parts list for hydraulic drifter model:...

PARTS LIST

For

Hydraulic Drifter

Model: YH80A

Read this instruction manual before operating this equipment.

This manual contains important safety information.

Do not destroy this manual.

This manual must be available to the personnel who operate and maintain

this machine.

CPN 51989127 PL6105

-- 1 --

CONSTRUCTION AND DRILLING EQUIPMENT

SOLD BY DISTRIBUTORS

Warranty

Ingersoll--Rand, through its distributor, warrants that

each item of equipment manufactured by it and delivered

hereunder to the initial user to be free of defects in mate-

rial and workmanship for a period of three (3) months

from initial operation or six (6) months from the date of

shipment to the initial user, whichever first occurs.

With respect to the following types of equipment, the

warranty period enumerated will apply in lieu of the fore-

going warranty period.

A. Aftercoolers, Drill Mountings and Klemm Rotary

Heads -- The earlier of six (6) months from initial op-

eration or nine (9) months from date of shipment to

the initial user.

B. Portable Compressors, Portable Generator Sets

(GENSET), Portable Light Towers and Abrasive

Blasting Equipment. The earlier of twelve (12)

months from shipment to, or the accumulation of

2,000 hours of service by, the initial user.

C. All Compressor Air Ends, GENSET Generators and

Paving Breakers -- The earlier of twenty--four (24)

months from shipment to, or the accumulation of

4,000 hours of service by, the initial user. For Air

Ends, the warranty against defects will include re-

placement of the complete Air End, provided the

original Air End is returned assembled and un-

opened.

D. Pavers, Milling Machines, Pedestrain Compactors

(including baseplates, upright and walk behinds)

and Rotary Drills -- The earlier of (6) months from

shipment to, or the accumulation of 1,000 hours of

service by, the initial user.

E. Jackhammers, Forklifts and Self--Propelled Com-

pactors -- The earlier of twelve (12) months from

shipment to, or the accumulation of 1,000 hours of

service by, the initial user.

F. Downhole Drills -- In lieu of the repair or replace-

ment of defective parts Ingersoll--Rand may elect to

issue full or partial credit toward the purchase of a

new part. The extent of credit issued will be deter-

mined by pro rating against the normal service life

of the part in question.

G. Spare Parts (excluding downhole drills) -- Three (3)

months from date of shipment.

Ingersoll--Rand will provide a new part or repaired

part, at its election, in place of any part which is found

upon its inspection to be defective in material and work-

manship during the period prescribed above. Such part

will be repaired or replaced without charge to the initial

user during normal working hours at the place of busi-

ness of an Ingersoll--Rand distributor authorized to sell

the type equipment involved or other establishment

authorized by Ingersoll--Rand. User must present proof

of purchase and date at the time of exercising warranty.

This warranty does not apply to failures occurring as

a result of abuse, misuse, negligent repairs, corrosion,

erosion and normal wear and tear, alterations or modifi-

cation made to the product without express written con-

sent of Ingersoll--Rand; or failure to follow the recom-

mended operating practices and maintenance proce-

dures as provided in the product’s operating and mainte-

nance publications.

Accessories or equipment furnished by Ingersoll--

Rand, but manufactured by others, including, but not lim-

ited to, engines, tires, batteries, engine electrical equip-

ment, hydraulic transmissions, carriers, shall carry what-

ever warranty the manufacturers have conveyed to Inger-

soll--Rand and which can be passed on to the initial user.

THIS WARRANTY IS IN LIEU OF ALL OTHER WAR-

RANTIES (EXCEPT OF TITLE), EXPRESSED OR IMPLIED,

AND THERE ARE NO WARRANTIES OF MERCHAN-

TABILITY OR OF FITNESS FOR A PARTICULAR PUR-

POSE.

