in-tensifier. Short waves within the infrared

d. Elbow Assembly (4). Nighttimecounterpart of the daylight body assembly.Amplifies available visible light by means ofan image intensifier and solid power supply,making objects visible without the aid of asearchlight. Electrical power to energize theimage intensifier is provided by either the24 V dc tank power system or a 3.2 V dcM30 instrument light.

spectrum produce an image by reflection ofinfrared light off an object.

1-5


1-11. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS. (cont)

e. Data Plates. Refer to illustrations abovefor location of data plates.

1-6


1-12. DIFFERENCES BETWEEN MODELS.

The main difference between the fourmodels of M32 series tank periscope is thenight vision system.

a. M32 and M32C Tank Periscopes.Utilize an infrared body assembly. Thesystem requires a 24 V dc power source toenergize the solid power supply, providingelectrical input to the converter regulatorconverting the output to 16,000 volts to theimage intensifier and providing night sightingof targets. Emergency operation in event ofpower failure can be achieved by replacing

1-13. EQUIPMENT DATA.

a. M32 and M32C Tank Periscopes.

(1) Weight.Head assembly . . . . . . . . . . . . . . . . . . . . .

converter regulator with a 1.5 V C-sizebattery.

b. M32E1 and M32CE1 Tank Periscopes.Utilize an elbow assembly. The system re-quires a 24 V dc power source to converterregulator converting the voltage to the imageintensifier to 2.35 V dc. Light intensity canbe varied from low to high by adjustment ofthe RETICLE control knob and/or TUBE con-trol knob. An electrical connector is providedto accommodate a 3.2 V dc M30 instrumentlight, if desired.

US Customary

. . . 25 lbInfrared body assembly . . . . . . . . . . . . . . . . .Daylight body assembly . . . . . . . . . . . . . . . . .

(2) Dimensions.Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

b. M32E1 and M32CE1 Tank Periscopes.

(1} Weight.Head assembly . . . . . . . . . . . . . . . . . . . . . . . .Elbow assembly . . . . . . . . . . . . . . . . . . . . . . .Daylight body assembly . . . . . . . . . . . . . . . . .

(2) Dimensions.Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23 lb5 lb

20.5 in.13.38 in.12 in.

25 lb24 lb

5 lb

20.5 in.13.5 in.12.62 in.

Metric Conversion

11.34 kg10.43 kg

2.27 kg

52.07 cm33.99 cm30.48 cm

11.34 kg10.89 kg

2.27 kg

52.07 cm34.29 cm32.05 cm

1-7


1-14. SAFETY, CARE, AND HANDLING.

WARNINGThe following safety precau-tions are listed for the protec-tion of personnel performingmaintenance procedures con-tained in this manual. Failureto follow prescribed precau-tions may result in injury topersonnel.

● Compressed Gas. Compressed nitrogengas is used for purging and charging ofequipment. Keep face and body clearof release valves. Death or severe in-

jury may result if personnel fail toobserve safety precautions. Highpressure tanks can explode and killpeople. Personnel shall be trained inthe safe use, handling, and storage ofcompressed gases and gas cylinders.

● Toxic Vapors. Various solvents andcompounds which produce toxicvapors are used throughout thismanual. Do not use toxic vapor pro-ducing agents in a confined area.Avoid long periods of breathing toxicvapors and avoid contact with skin.

Section IV. PRINCIPLES OF OPERATION

1-15. OPERATING PRINCIPLES. c. Refer to TM 9-2350-258-10 foroperating principles for the tank periscope

a. Refer to TM 9-2350-215-10-1 for used on the M48A5 combat tank.operating principles for the tank periscopeused on the M60A1 combat tank. d. Refer to TM 9-2350-260-10-1 for

operating principles for the tank periscopeb. Refer to TM 9-2350-257-10-1 for used on the M60 combat tank.

operating principles for the tank periscopeused on the M60A1 combat tank (rise andrise passive).

1-8


CHAPTER 2DIRECT SUPPORT MAINTENANCE INSTRUCTIONS

2-1 .

a.

Section I. TROUBLESHOOTING

TROUBLESHOOTING INFORMATION.

The symptom index can be used as a manual cannot list all malfunctions that mayquick guide to troubleshooting. Common occur, nor all tests or inspections and cor-malfunctions are listed in alphabetical order rective actions. If the malfunction is notwith a page number reference to the listed, or if the malfunction still exists aftertroubleshooting table where a test or inspec- all listed corrective actions have been per-tion and corrective action are provided. formed, notify general support maintenance.

b. Table 2-1 lists the malfunction, thetest or inspection indicating the malfunction,and the corrective action needed. This

SYMPTOM INDEX

TroubleshootingProcedure(Page No.)

DAYLIGHT BODY ASSEMBLYPoor vision through daylight body assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Poor or no illumination of reticle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 2-2

ELBOW ASSEMBLYPoor vision through image intensifier elbow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6No night channel image, low brilliance of night image, or night

image flickers or moves.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6Poor or no illumination of night reticle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . 2-5

INFRARED BODY ASSEMBLYPoor vision through infrared body assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Poor or no illumination of night reticle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . 2-3

TANK PERISCOPE (ALL MODELS)Loss of boresight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . 2-2

2-1


2-1. TROUBLESHOOTING INFORMATION. (cont)

Table 2-1. TROUBLESHOOTING

MALFUNCTIONTEST OR INSPECTION

CORRECTIVE ACTION

TANK PERISCOPE (ALL MODELS)

1. LOSS OF BORESIGHT.

Step 1. Make sure elevation and deflection knob assemblies are fully engaged withtheir positive clutches.

If knob cannot be engaged, replace appropriate knob assembly.(Refer to page 2-16 for daylight body assembly; refer to page2-27 for infrared body assembly; refer to page 2-39 for elbowassembly.)

Step 2. Check that daylight body assembly, infrared body assembly or elbowassembly is properly seated.

a.

b.

c.

Check for foreign matter around locating pads. Clean asnecessary.

Check for damaged periscope latches or strikes. Replaceauthorized parts (page 2-16, 2-27, or 2-39) as necessary.

If boresight capabilities are not restored, replace daylight bodyassembly, infrared body assembly, or elbow assembly (Page2-8), as appropriate.

DAYLIGHT BODY ASSEMBLY

2. POOR OR NO ILLUMINATION OF RETICLE.

Step 1. Check for damaged or defective incandescent lamp (page 2-16).

Replace damaged or defective incandescent lamp (page 2-16).

2-2


Table 2-1. TROUBLESHOOTING (cont)


CORRECTIVE ACTION

Step 2. Perform continuity check between contact and electrical ring. (Refer topage 2-16 for identification of parts.)

a. Replace damaged or defective contact (page 2-16.)

b. If malfunction is not corrected, replace daylight bodyassembly (page 2-8).

3. POOR VISION THROUGH DAYLIGHT BODY ASSEMBLY.

Step 1. Check for proper alinement of reticle.

Adjust diopter length.

Step 2. Check for dirt or fingerprints on all exposed optical surfaces.

Clean optics in accordance with TM 9-254.

Step 3. Check for condensation; if moisture is present, check for defective sealingor a defective valve core and purging valve stem using a soapy solution.

a . Replace valve core (page 2-16) or purging valve stem (page2-16), as necessary.

b. Purge and charge in accordance with TM 750-116.

c. If sealing is defective, replace daylight body assembly (page2-8).

INFRARED BODY ASSEMBLY

4. POOR OR NO ILLUMINATION OF NIGHT RETICLE.

Step 1. Check for damaged or defective incandescent lamp (page 2-27)

Replace damaged or defective incandescent lamp (page 2-27).

Step 2. Check if electron tube reflects green grain image when rotary switch isturned on.

a. Replace damaged or defective electron tube (page 2-27).

2-3





CORRECTIVE ACTION

INFRARED BODY ASSEMBLY (cont)

b. If malfunction cannot be corrected, replace infrared bodyassembly (page 2-8).

2-4




CORRECTIVE ACTION

5. POOR VISION THROUGH INFRARED BODY ASSEMBLY.

Step 1. Check for proper alinement of reticle.


Step 2. Check for dirt or fingerprints on all

Clean optics in accordance

exposed optical surfaces.

with TM 9-254.

Step 3. Check for condensation; if moisture is present, check for defective sealingor a defective valve core and purging valve stem using a soapy solution.

a. Replace valve core (page 2-27) or purging valve stem2-27), as necessary.


c. If sealing is defective, replace infrared body assembly2-8).

ELBOW ASSEMBLY


Step 1. Check that RETICLE control knob is properly adjusted.

Step 2. Check for damaged or defective incandescent lamp.

Replace incandescent lamp (page 2-39), as necessary.

(page

(page

Step 3. With objective lens covered to simulate darkness, turn shutter assemblyswitch to 3 V ON position and operate TUBE control knob.

a. If image intensifier lights, notify next higher level ofmaintenance to replace RETICLE control knob.

b. If image intensifier does not reflect a green grain image, notifynext higher level of maintenance to replace regulatorassembly.

c. Replace elbow assembly (page 2-8), if required.

2-5





CORRECTIVE ACTION

7. POOR VISION THROUGH IMAGE INTENSIFIER ELBOW.

Step 1.

Step 2.

Step 3.

Check for proper alinement of reticle.


Check for dirt or fingerprints on all exposed optical surfaces.

Clean optics in accordance with TM 9-254.

Check for condensation; if moisture is present, check for defective sealingor a defective valve core and purging valve stem using a soapy solution.

a. Replace valve core (page 2-39) or purging valve stem (page2-39), as necessary.


c. If sealing is defective, replace elbow assembly (page 2-8}.

8. NO NIGHT CHANNEL IMAGE, LOW BRILLIANCE OF NIGHT IMAGE, OR NIGHT IMAGEFLICKERS OR MOVES.

Step 1. Check that shutter assembly switch is ON.

Step 2. Check that TUBE control knob is properly adjusted to obtain sufficient im-age brightness.

Step 3. Check that image intensifier is not defective.

Replace image intensifier if defective (page 2-39).

2-6




CORRECTIVE ACTION

Step 4. Check continuity of TUBE potentiometer and resistor R1 (refer to wiringdiagram).

Replace elbow assembly (page 2-8), if necessary.

2-7


Section Il. MAINTENANCE PROCEDURES

2-2. TANK PERISCOPE–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:

I a. Disassembly b. Inspection/cleaning/repair c. Reassembly

INITIAL SETUP

Tools and Special Tools Lens paper (item 14, app B)Instrument and fire control shop equip-

ment (SC 4931-95-CL-A07) ReferencesInstrument and fire control system repair TM 9-254

shop equipment (SC 4931-95-CL-A09) TM 9-1240-379-34PTM 750-116

Materials/PartsArtist’s brush (item 3, app B)Ethyl alcohol (item 9, app B)

DISASSEMBLY

CAUTIONThe light shield must be keptin place at all times when theinfrared body assembly orelbow assembly is removedfrom the head assembly.Direct sunlight or high intensi-ty artificial light can damage ordestroy the electron tube orimage intensifier.

NOTEInfrared body assembly is usedon M32 and M32C tankperiscopes. Elbow assembly isused on M32E1 and M32CE1tank periscopes. The elbowassembly is illustrated.

1 Support infrared body assembly or elbowassembly (1) with hand; releaseperiscope latch (2) on infrared bodyassembly or elbow assembly (1) andperiscope latch (3) on head assembly (4).

2 Carefully remove infrared body assemblyor elbow assembly (1) from headassembly (4).

2-8


There areNOTE

two configurationsof the daylight body assembly.Follow step 3 for the M32 orM32E1 tank periscope. Followstep 4 for the M32C orM32CE1 tank periscope.

3 Loosen two screws (5); support daylightbody assembly (6) with hand and removetwo screws (5) and two Iockwashers (7).Carefully lower daylight body assembly(6) from head assembly (4).

4 Support daylight body assembly (8) withhand and release two periscope latches(9); carefully remove daylight bodyassembly (8) from head assembly (4).

INSPECTION/CLEANING/REPAIR

1 Replace any damaged, broken, or missingparts. See TM 9-1240-379-34P.

2 Clean optical surfaces in accordance withTM 9-254.

2-9


2-2. TANK PERISCOPE–MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY

N O T EThere are two configurationsof the daylight body assembly.Follow step 1 for the M32 orM32E1 tank periscope. FollowStep 2 for the M32C orM32CE1 tank periscope.

1. Position daylight body assembly (1) inhead assembly (2); secure with twolockwashers (3) and two screws (4).

2. Position daylight body assembly (5) inhead assembly (2) and latch twoperiscope latches (6).

2-10


3

4

5

Carefully position infrared body assemblyor elbow assembly (7) on head assembly(2).

Secure periscope latch (8) on headassembly (2) and periscope latch (9) oninfrared body assembly or elbowassembly (7).

After maintenance has been completed,purge and charge in accordance with TM750-116.

2-3. HEAD ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:

a. Disassembly b. Inspection/repair c. Reassembly

INITIAL SETUP

Tools and Special Tools ReferencesInstrument and fire control shop equip- TM 9-1240-379-34P

ment (SC 4931-95-CL-A07) TM 750-116Instrument and fire control system repair

shop equipment (SC 4931-95-CL-A09) Equipment ConditionsPage 2-8 Daylight body assembly and

Materials/Parts infrared body assembly orDry cleaning solvent (item 8, app B) elbow assembly removedGloves (item 10, app B) from head assemblySealing compound (item 16, app B)

2-11


2-3. HEAD ASSEMBLY–MAINTENANCE lNTRUCTIONS. (cont)

DISASSEMBLY

1 Loosen pneumatic valve cap (1) andremove from purging valve stem (2).

2 Loosen hexagon nut (3) and removefrom purging valve stem (2).

3 Remove valve cap strap (4) from purg-ing valve stem (2) and then frompneumatic valve cap (1).

valve stem (2).

head assemb ly (6 ) .

4 Remove valve core (5) from purging

5 Remove purging valve stem (2) from

6 Remove two machine screws (7) andtwo lockwashers (8).

7 Remove periscope latch (9).

NOTEFollow steps 8 and 9 for theM32 or M32E1 tankperiscope. Follow steps 10 or11 for the M32C or M32CE1tank periscope.

8 Remove two socket capscrews (10) andtwo lockwashers (11).

9 Remove angle bracket (12).


11 Remove periscope latch (15).

2-12



13 Remove strike (18).

N O T EFollow steps 14 and 15 forthe M32C or M32CE1 tankperiscope. Follow steps 16 and17 for the M32 or M32E1tank per i scope .


15 Remove strike (21).


17 Remove angle bracket (24).

INSPECTION/REPAIR

1 Inspect pneumatic valve cap for damagedthreads and distortion.

2 Inspect hexagon nut for damaged threadsand distortion.

3 Inspect valve cap strap for tears and/ord i s t o r t i o n .

4 Inspect valve core for corrosion anddeterioration.

5 Replace any damaged, broken, or missingparts. See TM 9-1240-379-34P.N O T E

Follow step 18 for the M32Ctank periscope only.

18 Remove decal (25), only if necessary forr e p l a c e m e n t .

2-13


2-3. HEAD ASSEMBLY–MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY

WARNINGDry cleaning solvent (SD) isflammable and should not beused near an open flame or ina smoking area. Use only inwell-ventilated areas. This sol-vent evaporates quickly andhas a drying effect on theskin. When used withoutgloves it may cause cracks inthe skin and in some casesmild irritation or inflammation.

N O T EFollow step 1 for the M32Ctank periscope only.

1 Clean head assembly surface with drycleaning solvent. Install decal (1), ifremoved.

2 Position strike (2) on head assembly (3)and secure with two lockwashers (4) andtwo machine screws (5).

N O T EFollow step 3 for the M32 orM32E1 tank periscope. Followstep 4 for the M32C orM32CE1 tank periscope.

3 Position angle bracket (6) on headassembly (3) and secure with twolockwashers (7) and two machine screws(8).

4. Position strike (9) on head assembly (3)and secure with two lockwashers (10)and two machine screws (11).

2-14


N O T EFollow step 5 for the M32 or M32E1 tank periscope. Followstep 6 for the M32C orM32CE1 tank periscope.

5 Position angle bracket (12) on headassembly (3) and secure with twolockwashers (13) and two socketcapscrews (14).

6 Position periscope latch (15) on headassembly (3) and secure with twolockwashers (16) and two machines c r e w s ( 1 7 ) .

7 Position periscope latch (18) on headassembly (3) and secure with twolockwashers (19) and two machinescrews (20).

8 Apply sealing compound on taperedthread end of purging valve stem (21).

9 Install purging valve stem (21) intohead assembly (3).

10 Install valve core (22) in purging valvestem (21).

11 Assemble pneumatic valve cap (23) toon purging vale cap strap (24).

12 Install other end of valve cap strap (24)on purging valce stem (21).

13 Install hexagon nut (25) on purgingvalve stem (21).

14 Install pneumatic valve cap (23) onpurging valve stem (21).

15 After maintenance has been completed,purge and charge in accordance withTM 750-116.

2-15


2-4. DAYLIGHT BODY ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:

a. Disassembly b. Inspect ion/cleaning/repair c. Reassembly

INITIAL SETUP

Tools and Special Tools Grease (item 11, app B)Fire control maintenance and repair Lens paper (item 14, app B)

shop specialized equipment wrench Preformed packing (two) (8205653)set (SC 4931-95-C-L-J52) Sealing compound (item 16, app B)

Instrument and fire control shop equip- Solder (item 18, app B)ment (SC 4931-95-CL-A07)

Instrument and fire control system re- Referencespair shop equipment (SC TM 9-2544931-95-CL-A09) TM 9-1240-379-34P

TM 750-116Materials/Parts

Artist’s brush (item 3, app B) Equipment ConditionsCrocus cloth (item 6, app B) Page 2-8 Daylight body assemblyEthyl alcohol (item 9, app B) removed from tank periscope

DISASSEMBLY

WARNINGDetent plunger is under springtension. Be careful whenremoving or injury may result.

NOTEFollow steps 1 thru 4 for theM32 or M32E1 tankperiscope.

1 Remove retaining ring (1) from detentplunger (2).

2 Remove detent plunger (2) and helicalspring (3).

3 Remove two machine screws (4) and key(5) from daylight body assembly (6).

2-16


4 Loosen and remove two socket

capscrews (7), two lockwashers (8), and

block (9) from daylight body assembly

(6).

W A R N I N GDetent plunger is under springtension. Be careful whenremoving or injury may result.

NOTEFollow steps 5 thru 9 for theM32C or M32CE1 tankp e r i s c o p e .

7 Remove two machine screws (13) andbody assembly bracket (14) assembledwith machine key (15) from daylightbody assembly (6).

8 Remove machine screw (16) f rommachine key (15) and body assemblybracket (14).

9 Remove two machine screws (17), twolockwashers (18), and periscope latch(19) from daylight body assembly (6).



2-17


2-4. DAYLIGHT BODY ASSEMBLY–MAINTENANCE INSTRUCTIONS. (cont)

DISASSEMBLY (cont)




12 Remove two machine screws (23) andkey (24) from daylight body assembly( 6 ) .

N O T EThe electrical wire providesthe power source from thecontact to the reticle lamp ter-minal. Replace only asrequired.

13 Loosen and remove setscrew (25) andlift out countact (26), together with con-nect ing wire.

14 Unsolder wire from contact (26);remove contact.

15 Loosen and remove lampholder (27),gasket (28), and incandescent lamp(29). Discard gasket (28) ifunserv i ceab le .

16 Using tubular spanner wrench, removeexternally threaded ring (30).

2-18


17 Remove four machine screws (31), fourlockwashers (32), and deflectionboresight knob assembly (33) f romdaylight body assembly (6).

18 Remove preformed packing (34) anddiscard.

19 Remove four machine screws (35), fourlockwashers (36), and elevationboresight knob assembly (37) fromdaylight body assembly (6).

20 Remove preformed packing (38) anddiscard.

21 Remove four machine screws (39) andfour lockwashers (40).

22 Remove optical cell assembly (41) fromdaylight body assembly (6).

23 Remove purging screw (42).

24 Remove pneumatic valve cap (43) frompurging valve stem (44) and then fromvalve cap strap (45).

25 Remove valve core (46) from purgingvalve stem (44).

26 Remove purging valve stem (44) fromdaylight body assembly (6).

27 Remove valve cap strap (45) from purg-ing valve stem (44).

2-19


2-4. DAYLIGHT BODY ASSEMBLY – MAINTENANCE INSTRUCTIONS. (cont)


1 Inspect contact for corrosion. Clean andpolish contact with fine crocus cloth oremery paper.

2 Inspect purging valve stem andpneumatic valve cap for worn ordamaged threads.

3 Inspect valve core for corrosion.

4 Inspect valve cap strap for tears and

defo rmat ion .

5 Check numerical engraving on elevationand deflection knob assemblies slipscales for legibility.

6 Clean optical surfaces in accordance withT M 9 - 2 5 4 .

7 Replace any missing, damaged, or brokenparts. See TM 9-1240-379-34P.

REASSEMBLY

1 Assemble valve cap strap (1) to purgingvalve stem (2).

2 Apply sealing compound to taperedthread end of purging valve stem (2).

3 Install purging valve stem (2) intodaylight body assembly (3) and tighten.

4 Install valve core (4) into purging valvestem (2).

5 Assemble pneumatic valve cap (5) toloose end of valve cap strap (1) and in-stall pneumatic valve cap (5) on purgingvalve stem (2).

6 Apply sealing compound to threads ofpurging screw (6); install purging screw.

2-20


N O T EThe main difference betweenthe elevation and deflectionboresight knob assemblies isthe way that the numbersface. See illustration above.

N O T EIf adjuster blade (9) extendstoo far, the spring tension ofthe reticle will force elevationboresight knob assemblyo u t w a r d .

7 Apply a light coat of grease to newpreformed packing (7); install preformedpacking in outer grooved recess ofelevation boresight knob assembly (8).

8 Aline guide pin holes and hold elevationboresight knob assembly (8) againstdaylight body assembly (3). Turn eleva-tion boresight knob assembly so thatadjuster blade (9) just touches reticleh o u s i n g .