Limitation of Liability

THE REMEDIES OF THE USER SET FORTH UNDER

PROVISIONS OF WARRANTY OUTLINED ABOVE ARE

EXCLUSIVE AND THE TOTAL LIABILITY OF INGER-

SOLL--RAND OR ITS DISTRIBUTORS WITH RESPECT TO

THIS SALE OR THE EQUIPMENT AND SERVICE FUR-

NISHED HEREUNDER, IN CONNECTION WITH THE PER-

FORMANCE OR BREACH THEREOF, OR FROM THE

SALE, DELIVERY, INSTALLATION, REPAIR OR TECHNI-

CAL DIRECTION COVERED BY OR FURNISHED UNDER

THIS SALE. WHETHER BASED ON CONTRACT, WAR-

RANTY, NEGLIGENCE, INDEMNITY, STRICT LIABILITY

OR OTHERWISE SHALL NOT EXCEED THE PURCHASE

PRICE OF THE UNIT OF EQUIPMENT UPON WHICH

SUCH LIABILITY IS BASED.

INGERSOLL--RAND, ITS SUPPLIER(S) AND ITS DIS-

TRIBUTORS SHALL IN NO EVENT BE LIABLE TO THE

USER, ANY SUCCESSORS IN INTEREST OR ANY BENE-

FICIARY OR ASSIGNEE RELATING TO THIS SALE FOR

ANY CONSEQUENTIAL, INCIDENTAL, INDIRECT, SPE-

CIAL OR PUNITIVE DAMAGES ARISING OUT OF THIS

SALE OR ANY BREACH THEREOF, OR ANY DEFECTS IN,

OR FAILURE OF, OR MALFUNCTION OF THE EQUIP-

MENT UNDER THIS SALE WHETHER BASED UPON

LOSS OF USE, LOST PROFITS OR REVENUE, INTEREST,

LOST GOODWILL, WORK STOPPAGE, IMPAIRMENT OF

OTHER GOODS, LOSS BY REASON OF SHUTDOWN OR

NON--OPERATION, INCREASED EXPENSES OF OPERA-

TION OF THE EQUIPMENT, COST OF PURCHASE OF RE-

PLACEMENT POWER OR CLAIMS OF USERS OR CUS-

TOMERS OF THE USER FOR SERVICE INTERRUPTION

WHETHER OR NOT SUCH LOSS OR DAMAGE IS BASED

ON CONTRACT, WARRANTY, NEGLIGENCE, INDEMNITY,

STRICT LIABILITY OR OTHERWISE.

INGERSOLL--RAND COMPANY (LD--132)

-- 2 --

INDEX

For

Hydraulic Drifter YH80A

PARTS LIST

July 24, 1995

PL6105

Index

Page 1 of 2

ORDERING INSTRUCTIONSWhen ordering service parts, please specify:

1. The NAME of each part as listed.2. The PART NUMBER as listed or stamped on the part.3. The SERIAL NUMBER of the equipment.

All information, illustrations, and specifications in this parts list are based on the latestinformation available at the time of publication. Product improvement is a continuinggoal at Ingersoll-Rand. Design and specifications are subject to change without noticeor obligation.

SAVE THESE INSTRUCTIONS. DO NOT DESTROY.

When the life of the tool has expired, it is recommended that the tool be disassembled,degreased and parts be separated by material so that they can be recycled.

SERIAL NUMBER IS STAMPEDIN THIS AREA.

, Index, PL6105

NAME OF ASSEMBLYComponents of an assembly

are indented.

SectionNo.

ManualNo.

Each column includes the Parts ListSection Numbers applicable to the assembly.

Introduction PL6105 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hydraulic Drifter YH80A PL6105 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reverse Percussion Kit PL6105 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rotation Motor PL6036 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Information PL6105 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INTRODUCTION

PARTS LIST

July 24, 1995

PL6105

Section 1

Page 1 of 2

Alphabetical Index

Title Page No.

Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Safety First 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Safety Precautions 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. INTRODUCTION.

This parts list contains spare part numbers,general model information and importantsafety information for the Hydraulic DrifterYH80A (hereafter referred to as drifter).

2. SAFETY FIRST.

SAFETY FIRST is the primary concern forthe protection of both, personnel and thedrifter during any phase of operation. Allpersonnel must thoroughly understand allsafety precautions before operating or do-ing any maintenance work on the drifter.