9 Instal l and t ighten four lockwashers(10) and four machine screws (11).

10 Install optical cell assembly (12), fourlockwashers (13), and four machinescrews (14).

2-21

AFMY TM 9-1240-379-34MARINE CORPS TM 04332A-34

2-4. DAYLIGHT BODY ASSEMBLY – MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY (cont)

11 Adjust elevation boresight knobassembly (8):

a. Remove screw (15) and spring (16).

b. Remove knob (17) with scale at-tached. Do not remove scale f romk n o b .

c. Set stop (18) against right-handside of pin (19) in clutch (20).

d. Install knob (17) so that pin is asclose as possible against lef t -hands i d e o f s t o p ( 1 8 ) .

e. Install spring (16) and screw (15);

tighten screw.

f . T u r n k n o b ( 1 7 ) c l o c k w i s e t o i t slimit. Loosed screw (15) and rotatediopter scale to read +4.0. Tightenscrew (15).

g. Turn knob (17) counterclockwise toits limit. The diopter scale shouldread -4.0. If the scale does not readdiopter scale until 0 is midploint ofthe knob rotat ion. Tighten screw(15).

2-22


N O T EThe main difference betweenthe elevation and deflectionboresight knob assemblies isthe way tha t the numbersface. See illustration above.

assembly (22) against daylight bodyassembly (3), turn deflection boresightknob assembly so that adjuster blade(23) just touches the reticle housing.

12 Apply a l ight coat of grease to newpre fo rmed pack ing (21) ; i ns ta l l p re -formed packing in outer grooved recessof deflection boresight knob assembly(22 ) .

13 Hold deflection boresight knob

N O T EIf adjuster blade (23) extendstoo far, the spring tension ofthe reticle will force deflectionboresight knob assemblyo u t w a r d .

14 Install and tighten four lockwashers(24) and four machine screws (25).

2-23


2-4. DAYLIGHT BODY ASSEMBLY-MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY (cont)

15 Adjust deflection boresight knobassembly (22):


b. Remove knob (28) with scale at-tached. Do not remove scale.


d. Install knob (28) so that pin in knobis as close as possible against thelef t -hand side of stop (29).

e. Instal l spr ing (27) and screw (26);t i gh ten sc rew (26) .

f . Turn knob (28) c lockwise to i tslimit. Loosen screw (26) and rotatediopter scale to read +4.0. Tightenscrew (26).

g. Turn knob (28) counterclockwise toits limit. The diopter scale shouldread -4.0. If the scale does not read-4.0, loosen screw (26) and turndiopter scale until 0 is midpoint ofthe knob rotation. Tighten screw( 2 6 ) .

2-24


16 Using solder, attach wire to terminal ofcontact (32).

17 Coil excess wire into housing and installcontact (32).

18 Secure contact (32) with setscrew (33)and seal setscrew (33) with sealingc o m p o u n d .

19 Install externally threaded ring (34) andtighten, using tubular wrench.

20 Install lampholder (35), gasket (36), andincandescent lamp (37) in daylight bodyassembly (3) and tighten.

21 Position key (38) on daylight bodyassembly (3) and secure with twomachine screws (39); tighten machinescrews.

22 Install helical spring (40) into key (38).

23 Install detent plunger (41) againsthelical spring (40).

24 Depress detent plunger (41) to com-press helical spring until retaining ringgroove appears in the nearest slot ofkey (38).

25 Install retaining ring (42).

2-25


2-4. DAYLIGHT BODY ASSEMBLY - MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY (cont)

N O T EFollow steps 26 thru 32 forthe M32C or M32CE1 tankperiscope.

26 Position periscope latch (43) on daylightbody assembly (3) and secure with twolockwashers (44) and two machinescrews (45); tighten machine screws.

27 Install body assembly bracket (46) andmachine screw (47) on machine key(48).

28 Position machine key (48) on daylightbody assembly (3) and secure with twomachine screws (49).

29 Install helical spring (50) in key (48).

30 Install detent plunger (51) againsthelical spring (50).

31 Depress detent plunger (51) to com-press helical spring (50) until retainingring groove appears in the nearest slotof key (48).

32 Install retaining ring (52).

NOTEFollow steps 33 thru 38 forthe M32 or M32E1 tankperiscope.

33 Position block (53) on daylight bodyassembly (3) and secure with twolockwashers (54) and two socketcapscrews (55).

2-26


3 4

35

3 6

37

38

39

Position key (56) on daylight bodyassembly (3) and secure with twomachine screws (57); tighten machinescrews.

Install helical spring (58) in key (56).

Install detent plunger (59) againsthelical spring (58).

Depress detent plunger (59) to com-press helical spring (58) until retainingring groove appears in the nearest slotof key (56).

Install retaining ring (60).

After maintenance has been completed,purge and charge in accordance withTM 750-116.

2-5. INFRARED BODY ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:

a. Disassembly b. Inspection/cleaning/repair c. Reassembly

INITIAL SETUP

Applicable Configurations Grease (item 11, app B)M32 and M32C tank periscopes Lens paper (item 14, app B)

Preformed packing (two) (8205653)Tools and Special Tools Sealing compound (item 16, app B)

Instrument and fire control shop equip- Spring tension washer (10516207) ment (SC 4931-95-CL-A07)

Instrument and fire control system Referencesrepair shop equipment (SC TM 9-2544931-95-CL-A09) TM 9-1240-379-34P

TM 750-116Materials/Parts

Artist’s brush (item 3, app B) Equipment ConditionsEthyl alcohol (item 9, app B) Page 2-8 Infrared body assembly re-Gasket (10542005) moved from tank periscope

2-27


2-5. INFRARED BODY ASSEMBLY–MAINTENANCE INSTRUCTIONS. (cont)

DISASSEMBLY

1 L o o s e n t w o s e t s c r e w s ( 1 ) a n d t u r neyepiece assembly (2) counterclockwiseto remove.

CAUTIONDamage may result if electrontube is exposed to brightsunlight or high intensity ar-tificial light.

2 Remove eyepiece assembly (2), electrontube (3), and collar (4) from infraredbody assembly (5).

N O T EThe antipilferage seal will notbe replaced.

3 Cut wire of antipilferage seal (6), if pres-ent, and remove from cap assembly (7).Discard antipilferage seal.

4 Remove cap assembly (7) with attachedgasket (8).

5 Remove gasket (8) and discard.

6 Remove converter regulator (9) orbattery.

N O T EThe solid power supply hastwo bayonet-type slots which,when assembled with thespring tension washer andpinned sleeve, are interlockedand will be removed as anassembly.

7 Rotate pinned sleeve (10) counterclock-wise as far as possible, disengaging out-put end of solid power supply (11) frominterlocking pins of connector.

2-28


8 Remove pinned sleeve (10), spring ten- 10 Remove knob (13), three machinesion washer (12), and solid power screws (14), machine screw (15), andsupply (11) from infrared body four Iockwashers (16), only if requiredassembly (5). for replacement.

9 Remove solid power supply (11) frompinned sleeve (10). Remove and discardspring tension washer (12).

11

12

13

14

Remove pneumatic valve cap (17) from 15 Remove valve cap strap (19) from purg-purging valve stem (18). ing valve stem (18).

Remove pneumatic valve cap (17) from 16 Loosen and remove two machinevalve cap strap (19). screws (21) and two Iockwashers (22).

Remove valve core (20) from purging 17 Remove periscope latch (23).valve stem (18).

Remove purging valve stem (18) frominfrared body assembly (5).

2-29


2-5. INFRARED BODY ASSEMBLY–MAINTENANCE INSTRUCTIONS. (CONT)

DISASSEMBLY (cont)

18

19

20

21

22

23

2 4

2 5

Loosen and remove four machinescrews (24) and four Iockwashers (25).

Remove deflection boresight knobassembly (26) from infrared body as-sembly (5).

Remove preformed packing (27) anddiscard.

Loosen and remove four machinescrews (28) and four Iockwashers (29)

Remove elevation boresight knob as-sembly (30) from infrared body assem-bly (5).


Remove six machine screws (32) andsix Iockwashers (33).

Remove cover assembly (34); removeassembled Iampholder plug (35) fromcover assembly.

lNSPECTION/CLEANING/REPAIR

1 Inspect eyepiece assembly for chips,cracks, or damage that may interferewith the operation of the tankperiscope. Inspect for damaged threads.If defective, forward to next higherlevel of maintenance and obtain a neweyepiece assembly.

2 Inspect electron tube for chips, cracks,or damage that may interfere withoperation of the tank periscope.

3 Inspect cap assembly for evidence ofcracks and damaged threads.

4 Inspect converter regulator, pinnedsleeve, and solid power supply forevidence of corrosion.

5 Inspect pneumatic valve cap andpurging valve stem for damaged threadsand distortion.

6 Inspect valve cap strap for tears and/ordistortion.

7 Inspect valve core for corrosion anddeterioration.

2-30


8 Check numerical engraving on elevation 10 Replace any damaged, missing, orand deflection knob assemblies slip broken parts. See TM 9-1240-379-scales for legibility. 34P.

9 Clean optical surfaces in accordancewith TM 9-254.

REASSEMBLY

1 Install assembled lampholder plug (1) incover assembly (2).

2 Install cover assembly (2) and securewith six lockwashers (3) and sixmachine screws (4).

3 Apply a light coat of grease to newpreformed packing (5).

N O T EThe main difference betweenthe elevation and deflectionboresight knob assemblies isthe way that the numbersface. See illustration above.

4 Install new preformed packing (5) into

grooved recess of elevation boresightknob assembly (6).

5 Hold elevation boresight knob assembly(6) against infrared body assembly (7)and turn knob so that adjuster blade (8)just touches reticle housing.

N O T EIf adjuster blade (8) extendstoo far, the spring tension ofthe reticle will force the eleva-tion boresight knob assemblyoutward.

6 Install four machine screws (9),assembled with four lockwashers (10),and tighten.

2-31



REASSEMBLY (cont)

7 A d j u s t e l e v a t i o n b o r e s i g h t k n o bassembly (6):




d. Install knob (13) so that pin is asclose as possible against left-handside of stop (14).

e. Install spring (12) and screw (11);tighten screw (11).

f . Tu rn know (13) c lockw ise to i t slimit. Loosen screw (11) and rotatediopter scale to read +4.0. Tightenscrew (11).

g. Turn knob (13) counterclockwise toits limit. The diopter scale shouldread -4.0. If it does not read -4.0,loosen screw (11) and turn diopterscale so that 0 is midpoint of theknob rotation. Tighten screw (11).

2 - 3 2


8 Apply a l ight coat of grease to newpreformed packing (17).

9 Install new preformed packing (17) in-to grooved recess of deflectionboresight knob assembly (18).

10 Holding deflection boresight knobassembly (18) against infrared bodyassembly (7), turn knob so that ad-juster blade (19) just touches reticleh o u s i n g .

N O T EIf adjuster blade (19) extendstoo far, the spring tension ofthe reticle will force the deflec-tion boresight knob assemblyoutward.


2-33


2-5. INFRARED BODY ASSEMBLY - MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY (cont)




c. Set stop (25) against right-hand ofpin (26) in clutch (27).



f. Turn knob (24) clockwise to itslimit. Loosen screw (22) and rotatediopter scale to read +4.0. Tightenscrew (22).

g. Turn knob (24) counterclockwise toits limit. The diopter scale shouldread -4.0. If it does not read -4.0,loosen screw (22) and turn diopterscale so that 0 is midpoint of theknob rotation. Tighten screw (22).

2 - 3 4


13 Aline holes of periscope latch (28) withholes in infrared body assembly (7).

14 Install two machine screws (29),assembled with two lockwashers (30),and tighten.

15 Assemble one end of valve cap strap(31) to tapered thread end of purgingvalve stem (32).

16 Appl.y sealing compound to taperedthread end of purging valve stem (32).

17 Install purging valve stem (32) in in-frared body assembly (7) and tighten.


19 Assemble pneumatic valve cap (34) toother end valve cap strap (31) and theninstall on purging valve stem (32).

2-35


2-5. INFRARED BODY ASSEMBLY - MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY (cont)

20 Assemble new spring tension washer(35) to input end of solid power supply(36 ) .

21 Aline pins of pinned sleeve (37) tobayonet-type slots of solid power sup-ply (36).

22 Compress spring tension washer (35)and rotate pinned sleeve (37) clockwiseto secure.

23 Install assembled components in in-frared body assembly (7), aliningbayonet-type slots with interlockingpins of connector; rotate clockwise tosecure.

24 Install converter regulator (38) in pinnedsleeve (37).

25 Assemble new gasket (39) to capassembly (40).

26 Install cap assembly (40) in infraredbody assembly (7) and tighten.

27 If removed, install knob (41), four newlockwashers (42), new machine screw(43), and three new machine screws(44) .

CAUTIONDamage may result if electrontube is exposed to brightsunlight or high intensity ar-tificial light.

28 Install electron tube (45) and collar (46)in infrared body assembly (7).

29 Install eyepiece assembly (47); tightenclockwise snugly by hand.

30 Tighten two setscrews (48).


2-36


2-6. OPTICAL CELL ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:


INITIAL SETUP

Applicable ConfigurationsM32 and M32C tank periscope

Tools and Special ToolsHelicoil insert and tool kit (4131-04-1)Instrument and fire control shop equip-

ment (SC 4931-95-CL-A07)Instrument and fire control system repair

shop equipment (SC 4931-95-CL-A09)

Materials/PartsArtist’s brush (item 3, app B)

Ethyl alcohol (item 9, app B)Lens paper (item 14, app B)

ReferencesTM 9-254TM 9-1240-379-34PTM 750-116

Equipment ConditionsPage 2-8 Infrared body assembly re-

moved from tank periscope

DISASSEMBLY


1 Remove retain ing r ing (1) f rom detentplunger (2) while pressing a screwdriverblade against detent plunger to releasespring tension. Remove detent plunger(2) and helical spring (3) from opticalcell assembly (4).

2 Remove two machine screws (5) andremove machine key (6) and bodyassembly bracket (7).

3 Remove machine screw (8) to separatebody assembly bracket (7) frommachine key (6).

4 Remove two screw thread inserts (9)only if necessary for replacement. Referto TM 9-254.

2-37


2-6. OPTICAL CELL ASSEMBLY-MAINTENANCE INSTRUCTIONS. (cont)


1 Check mach ine sc rews fo r worn o rdamaged threads. Clean dirt and grime from all threads.

2 Inspec t he l i ca l sp r ing fo r b reaks .

3 Clean opt ical surfaces in accordancew i t h T M 9 - 2 5 4 .

4 Replace any damaged, broken, or miss-ing parts. See TM 9-1240-379-34P.

REASSEMBLY

1 If removed, install screw thread inserts(1). Refer to TM 9-254.

2 Assemble machine key (2) to bodyassembly bracket (3) and secure withmachine screw (4).

3 Position assembled machine key andbody assembly bracket on optical cellassembly (5) and secure with twomachine screws (6).

4 Install helical spring (7) and detentplunger (8) in machine key (2); securewith retaining ring (9).

5 After maintenance is completed, purgeand charge in accordance with TM7 5 0 - 1 1 6 .

2-38


DISASSEMBLY

2-7. ELBOW ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:


INITIAL SETUPEthyl alcohol (item 9, app B)Lens paper (item 14, app B)Applicable ConfigurationsPreformed packing (MS9021-038)M32E1 and M32CE1 tank periscopePreformed packing (two) (MS9021-114)Sealing compound (item 16, app B)Tools and Special Tools

Instrument and fire control shop equip-Referencesment (SC 4931-95-CL-A07)

TM 9-254Instrument and fire control system repairTM 9-1240-379-34Pshop equipment (SC 4931-95-CL-A09)TM 750-116Special threaded tool (app C)

Equipment ConditionsMaterials/parts

Page 2-8 Elbow assembly removed fromArtist’s brush (item 3, app B)tank periscope

1 Remove optical eyeshied (1).

C A U T I O NDanage may result if image in-tensifier is exposed to brightsunlight or high intensity ar-tificial light.

2 Lossen two setscrews (2) located onlocking ring of eyepiece assembly (3).

3 Remove eyepiece assembly (3) byunscrewing locking ring.

4 Loosen three setscrews (4) securingthreaded adapter (5) to elbow assembly( 6 ) .

5 Remove threaded adapter (5) fromelbow assembly (6).

6 Remove preformed packing (7) fromthreaded adapter (5). Discard preformedpacking (7).

7 Remove image intensifier (8). If imageintensifier does not readily slide out, itmay be necessary to use the specialthreaded tool (9).

8 Using special threaded tool (9), engagetwo or three threads on image inten-sifier (8) and pull straight back.Disengage special threaded tool fromimage intensifier.

2-39


2-7. ELBOW ASSEMBLY–MAINTENANCE INSTRUCTIONS. (cont)

DISASSEMBLY (cont)

9

10

11

12

13

Remove pneumatic valve cap (10),from purging valve stem (11) and thenfrom valve cap strap (12).

Remove valve core (13) from purgingvalve stem (11).

Remove purging valve stem (11) fromelbow assembly (6).

Remove valve cap strap (12) frompurging valve stem (11).

Remove two machine screws (14),two Iockwashers (15), and periscopelatch (16) from elbow assembly (6).

14

15

16

17

18

19

Remove four machine screws (17),four Iockwashers (18), and deflec-tion boresight knob assembly (19)from elbow assembly (6).


Remove four machine screws (21),four Iockwashers (22), and elevationboresight knob assembly (23) from el-bow assembly (6).


Remove six machine screws (25) andsix Iockwashers (26).

Remove cover assembly (27); removeassembled Iampholder plug (28) fromcover assembly.

2-40


2 0 Remove four machine screws (29) andspring pin (30), only if necessary forreplacement.


1

2

3

4

5

Inspect optical components for chips, 6cracks, or damage that may interferewith operation of the tank periscope.

7Check threaded components fordamaged threads.

8Check general condition of imageintensifier.

9Check that valve core is free ofcorrosion.

Inspect valve cap strap for tears.

Clean all traces of sealing compoundfrom purging valve stem hole.

Clean optical surfaces in accordancewith TM 9-254.

Replace any damaged, broken, or miss-ing parts. See TM 9-1240-379-34P.

The eyepiece assembly is a repairableassembly. Refer to page 2-47.

2-41


2-7. ELBOW ASSEMBLY-MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY

1 Install new spring pin (1) and four newmachine screws (2), if removed.

2 Install assembled lampholder plug (3) incover assembly (4).

3 Install cover assembly (4) and securewith six lockwashers (5) and sixmachine screws (6).


NOTEThe main difference betweenthe elevation and deflectionboresight knob assemblies isthe way that the numbersface. See illustration above.

5 Install new preformed packing (7) intogrooved recess of elevation boresightknob assembly (8).

6 Holding elevation boresight knobassembly (8) against elbow assembly(9), turn knob so that adjuster blade(10) just touches reticle housing.

NOTEIf adjuster blade (10) extendstoo far, the spring tension ofthe reticle will force the eleva-tion boresight knob assemblyoutward.


2-42


8 Adjust elevation boresight knobassembly (8):







g. Turn knob (15) counterclockwise toits limit. The diopter scale shouldread -4.0. If it does not read -4.0,

loosen screw (13) and turn diopterscale so that 0 is midpoint of theknob rotation. Tighten screw (13).


10 Install new preformed packing (19) intogrooved recess of deflection boresightknob assembly (20).

11 Holding deflection boresight knobassembly (20) against elbow assembly(9), turn knob so that adjuster blade(21) just touches reticle housing.

NOTEIf adjuster blade (21) extendstoo far, the spring tension ofthe reticle will force the deflec-tion knob assembly outward.


2-43


2-7. ELBOW ASSEMBLY-MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY (cont)



b. Remove knob (26) with scale at-tached. Dot not remove scale.





g. Turn knob (26) counterclockwise toits limit. The diopter scale should

loosen screw (24) and turn diopterscale so that 0 is midpoint of theknob rotation. Tighten screw (24).read -4.0. If it does not read -4.0,

14 Install periscope latch (30), twolockwashers (31), and two machinescrews (32).

15 Assemble valve cap strap (33) totapered thread end of purging valvestem (34).

16 Apply sealing compound to taperedthread end of purging valve stem (34).

17 Install purging valve stem (34) in valveassembly (9) and tighten.


19 Assembly pneumatic valve cap (36) toloose end of valve cap strap (33) andinstall on purging valve stem (34).

2-44


20

21

2 2

2 3

2 4

2 5

CAUTIONDamage may result if image in-tensifier is exposed to brightsunlight or high intensity ar-tificial light.

Install image intensifier (37) in elbowassembly (9).

Install new preformed packing (38) intothreaded adapter (39).

Install threaded adapter (39) on elbowassembly (9) and tighten. Secure bytightening three setscrews (40).

Install eyepiece assembly (41) onthreaded adapter (39). Tighten eyepieceassembly (41) and secure with twosetscrews (42).

Install optical eyeshield (43) ontoeyepiece assembly (41).

After maintenance has been completed,purge and charge tank periscope in ac-cordance with TM 750-116.

2-8. PRISM CELL–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:


INITIAL SETUP Artist’s brush (item 3, app B)Ethyl alcohol (item 9, app B)

Applicable Configurations Lens paper (item 14, app B)M32E1 and M32CE1 tank periscopes

ReferencesTools and Special Tools TM 9-254

Helicoil insert and tool kit (4131-04-1) TM 9-1240-379-34PInstrument and fire control shop equip- TM 750-116

ment (SC 4931-95-CL-A07)Instrument and fire control system repair Equipment Conditions

shop equipment (SC 4931-95-CL-A09) Page 2-8 Elbow assembly removed fromtank periscope

Materials/Parts

2-45


2-8. PRISM CELL–MAINTENANCE INSTRUCTIONS. (cont)

DISASSEMBLY

1

2

3

4


Remove retaining ring (1) from detentplunger (2) while pressing a screwdriverblade against detent plunger to releasespring tension. Remove detent plungerand helical compression spring (3).

Remove two machine screws (4) andmachine key (5), assembled with catchstrike (6), from elbow assembly (7).

Remove machine screw (8) andseparate catch strike (6) from machinekey (5).