3. SAFETY PRECAUTIONS.

The Safety Precautions listed are intendedtomake all personnel aware of the hazardswhile working on or near a drifter. All per-sonnel must use common sense and agood working practice while operating andmaintaining this drifter. These safety pre-cautions listed are of a general nature andcannot cover every possible situation:

a. Do not attempt to operate the hydraulicdrifter unless you are thoroughly familiarwith all the crawler gauges, controls, andfunctions. Refer to the section of thecrawler instruction book for detailed

instructions. Failure to comply could resultin bodily injury.

b. Always wear approved hard hat, safetyshoes, safety glasses, nose mask and earprotection when near a drifter in operation.

c. Use only Ingersoll--Rand replace--ment parts.

d. Keep hands, arms, legs and clothingaway from all moving parts. Failure tocomply could result in bodily injury.

e. The drifter, striking bar, couplings, drillsteels and bit are hot during the drillingoperation. Do not touch these parts withyour bare hands. Wear gloves to protectyour hands when you are changing bits orsteels. A severe burn will result if rotatingparts are touched with bare hands.

f. Keep all hose connections tight. Aloose hose connection not only causesleaks and poor performance, but may alsoallow the hose to come off the drifter, whiparound, and injure the operator or otherpeople in the area.

g. Make sure that the parts--cleaningsolvent is non--flammable, will not harm theskin, meets current safety and healthstandards, and is used in well ventilatedarea.

, Section 1, PL6015

h. Dry nitrogen is the only gas product tobe used to charge the drifter accumulators.Never use oxygen to charge theaccumulators. Ignition of an oxygen andoilmixture could produce an explosion, whichcould severely injure personnel in the area.

i. Be sure to bleed the accumulatorsbefore any accumulator disassembly is

attempted.

j. Make sure the accumulators are ingood condition. Make sure theaccumulator components have no cracksor signs of excessive wear. Whenpressurized, a damaged accumulatorcould burst, scattering metal fragmentsthroughout the area which could severelyinjure personnel.

YH80A HYDRAULIC DRIFTER

PL6105

Section 2

Parts List

Revision 2

November 6, 1997

HYDRAULIC DRIFTER(For Parts List, refer to Page 2)

LP

HP

HP

, Section 2, PL6105

Hydraulic Drifter YH80A (cont.)(For Illustration of parts, refer to Page 1)

REF.

NO. PART NO. QTY. PART NAME REMARKS

51964237 Hydraulic Drifter YH80A

51317196 1 ASSEMBLY, BACKHEAD1 51317204 1 .BACKHEAD2 51206068 1 .SUPPORTER, BLOW TUBE3 50787738 1 .PLUG

4 50787753 1 .PLUG� 5 51325041 1 .O--RING� 6 51325058 1 O--RING

7 51327716 1 .PIN, SPRING

8 51313259 1 .BUSHING9 51165850 1 .ADAPTER, HOSE10 51176501 1 .ADAPTER

11 51175834 1 .PLUG

12 51162204 1 .SEAL51206126 1 ASSEMBLY, BACKHEAD GLAND

13 51206134 1 .GLAND, BACKHEAD14 50748250 1 .SEAL

15 51206639 1 .ADAPTER16 51176543 1 .NUT, HOSE

� 17 51103778 1 .O--RING51317246 1 ASSEMBLY, BLOW TUBE

18 51317253 1 .TUBE, BLOW

19 51206167 1 .RUBBER20 51206175 1 .HOLDER, RUBBER

53065215 1 ASSEMBLY, CYLINDER

21 51317279 1 .CYLINDER

� 22 51104230 1 .O--RING23 51153658 1 .BUSHING24 51165918 1 ADAPTER, HOSE

25 51327773 1 .PLUG

� 26 50787043 2 O--RING

53107207 1 ASSEMBLY, CYLINDER LINER27 51317303 1 .LINER, CYLINDER

28 51317311 2 .SEAL53102539 1 .SEAL

� 51669976 1 ASSEMBLY, BACK LINER

29 51669984 1 .LINER, CYLINDER BACK

30 51325941 1 .O--RING31 51317345 1 .SEAL

(continued)

, Section 2, PL6105


REF.