Remove two screw thread inserts (9),only if necessary for replacement. Referto TM 9-254.

INSPECTION/CLEANING/REPAIR I

1

2

3

Inspect all parts for wear or 4 Clean optical surfaces in accordancedeterioration. with TM 9-254.

Check machine screws for worn or 5 Replace any damaged, broken, or miss-damaged threads. Clean dirt and grime ing parts. See TM 9-1240-379-34P.from all threads.

Inspect helical compression spring forbreaks.

2-46


REASSEMBLY

1

2

3

4

5

6

Install two new screw thread inserts(1), if old ones were removed. Refer toTM 9-254.

Assemble machine key (2) to catchstrike (3) and secure with machinescrew (4).

Position assembled machine key andcatch strike on elbow assembly (5) andsecure with two machine screws (6).

Install helical compression spring (7)and detent plunger (8) in machine key(2).

Install retaining ring (9).

After maintenance has been completed,purge and charge tank periscope in ac-cordance with TM 750-116.

2-9. EYEPIECE ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:


INITIAL SETUP

Applicable Configurations ReferencesM32E1 and M32CE1 tank periscopes TM 9-254

TM 9-1240-379-34PTools and Special Tools TM 750-116

Instrument and fire control shop equip-ment (SC 4931-95-CL-A07) Equipment Conditions

Instrument and fire control system repair Page 2-39 Eyepiece assembly removedshop equipment (SC 4931-95-CL-A09) from elbow assembly

2-47


2-9. EYEPIECE ASSEMBLY–MAINTENANCE INSTRUCTIONS. (cont)

DISASSEMBLY INSPECTION/CLEANING/REPAIR

1 Remove two setscrews (1) and index(2) from eyepiece assembly (3).

2 Remove three setscrews (4) and diopterscale (5) from eyepiece assembly (3).

REASSEMBLY

1

2

Clean optical surface in accordancewith TM 9-254.

Replace any damaged, broken, or miss-ing parts in accordance with TM9-1240-379-34P.

1

2

3

Install diopter scale (1) on eyepieceassembly (2) and secure with threesetscrews (3).

Install index (4) and two setscrews (5)into eyepiece assembly (2).


2-48


Section Ill. PREPARATION FOR STORAGE OR SHIPMENT

2-10. PREPARATION FOR PACKAGING

a. Clean all surfaces in accordance withMlL-P-116.

b. Cover eyepiece assembly with a pro-tective cap (item 5, app B). Cover all otheroptics with four pieces of lens paper (item14, app B) and secure with tape (item 20,app B).

c. Position a mailing tube (item 22, appB) over the eyepiece assembly containingthe electron tube; secure with tape (item 20,app B) as follows:

(1) Wrap one piece around knurled ringand cap (adjacent to mailing tube) so thathalf the width of the tape is on the knurledring and the other half is on the mailingtube.

(2) Cross two pieces at 90 degreesover the center of the open end of the mail-ing tube and extend down the mailing tubeand over the full width of the knurled ring.

d. Secure a shipping tag (item 19, app B)to the mailing tube with the following infor-mation: CAUTION–PAPER MAILING TUBESHALL NOT BE REMOVED UNTIL AFTER IN-STALLING TANK PERISCOPE INTO THEMOUNT.

e. Position a piece of flat steel banding(3/8 x 1-1/2 x 0.23) conforming to Type 1,Class B of QQ-S-781 between the wedge(coupling arm assembly) and the stop to pre-vent movement. Wrap a piece of tape (item20, app B) around wedge and steel bandingto secure.

f. Secure a shipping tag (item 19, app B)to the wedge with the following information:

CAUTION–FLAT STEEL SPRING IMMOBlLIZ-ING WEDGE (COUPLING ARM ASSEMBLY)SHALL NOT BE REMOVED UNTIL PRIOR TOINSTALLING THE TANK PERISCOPE INTOTHE MOUNT.

2-11. PACKAGING SEQUENCE

a. Wrap tank periscope with laminatedand creped wrapping paper (item 15, app B)and secure with tape (item 20, app B).

b. Overwrap with wrapping and cushion-ing paperboard (item 13, app B) and securewith tape (item 20, app B).

c. Place item into a plastic bag (item 2,app B). Exhaust entrapped air prior to heatsealing.

d. Using cushioning material (item 7, appB), line a shipping box (item 4, app B) asfollows:

(1) two pieces each 30 x 21 -3/8 x 4in. (76.2 x 54.29 x 10.16 cm) forsides

(2) two pieces each 14 x 21 -3/8 x 4in. (35.56 x 54.29 x 10.16 cm) forends

(3) two pieces each 22 x 14 x 4 in.(55.88 x 35.56 x 10.16 cm) fortop and bottom

NOTEThe bagged tank periscope willfit snugly in the cushionedshipping box when the ship-ping box is closed.

e. Close shipping box and secure withadhesive tape (item 21, app B).

2-49


Section IV. PRE-EMBARKATION INSPECTION OF MATERIELIN UNITS ALERTED FOR OVERSEAS MOVEMENT

2-12. GENERAL.

Pre-embarkation is performed on materiel inthe hands of troops alerted for overseas du-ty to ensure that such materiel will notbecome unserviceable or worn out in arelatively short time. It prescribes a higherpercentage of remaining usable life in serv-iceable materiel to meet a specific needbeyond minimum serviceability.

2-13. GENERAL INSPECTION.

a. Examine tank periscope to ensure thatall component parts are present. Check par-ticularly for missing pins, screws, and otherattaching hardware.

b. Check exterior for damaged, cracked,or dented surfaces, bent or broken parts,moisture or corrosion, and other evidence ofmisuse that might indicate a need for repair.

c. Inspect all sealed areas to assure thatsealing is still intact.

d. Inspect nameplates to ensure that allnumbering and lettering is clearly definedand easily read.

e. Inspect diopter scales to ensure thatthey are clearly defined and easily read.

f. Inspect for bare spots or damagedfinish which would expose metal surfacesand lead to corrosion.

g. Test alinement and looseness of bodyassemblies by checking periscope latches,strikes, plungers, and brackets.

h. Check that deflection and elevationboresight knob assemblies are firmly seatedagainst clutches.

i. After recording setting of eachboresight knob assembly, disengage knobfrom clutch and rotate it through its com-plete range. Operation must be smooththroughout. When finished, reset knob toposition recorded before disengaging.

2-14. INSPECTION OF OPTICALELEMENTS.

a. Lenses, reticles, and windows must befree from scratches, pits, dirt, smears, digs,fractures, and chips that may interfere withor affect the optical performance of the tankperiscope.

b. Any breakdown or excessivediscoloration of cement between elements ofcompound lenses that affects optical per-formance in the field is cause for rejection ofthe instrument.

c. When looking through the tankperiscope, there must be no evidence ofmoisture or fungus growth.

d. When sighting through the tankperiscope, the image and reticle must beclearly defined. There must be no indicationof parallax or image tilt as defined in TM9-258.

NOTELevel tank periscope and makethe following checks lookingthrough elbow assembly/in-frared body assembly anddaylight body assembly.

(1) Parallax. Look at a target withsharp horizontal and vertical lines at adistance of 1200 meters (3937 feet);parallax must not exceed the thickness ofone reticle line.

(2) Parallelism. Look at a target withsharp horizontal and vertical lines at adistance of 1200 meters (3937 feet). Thelines on the target should be parallel withthe lines on the reticle image within 2 milsof arc.

NOTEThis is with Periscope installedin tank and inspected at thetime of synchronization andalinement.

2 - 5 0

2-15. INSPECTION OF ELECTRICALCOMPONENTS.

a. Visually inspect electrical and powermateriel for evidence of circuit faults orpossible sources of trouble as indicated bythe conditions listed below:

(1) Burned or carbonized insulation.

(2) High-voltage arcs or short circuits.

(3) Improperly soldered connections.


(4) Electrical contacts not makingconnection.

(5) Burned out incandescent lamp.

b. Check image intensifier system forevidence of the following malfunctions:

(1) Visible flicker.

(2) Image movement.

(3) Audible sparking.

2-51/(2-52 blank)


CHAPTER 3GENERAL SUPPORT MAINTENANCE INSTRUCTIONS

Section I. TROUBLESHOOTING

3-1. TROUBLESHOOTING INFORMATION.

a. The symptom index can be used as a manual cannot list all malfunctions that mayquick guide to troubleshooting. Common occur, nor all tests or inspections and cor-malfunctions are listed in alphabetical order rective actions. If the malfunction is notwith a page number reference to the listed, or if the malfunction still exists aftertroubleshooting table where a test or inspec- all listed corrective actions have been per-tion and corrective action are provided. formed, notify your supervisor.

b. Table 3-1 lists the malfunction, thetest or inspection indicating the malfunction,and the corrective action needed. This

SYMPTOM INDEX

ELBOW ASSEMBLY

TroubleshootingProcedure(Page No.)

No night channel image, low brilliance of night image, or nightimage flickers or moves.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Poor or no illumination of night reticle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Table 3-1. TROUBLESHOOTING


CORRECTIVE ACTION

ELBOW ASSEMBLY


With objective lens covered to simulate darkness, turn shutter assemblyswitch ON (reset if needed) and operate TUBE control knob.

a. If image intensifier lights, replace RETICLE control knob (page3-19).

b. If image intensifier does not light, replace regulator assembly(page 3-15).

c. If malfunction still is not corrected, replace elbow assembly(page 2-8).

3-1





CORRECTIVE ACTION

ELBOW ASSEMBLY (cont)

2. NO NIGHT CHANNEL IMAGE, LOW BRILLIANCE OF NIGHT IMAGE, OR NIGHT IMAGEFLICKERS OR MOVES.

Step 1. Check that regulator assembly is not defective.

Replace defective regulator assembly (page 3-15).

Step 2. Check continuity of TUBE control knob and TUBE variable resistor (referto wiring diagram).

a. If continuity check fails, replace TUBE control knob (page3-19), TUBE variable resistor (page 3-19), or both, asrequired.

b. If malfunction is not corrected, replace elbor assembly (page2-8 ) .

3 - 2


Section Il. MAINTENANCE PROCEDURES

3-2. HEAD ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:


INITIAL SETUP



shop equipment (SC 4931-95-CL-A09) Equipment ConditionsPage 2-8 Daylight body assembly and

Materials/Parts elbow assembly or infraredDry cleaning solvent (item 8, app B) body assembly removed fromGloves (item 10, app B) head assemblySealing compound (item 16, app B)

DISASSEMBLY

NOTEOptical instrument window issealed in place and is removedonly if damaged.

1 Remove five machine screws (1) andstrip (2).

2 Remove five machine screws (3) andstrip (4).

3 To

WARNINGBe careful when removing op-tical instrument window toavoid injury.

remove optical instrument window,heat surrounding area to soften sealingcompound and pry optical instrumentwindow (5) away from head assembly(6).

3-3


3-2. HEAD ASSEMBLY–MAINTENANCE INSTRUCTIONS. (cont)


1

2

3

Inspect all parts for deterioration. 4 Remove old sealing compound fromrecess in housing and from strips used to

Check machine screws for worn or retain optical instrument window usingdamaged threads. dry cleaning solvent.

Make sure replacement optical instru- 5 If original optical instrument window hasment window is free of chips, cracks, shattered, make sure that interior of headscratches, and discoloration. assembly is free of glass chips and

particles.WARNING

Dry cleaning solvent is flam- 6 Replace any damaged, broken, or missingmable and should not be used parts. See TM 9-1240-379-34P.near open flame, It has a dry-ing effect on the skin. Usegloves, as they may preventcracks in the skin and, in thecase of some individuals, mildirritation or inflammation. Usedry cleaning solvent in wellventilated areas.

REASSEMBLY

1

2

3

Position new optical instrument window(1) in housing of head assembly (2) andapply sealing compound in beveledrecess around edge of optical instrumentwindow.

Secure optical instrument window (1)with strip (3) at bottom using fivemachine screws (4) and strip (5) at topusing five machine screws (6).

After optical instrument window hasbeen installed in head assembly, purgeand charge in accordance with TM750-116.

3-4


3-3. DAYLIGHT BODY ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:


INITIAL SETUP



shop equipment (SC 4931-95-CL-A09) Equipment ConditionsPage 2-8 Daylight body assembly

Materials/Parts removed from tank periscopeSealing compound (item 16, app B)Solder (item 18, app B)

DISASSEMBLY

1

2

3

4

5

6

NOTEThe electrical wire providesthe power source from thecontact to the reticle lamp ter-minal. Replace only asrequired.

Loosen setscrew (1) and lift out contact(2) to expose connecting electrical wire(3).

Unsolder electrical wire from contact (2)and remove contact.

Remove Iampholder (4), gasket (5), andincandescent lamp (6).

Using tubular spanner wrench, removeexternally threaded ring (7).

Pull out connector (8) to expose connect-ing electrical wire (9) and unsolder elec-trical wire from connector. Remove elec-trical ring (10) from connector (8).

Pull electrical wire (9) from daylight bodyassembly (11).

7 Remove sealing compound from wirepassage hole (12) on daylight bodyassembly (11).

3-5


3-3. DAYLIGHT BODY ASSEMBLY–MAINTENANCE INSTRUCTIONS (cont)

INSPECTION/REPAIR

Replace any damaged, missing, or brokenparts. See TM 9-1240-379-34P.

REASSEMBLY

1 Fabricate replacement electrical wire (fig.C-1, app C).

2 Install electrical wire (1) through contactopening. Feed electrical wire (1) throughdaylight body assembly housing by gent-ly pushing a probe through wire passagehole (2).

3 Pull loose end of electrical wire (1) fromopening for incandescent lamp receptaclefar enough to permit making solderconnection.

NOTEWhen installing connector,make sure notch on connectoris correctly positioned ingroove to allow propergrounding.

4 Using solder, install electrical ring (3) onconnector (4).

5 Using solder, attach electrical wire to op-posite contact prong and install connec-tor (4) in daylight body assembly (5).

6 Using tubular spanner wrench, install ex-ternally threaded ring (6).

7 Install incandescent lamp (7), gasket (8),and Iampholder (9) in daylight bodyassembly (5).

8 Using solder, attach end of electrical wire(1) to contact (10).

9 Coil excess electrical wire to allow con-tact to be installed in daylight bodyassembly (5); secure contact withsetscrew (11) and apply sealing com-pound to setscrew hole and wire passage hole (2).

10 After maintenance has been completed,purge and charge in accordance with TM750-116.

3-6

3-4. OPTICAL CELL ASSEMBLY–MAINTENANCE INSTRUCTIONS.

A R M Y T M 9 - 1 2 4 0 - 3 7 9 - 3 4MARINE CORPS TM 04332A-34

THIS TASK COVERS:


INITIAL SETUP

Tools and Special ToolsInstrument and fire control shop equip-

ment {SC 4931-95-CL-A07)Instrument and fire control system repair

shop equipment (SC 4931-95-CL-A09)

Materials/PartsGrease (item 11, app B)Preformed packing (8289239)Sealing compound (item 16, app B)

ReferencesTM 9-254TM 9-1240-379-34PTM 750-116

Equipment ConditionsPage 2-16 Optical cell assembly

removed from daylight bodyassembly

DISASSEMBLY

1 Remove two setscrews (1) and dialpointer (2) from optical element cell (3).

2 Remove three setscrews (4) and diopterscale (5) from optical element cell (3).

3 Remove setscrew (6) and round plain nut(7).

4 Unscrew and remove optical retainingring (8) from adapter (9).

5 Remove stop (10) from adapter (9).

6 Remove optical element cell (3) fromadapter (9).

7 Remove preformed packing (11) fromring groove inside adapter (9) anddiscard.

3-7


3-4. OPTICAL CELL ASSEMBLY–MAINTENANCE INSTRUCTIONS. (cont)


1 Clean optical surfaces in accordancewith TM 9-254.

2 Replace any damaged, broken, or miss-ing parts. See TM 9-1240-379-34P.

I

REASSEMBLY

1 Apply a light coat of grease to newpreformed packing (1) and install in ringgroove inside adapter (2).

2 Install optical element cell (3) on adapter(2), alining slot in optical element cellwith stop hole in adapter.

3 Install stop (4) in adapter (2).

4 Install optical retaining ring (5) onadapter (2) and turn optical retaining ringclockwise until it seats against adapter.Do not tighten.

5 Install round plain nut (6) on optical re-taining ring (5) and hand tighten.

CAUTIONMake sure that setscrewsecuring round plain nut isbelow outside surface of roundplain nut to prevent damage todiopter scale.

6 Apply sealing compound to threads ofsetscrew (7) and install in round plain nut(6). Tighten setscrew.

7 Install diopter scale (8) on optical ele-ment cell (3).

8 Adjust diopter scale (8) according to in-structions in paragraph 3-10c(2).

9 Apply sealing compound to threesetscrews (9) and install in diopter scale(8); tighten setscrews.

10 Install dial pointer (10).

11 Apply sealing compound to twosetscrews (11) and install in dial pointer(10); tighten setscrews.


3-8


3-5. INFRARED BODY ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:


INITIAL SETUP

Applicable Configurations Spring tension washer (10516207)M32 and M32C tank periscopes

ReferencesTools and Special Tools TM 9-1240-379-34P

Instrument and fire control shop equip- TM 750-116ment (SC 4931-95-CL-A07)

Instrument and fire control system repair Equipment Conditionsshop equipment (SC 4931-95-CL-A09) Page 2-8 Infrared body assembly

removed from tank periscopeMaterials/Parts

Gasket (10542005)Sealing compound (item 16, app B)Solder (item 18, app B)

DISASSEMBLY

NOTEAntipilferage seal will not bereplaced.

1 Cut wire of antipilferage seal (1), if pre-sent, and remove from cap assembly {2).Discard antipilferage seal.

2 Remove cap assembly (2) with attachedgasket (3).

3 Remove gasket (3) and discard.

4 Remove converter regulator (4) orbattery.

3-9


3-5. INFRARED BODY ASSEMBLY – MAINTENANCE INSTRUCTIONS. (cont)

DISASSEMBLY (cont)

NOTEThe solid power supply hastwo bayonet-type slots which,when assembled with thespring tension washer andpinned sleeve, are interlockedand will be removed as anassembly.

5 Rotate pinned sleeve (5) counterclock-wise as far as possible, disengaging out-put end of solid power supply (6) frominterlocking pins of connector.

NOTEParts in step 6 are to beremoved as an assembly.

6 Remove pinned sleeve (5), spring tensionwasher (7), and solid power supply (6)from infrared body assembly (8).

7 Remove solid power supply (6) frompinned sleeve (5). Remove spring tensionwasher (7) and discard.

3-10


8 Remove three machine screws (9),machine screw (10), four Iockwashers(11), and knob (12) from infrared bodyassembly (8).

9 Remove hex nut (13) and plate (14).

10 Remove rotary switch (15).

11 Remove insulation from terminal con-nections.

12 Unsolder electrical leads from terminalsof rotary switch (15), identifying eachone as removed (refer to wiring diagramon page 3-13).

13 Remove machine screw (16),Iockwasher (17), terminal lug (18), andspring tension clip (19).

14 Unsolder terminal lug (18) from con-necting wire.

3-11



DISASSEMBLY (cont)

NOTE NOTERemove setscrew (20) and Remove two setscrews (22)contact (21) only if contact and two setscrews (23) only if(21) needs replacement. necessary for replacement.

15 Remove setscrew (20). 18 Remove two setscrews (22) and twosetscrews (23).

16 Remove contact (21) from infrared bodyassembly (8) with wire leads attached.

17 Unsolder wire leads and remove contact(21).

lNSPECTION/REPAIR

Replace any damaged, broken, or missingparts. See TM 9-1240-379-34P.

3-12


REASSEMBLY

Wiring Diagram for Infrared Body Assembly

NOTERefer to wiring diagram asneeded during reassembly.

1 If removed, install two setscrews (1) andtwo sectsrews (2) in infrared bodyassembly (3).

2 A t tach w i re leads to con tac t (4 ) us ingsolder; install contact (4) in infrared bodyassembly (3).

3 Apply sealing compound to threads ofsetscrew (5); install setscrew andtighten.

3-13



REASSEMBLY (cont)

4

5

Fabricate replacement electrical wire wire to terminal lug (10), install, and(fig. C-5, app C). tighten. Refer to wiring diagram on

page 3-13.Fabricate insulation sleeving (fig. C-2,app C). 8 Assemble plate (11) on rotary switch

(6).NOTE

Turn infrared body assembly (3) 9 Install hex nut (12) on rotary switch (6)upside down for steps 6 thru 18. and tighten.

6 Solder wire lead to terminal of rotary 10 Position rotary switch (6) and plate (11)switch (6). Position insulation sleeving on infrared body assembly (3) and installover soldered connections and heat to four Iockwashers (13), three machineshrink. screws (14), and machine screw (15).

7 Assemble machine screw (7), lock- 11 Install knob (16) on rotary switch (6)washer (8), spring tension clip (9), and and tighten.terminal lug (10); solder connecting

3-14


12

13

14

15

16

17

18

Assemble new spring tension washer(17) to input end of solid power supply(18).

Aline pins of pinned sleeve (19) tobayonet-type slots of solid power sup-ply (18).

Compress spring tension washer (17)and rotate pinned sleeve (19) clockwiseto secure.

NOTEMake sure that spring tensionclip (9) contacts solid powersupply (18).

Install assembled components in in-frared body assembly (3), aliningbayonet-type slots with interlockingpins of connector; rotate clockwise tosecure.

Install converter regulator (20) in pinnedsleeve (19).

Assemble new gasket (21) to capassembly (22).

19 After maintenance has been completed,Install cap assembly (22) in infrared purge and charge in accordance withbody assembly (3) and tighten. TM 750-116.

3-6. ELBOW ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:


INITIAL SETUP

Applicable Configurations Solder (item 18, app B)M32E1 and M32CE1 tank periscope White silicone adhesive (item 1, app B)



shop equipment (SC 4931-95-CL-A09) Equipment ConditionsPage 2-8 Elbow assembly removed

Materials/Parts from tank periscopeFlat gasket (11733499)Sealing compound (item 16, app B)

3-15



DISASSEMBLY

1 Remove four machine screws (1).

2 Pull out regulator assembly (2) fromelbow assembly (3) and unplug electricalconnector (4).

3 Remove flat gasket (5) and discard.

4 Remove spring pin (6) if loose or bent.

8 Remove setscrew (11) and pull contact(12) from elbow assembly (3) with wireleads attached.

9 Label and unsolder wire leads; removecontact (12).

5

6

7

Remove four machine screws (7) andfour Iockwashers (8); pull out switchassembly (9) as far as possible withoutstraining wires.

Label and unsolder six wires; removeswitch assembly (9) from elbowassembly (3).

Remove gasket (10).

INSPECTION/REPAIR

1

2

Replace any missing, damaged, or brokenparts. See TM 9-1240-379-34P.

The switch assembly is a repairableassembly. Refer to page 3-19.

3-16


REASSEMBLY

Wiring Diagram for Elbow Assembly

N O T ERefer to wiring diagram asneeded during reassembly.

3-17



REASSEMBLY (cont)

1 Attach wire leads to contact (1) usingsolder; install contact in elbow assembly(2).

2 Apply seal ing compound to threads ofsetscrew (3); install setscrew andtighten.

3 Install gasket (4).

4 Attach six wires to switch assembly (5)using solder.

5 Install switch assembly (5) on elbowassembly (2) and secure with fourlockwashers (6) and four machine screws(7).

6 Fill two small holes (8) in switch assem-bly cover plate with white siliconeadhesive.

3-18


7

8

9

10

11

Install spring pin (9), if removed.

Install new gasket (10).

Connect electrical connector (11) toregulator assembly (12).

CAUTIONMake sure that four machinescrews (13) are the properlength so that the regulatorassembly circuit card is notshorted out.

NOTEIf the regulator assembly (12)is replaced, remove twomachine screws (14) andtransfer the data plate (15) tothe new regulator assembly.

Install regulator assembly (12) and fourmachine screws (13) in elbow assembly(2).


3-7. SWITCH ASSEMBLY–MAINTENANCE INSTRUCTIONS.

THIS TASK COVERS:


INITIAL SETUP

Applicable Configurations ReferencesM32E1 and M32CE1 tank periscope TM 9-1240-379-34P

TM 750-116Tools and Special Tools

Instrument and fire control shop equip- Equipment Conditionsment (SC 4931-95-CL-A07) Page 3-15 Switch assembly removed

Instrument and fire control system repair from elbow assemblyshop equipment (SC 4931-95-CL-A09)

Materials/PartsSolder (item 18, app B)

3-19


3-7. SWITCH ASSEMBLY – MAINTENANCE INSTRUCTIONS. (cont)

DISASSEMBLY

1 Loosen two setscrews (1) and removeRETICLE control knob (2).

2 Loosen two setscrews (3) and removeTUBE control knob (4).

3 Remove machine screw (5) and stud ter-minal (6) from plate (7).

4 Remove nut (8), lockwasher (9), spacer(10), and packing (11); pull out TUBEvariable resistor (12).

5 Unsolder fixed resistor (13) from terminallug (14) and TUBE variable resistor (12).

6 Remove ground strap from TUBE variableresistor (12) and unsolder terminal lugs(14) and (15) from wire (16).

7 Remove nut (17) and lockwasher (18);pull out RETICLE variable resistor (19).

8 Unsolder wires from fixed resistor (20)and stud terminal (6) to RETICLE variableresistor (19).

3-20


INSPECTION/REPAIR

Replace any damaged, missing, or brokenparts. See TM 9-1240-379-34P.

REASSEMBLY

Wiring Diagram for Switch Assembly

N O T ERefer to wiring diagram asneeded during reassembly

3-21


3-7. SWITCH ASSEMBLY–MAINTENANCE INSTRUCTIONS. (cont)

REASSEMBLY

1 Fabricate replacement electrical wire(fig. C-3, app C).

2 Attach f ixed resistor (1) to stud ter-minal (2) and RETICLE variable resistor(3) using solder.

3 Secure RETICLE variable resistor (3) toplate (4) with lockwasher (5) and nut(6) .

4 Attach terminal lugs (7) and (8) to wire(9) using solder.

5 Install ground strap on TUBE variableresistor (10).

6 Attach fixed resistor (11) to terminallug (7) and TUBE variable resistor (10)using solder.

7 Secure TUBE variable resistor (10) toplate (4) with packing (12), spacer (13),lockwasher (14), and nut (15).

8 Install stud terminal (2) and machinescrew (16).

9 Install TUBE control knob (17) andtighten two setscrews (18).

10 Install RETICLE control knob (19) andtighten two setscrews (20).


3 - 2 2


Section Ill. FINAL INSPECTION

3-8. SCOPE. steps will certify the tank periscope as com-pletely serviceable for return to the user.

Final inspection of the tank periscope isdone after repair has been completed to be 3-10. INSPECTION OF TANK PERl-

sure that it is serviceable according to SCOPE.established standards.

a. Completeness. The tank periscope3-9. PURPOSE. must be complete with all necessary at-

taching hardware in place and secured.Satisfactory completion of final inspection

b. Parallax (Elbow Assembly, Infrared c. Focus (Elbow Assembly, Infrared BodyBody Assembly, and Daylight Body Assembly, and Daylight Body Assembly).Assembly). Look at a target at 1200 meters(3937 feet) through the daylight body (1) Elbow assembly and infrared bodyassembly. Parallax should not exceed the assembly. Viewing through a dioptometer,thickness of one reticle line. If parallax ex- rotate the diopter ring to bring the phosphorceeds the thickness of one reticle line, grain of the face of the image intensifier intoloosen screw (1) and rotate eccentric (2) un- best focus. The diopter scale should index attil reticle line is superimposed on the target. zero within plus or minus 1/4 diopter.Tighten screw (1).

NOTEIf parallax still exceeds thethickness of one reticle line,return to depot.

3-23


3-10. INSPECTION OF TANK PERISCOPE. (cont)

(2) Daylight body assembly. Viewingthrough a dioptometer, rotate the diopterring to bring the daylight body reticle intobest focus. The diopter scale should indexzero plus or minus 1/4 diopter.

NOTEAttempt to position the tankperiscope on as level a planeas conditions permit. Deviationfrom this level plane will affectthe mil value obtained. Thischeck will normally suffice fordetermining parallelism of thereticle and image.

d. Parallelism of Reticle and Image. Lookthrough the daylight body assembly at atarget with sharp horizontal and vertical linessuch as a building at a distance of 1200meters (3937 feet). The lines on the targetshould be parallel with the lines on the reti-cle image in the daylight body assemblywithin two mils of arc. Repeat this checklooking through eyepiece of the elbowassembly.

NOTESteps e thru g below pertainto the elbow assembly only.

e. Shutter Assembly Switch. Connecttank periscope to a 24 V dc power source

and at light conditions that simulate dawn ordusk, turn shutter assembly switch ON.Look into the eyepiece and make sure thatan image is visible. If needed, rotate TUBEcontrol knob clockwise from LO to HI untilan image appears.

f. TUBE Control Knob. With tankperiscope connected to a power source andthe shutter assembly switch ON, rotateTUBE control knob clockwise throughout itsrange from LO to HI while observing imagethrough the eyepiece. Be sure that the lightlevel increases and decreases as the TUBEcontrol knob is turned clockwise andcounterclockwise, respectively.

g. RETICLE Control Knob. With tankperiscope connected to a power source andthe shutter assembly switch ON, rotate theRETICLE control knob clockwise from OFFand LO to HI. The image of the reticleshould appear as you look into the eyepiece.The image should grow brighter as yourotate the RETICLE control knob towards HI,become dimmer as you return to LO, anddisappear when you turn it OFF.

h. Electrical Operation. Make sure that allelectrical systems function properly and thatthe electrical system of the infrared bodyassembly operates properly in both modes.

3-24


APPENDIX AREFERENCES

A-1. TECHNICAL MANUALS.

TM 9-254 . . . . . . . . . . . . . . . . . . . . . . . . . . General Maintenance Procedures for Fire ControlMateriel

TM 9-258 . . . . . . . . . . . . . . . . . . . . . . . . . . Elementary Optics and Application to Fire Con-trol Instruments

TM 9-1240-379-34P . . . . . . . . . . . . . . . . . . Direct Support and General SupportMaintenance Repair Parts and Special Tools List(Including Depot Maintenance Repair Parts) ForTank Periscope: M32 (1240-00-766-4287),M32C (1240-00-762-9335), M32E1(1240-00-016-2272), M32CE1(1240-00-092-7910)

TM 9-2350-215-10-1 . . . . . . . . . . . . . . . . . . Operator’s Manual: Operator’s Controls andPMCS for Tank, Combat, Full-Tracked: 105-MMGun, M60A1

TM 9-2350-257-10-1 . . . . . . . . . . . . . . . . . . Operator’s Manual for Tank, Combat, Full-Tracked: 105-MM Gun, M60A1 (Rise) andM60A1 (Rise Passive)

TM 9-2350-258-10 . . . . . . . . . . . . . . . . . . . . Operator’s Manual for Tank, Combat, Full-Tracked, 105-MM Gun, M48A5

TM 9-2350-260-10-1 . . . . . . . . . . . . . . . . . . Operator’s Manual: Operator’s Controls andPMCS for Tank, Combat, Full-Tracked: 105-MMGun, M60

TM 750-116. . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . General Procedures for Purging and Charging ofFire Control Instruments

TM 750-244-6 . . . . . . . . . . . . . . . . . . . . . . . . Procedures for Destruction of Tank-AutomotiveEquipment to Prevent Enemy Use

TM 4700-15/1 . . . . . . . . . . . . . . . . . . . . . . . . Marine Corps Equipment Record Procedures

A-2. SUPPLY CATALOGS.

SC 4931-95-CL-A07 . . . . . . . . . . . . . . . . . . Shop Equipment, Instrument and Fire Control:Field Maintenance, Basic, Less Power

SC 4931-95-CL-A09 . . . . . . . . . . . . . . . . . . Shop Equipment, Instrument and Fire ControlSystem Repair: Field Maintenance

A-1


A-2. SUPPLY CATALOGS. (cont)

SC 4931-95-CL-J52 . . . . . . . . . . . . . . . . . . . . Fire Control Maintenance and Repair ShopSpecialized Equipment Wrench Set, Spanner,DS, GS, and Depot Maintenance: Tube Double-End Concave Inserted Blade, Set of 76Wrenches

A-3. BLANK FORMS.

DA 2028 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Recommended Changes to Publications andBlank Forms

DA 2028-2 . . . . . . . . . . . . . . . . . . . . . . . . . . Recommended Changes to Equipment TechnicalPublications

MCO 4855.10 . . . . . . . . . . . . . . . . Quality Deficiency Report

NAVMC 10772 . . . . . . . . . . . . . . . . . . . . . . Recommended Changes to Navy and MarineCorps Equipment/Technical Publications

SF 368 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quality Deficiency Report(Category II)

A-4. MISCELLANEOUS PUBLICATIONS.

CTA 8-100 . . . . . . . . . . . . . . . . . . . . . . . . . . Army Medical Department Expendable/DurableItems

CTA 50-970 . . . . . . . . . . . . . . . . . . . . . . . . Expendable/Durable Items (Except: Medical,Class V, Repair Parts and Heraldic Items)

DA PAM 738-750 . . . . . . . . . . . . . . . . . . . . The Army Maintenance Management System(TAMMS)

FM 21-11 . . . . . . . . . . . . . . . . . . . . . . . . . . .. First Aid for Soldiers

MIL-P-116 . . . . . . . . . . . . . . . . . . . . . . . . . . .. Methods of Preservation

A-2


APPENDIX B

EXPENDABLE/DURABLE SUPPLIES AND MATERIALS LIST

Section I. INTRODUCTION

B-1. SCOPE.

This appendix lists expendable/durable sup-plies and materials you will need to operateand maintain the tank periscope. This listingis for informational purposes only and is notauthority to requisition the listed item. Theseitems are authorized to you by CTA 50-970,Expendable/Durable Items (Except Medical,Class V, Repair Parts, and Heraldic Items), orCTA 8-100, Army Medical Department Ex-pendable/Durable Items.

B-2. EXPLANATION OF COLUMNS.

a. Column (1)–Item Number. Thisnumber is assigned to the entry in the listingand is referenced in the narrative instruc-tions to identify the material (e.g., “Usecleaning compound, item 5, app B.”).

b. Column (2)–Level. This column iden-tifies the lowest level of maintenance thatrequires the listed item.

c. Column (3)–National Stock Number.This is the National stock number assignedto the item; use it to request or requisitionthe item.

d. Column (4)–Description. Indicates theFederal item name and, if required, adescription to identify the item. The last linefor each item indicates the Federal SupplyCode for Manufacturer (FSCM) in paren-theses followed by the part number.

e. Column (5)–Unit of Measure (U/M).Indicates the measure used in performing theactual maintenance function, This measure isexpressed by a two-character alphabeticalabbreviation (e.g., ea, in., pr). If the unit ofmeasure differs from the unit of issue, req-uisition the lowest unit of issue that willsatisfy your requirements.

F–Direct Support MaintenanceH–General Support Maintenance

B -1


Section Il. EXPENDABLE/DURABLE SUPPLIES AND MATERIALS LIST

(1)

ITEMNUMBER

1

2

3

4

5

6

7

8

9

10

11

12

13

14

B - 2

(2)

LEVEL

H

F

F

F

F

F

F

F

F

F

F

F

F

F

(3)

NATIONALSTOCK

NUMBER

8040-00-225-4548

8105-00-269-4662

8020-00-244-0153

8115-00-995-2757

. . .

5350-00-221-0872

8135-00-989-9888

6850-00-281-1985

6810-00-264-6507

8415-00-823-7457

9150-00-269-8255

6830-00-782-2641

8135-00-242-5610

6640-00-436-5000

(4)

DESCRIPTION

ADHESIVE, silicone, white(81349) MIL-A-46106

BAG, PLASTIC(81349) MlL-B-117

BRUSH, ARTIST’S(81348) H-B-241

BOX, SHIPPING(81348) PPPB636

CAP, PROTECTIVE(81349) MIL-C-5501

CLOTH, ABRASIVE, CROCUS(81348) P-C-458

CUSHIONING MATERIAL(81348) PPPC1120

DRY CLEANING SOLVENT(81348) P-D-680

ETHYL ALCOHOL, ACS(81349) O-E-00760

GLOVES, CHEMICAL AND SOLVENTRESISTANT(81348) ZZ-G-381

GREASE, AIRCRAFT(81349) MIL-G-4343

NITROGEN, TECHNICAL(81348) BBN411

PAPERBOARD, WRAPPING ANDCUSHIONING(81348) PPP-P-291

PAPER, LENS(81348) NNNP40

(5)

U/M

OZ

EA

E A

EA

EA

SH

YD

G L

GL

PR

LB

TK

RO

S H


(1)

ITEMNUMBER

15

16

17

18

19

2 0

21

22

(2)

LEVEL

F

F

F

F

F

F

F

F

(3)

NATIONALSTOCK

NUMBER

8135-00-664-0028

8030-00-252-3391

8135-00-239-5311

3439-00-453-5472

8135-00-292-2351

7150-00-266-6716

7510-00-053-0942

8110-00-271-1510

(4)

DESCRIPTION

PAPER, WRAPPING, LAMINATEDAND CREPED(81349) MIL-P-130

SEALING COMPOUND(81349) MIL-S-45180

SEAL, STRAPPING(81348) QQS781

SOLDER, TIN ALLOY(81348) QQ-S-571

TAG, SHIPPING(81348) UU-T-81

TAPE, PRESSURE SENSITIVE(81348) PPP-T-97

TAPE, PRESSURE SENSITIVEADHESIVE(81348) PPPT76

TUBE, MAILING(81348) PPP-T-495

(5)

U/M

RO

OZ

EA

RO

EA

IN.

IN.

EA

B-3/(B-4 blank)


APPENDIX C

ILLUSTRATED LIST OF MANUFACTURERED ITEMS

C-1. INTRODUCTION.

a. This appendix includes complete in- specification number in a tabular list on thestructions for making items authorized to be illustration.manufactured or fabricated at general sup-port maintenance. Part Number

b. A part number index in alphanumeric M16878/1BFE9order is provided for cross-referencing the M16878/4BFE0

Figure

. . . . . . . . . . . . . . . . . . . C-3

. . . . . . . . . . . . . . . . . . . C-5part number of the item to be manufactured M16878/4BGE9 . . . . . . . . . . . . . . . . . . . C-1to the figure which covers fabrication M23053/5-104-9 . . . . . . . . . . . . . . . . . C-2criteria. M7444-1-1-16 . . . . . . . . . . . . . . . . . . .. C-2

10556096 . . . . . . . . . . . . . . . . . . . . . .. C-4c. All bulk materials needed for manufac-

ture of an item are listed by part number or

C-2. FABRICATION INSTRUCTIONS.

All dimensions shown are in inches with the metric conversion to centimeters in parentheses.

Figure C-1. Insulated Wire (Part No. M16878/4BGE9).

NOTES:1. Required for daylight body assembly.2. Fabricate from NSN 6145-01-110-8905.3. Material: wire, insulated.4. Strip insulation from both wire ends as illustrated.5. Tin wire ends with solder (item 18, app B).

C-1


C-2. FABRICATION INSTRUCTIONS. (cont)


Figure C-2. Insulation Sleeving (Part No. M7444-1-1-16 or M23053/5-104-9).

NOTES:1. Required for infrared body assembly.2. Fabricate from NSN 5970-00-833-9166 or 5970-00-088-2975.3. Material: sleeving, insulation.


Figure C-3. Insulated Wire (Part No. M16878/1BFE9).

NOTES:1. Required for switch assembly.2. Fabricate from NSN 6145-00-652-1784.3. Material: wire, insulated.4. Strip insulation from both wire ends as illustrated.5. Tin wire ends with solder (item 18, app B).

C-2



Figure C-4. Special Threaded Tool (Part No. 10556096).

NOTES:1. Required for elbow assembly.2. Fabricate from NSN 9640-00-203-5748.3. Material: aluminum alloy 2024 or 6061.4. Finish: 7.2.2 (dyed black) of MlL-STD-171.

C-3


C-2. FABRICATION INSTRUCTIONS. (cont)


Figure C-5. Insulated Wire (Part No. M16878/4BFE0).

NOTES:1. Required for infrared body assembly.2. Fabricate from NSN 6145-00-062-6683.3. Material: wire, insulated.4. Strip insulation from both wire ends as illustrated.5. Tin wire ends with solder (item 18, app B).

C-4


ALPHABETICAL INDEX

C

G S * *

Common tools and equipment . . . . . . . . . . . . . . . . . . . . . . . . . . .

Daylight body assembly:DisassemblyInspection/repairMaintenanceReassembly

Destruction

Differences

of Army materiel

between models

Elbow assembly:Disassembly . . . . . . . . . . .Inspection/cleaning/repair Inspection/repair . . . . . . . .Maintenance . . . . . . . . . .Reassembly . . . . . . . . . . .

D

to prevent enemy use

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

E

Equipment characteristics, capabilities, and features

Expendable supplies and materials list . . . . . . . . . .

Eyepiece assembly:Disassembly . . . . . . . . . . . . . . . . . . .Inspection/cleaning/repair . . . . . . . . . . . . . . . . . .Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . .Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F

Final inspection . . . . . . . . . . . . . . . . . . . . . . . . . . .

H

Head assembly:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . .

3-23. . . . . . . . . . . . . . . . . . . . .

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection/cleaning/repair. . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection/repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

*Direct support maintenance* *General support maintenance

DS*

1-2

2-162-202-162-20

1-1

1-7

2-392-41

2-392-42

1-3

B-1

2-482-482-472-48

2-12

2-132-112-14

1-2

3-53-63-53-6

1-1

1-7

3-16

3-163-153-17

1-3

B-1

3-33-4

3-33-4

Index 1


I

Illustrated list of manufactured items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Infrared body assembly:Diassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection/repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . .

Inspection of tank periscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

G S * *

L

Location and description of major components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

M

Maintenance forms, records, and reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

Official nomenclature, names, and designations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Optical cell assembly:Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection/cleaning/repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

P

Pre-embarkation inspection of materiel in unitsalerted for overseas movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preparation for storage or shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Prism cell:Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection/cleaning/repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DS*

2-282-302-272 - 3 1

1-4

1-1

1-2

1-8

2-372-382-372-38

2-50

2-49

2-462-462-452-47

C-1

3-93-123-93-13

3-23

1-4

1-1

1-2

1-8

3-73-83-73-8

*Direct support maintenance**General support maintenance

Index 2


R

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reporting equipment improvement recommendations (EIR) . . . . . . . . . . . . . . .

S

Safety, care, and handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Special tools, TMDE, and support equipment . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch assembly:Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection/repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T

Tank periscope:Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection/cleaning/repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting information. . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .

DS*

A-1

1-2

1-2

G S * *

1-8

1-1

1-2

A-1

1-2

1-2

1-8

1-1

1-2

3-203-213-193-21

2-82-92-82-10

2-1 3-1

*Direct support maintenance * *General support maintenance

Index 3/(Index 4 blank)

By Order of the Secretary of the Army:

CARL E. VUONOGeneral United States Army

Chief of Staff

Official:

R. L. DILWORTHBrigadier General United States Army

The Adjutant General

DISTRIBUTION:

To be distr ibuted in accordance wi th DA Form 12-41, Direct Support and GeneralSupport Maintenance requirements for Per iscope, Tank, M32E1.

J. J. WENTLT. GEN, U.S. Marine CorpsD e p u t y C h i e f o f S t a f f f o r I n s t a l l a t i o n a n d L o g i s t i c s

DISTRIBUTION;AA, AS, L82

✫ U . S . G O V E R N M E N T P R I N T I N G O F F I C E : 1 9 8 8 5 4 2 - 0 4 3 / 8 0 1 3 4

ARMY TM 9-1240-379-34 MARINE CORPS TM 04332A-34

P I N : 0 3 3 6 9 8 - 0 0 0

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