51964237 Hydraulic Drifter YH80A (cont.)

32 51317352 1 .SEAL33 51317360 1 ,GUIDE

34 51669992 1 VALVE� 35 51317386 1 PISTON

� 51317394 1 ASSEMBLY, FRONT LINER

36 51317402 1 .LINER, FRONT37 51546026 1 .O--RING38 51317428 1 .RING, WIPER

52113122 3 ASSEMBLY, ACCUMULATOR

39 51206381 1 .BODY

40 51206399 1 .COVER

� 41 51206407 1 .DIAPHRAGM

42 51176741 1 .VALVE

� 43 53113130 1 .WASHER

44 50748334 1 .CAP

� 45 51104198 1 .DIAPHRAGM46 51260032 4 .BOLT

51317444 1 ASSEMBLY, HYDRAULIC MOTOR47 53066577 1 .MOTOR, HYDRAULIC

REFER TO PL6105, SECTION 4

48 51124840 1 .ELBOW49 51124816 1 .BUSHING

50 51165876 1 .ADAPTER, HOSE� 51 50787050 2 .O--RING� 52 51176808 1 .O--RING

53 51329308 4 .CAPSCREW51525988 1 ASSEMBLY, GEAR BOX

54 51525996 1 .BOX, GEAR55 51206498 1 BUSHING56 51176477 1 .PIN, SPRING

� 57 51206084 1 .O--RING51206514 1 ASSEMBLY, DRIVE GEAR

58 51206522 1 .GEAR, DRIVE

59 50781962 2 .BEARING, BALL51206530 1 ASSEMBLY, IDLER GEAR

60 51206548 1 .GEAR, IDLER

61 51206555 2 .BEARING, NEEDLE62 51206597 1 .SHAFT, GEAR

� 63 51104131 1 .O--RING51206613 1 ASSEMBLY, COVER

(continued)

, Section 2, PL6105


REF.


51964237 Hydraulic Drifter YH80A (cont.)

64 51206621 1 .COVER65 51104198 1 .O--RING

66 50945385 4 .BOLT51537165 1 ASSEMBLY, DRIVER

67 51206662 1 .DRIVER, CHUCK

68 51533107 1 .SET, BUSHING++ 1 ..ALIGNER, SHANK++ 1 ..BUSHING, SHANK

51526002 1 ASSEMBLY, CHUCK END69 51526010 1 .END, CHUCK

70 51206712 1 .BUSHING71 51104289 1 .O--RING72 51533073 1 .CHUCK

51964138 1 ASSEMBLY, CAP73 51964146 1 .CAP, CHUCK END

74 51964153 1 .LINER, CAP

++ 1 ..BUSHING++ 1 ..LINER

� 75 51104248 1 .O--RING51275238 2 .ASSEMBLY, BOLT

76 51275154 1 .BOLT77 51206787 1 .NUT, NYLON

51317485 4 ASSEMBLY, THROUGH BOLT78 51317493 1 .BOLT, THROUGH

79 51525954 1 .NUT

� 80 51103760 1 .O--RING51206829 1 ASSEMBLY, EYE BOLT

81 51206845 1 .PLATE, HOOK

82 51268050 2 .BOLT83 51206837 2 .BOLT, EYE

84 50855923 2 .WASHER, SPRING

� NOTICE: THESE PARTS ARE INCLUDED IN DRIFTER O--RING KIT 51676237

� NOTICE: THESE PARTS ARE INCLUDED IN DRIFTER SEAL KIT 51676245online

� NOTICE: THESE PARTS ARE INCLUDED IN DIAPHRAGM KIT 51676252

REVERSE PERCUSSION KIT

PARTS LIST

Revision 1

November 6, 1997

PL6105

Section 3

Page 1 of 2

Re

ve

rse

Pe

rcu

ss

ion

Kit

(Fo

rP

art

sL

ist,

refe

rto

Pa

ge

2)

I

, Section 3, PL6105

REVERSE PERCUSSION KIT(For Illustration of parts, refer to Page 1)

51526028 ASSEMBLY, CHUCK END 183 51526036 .END, CHUCK 184 51104289 .O--RING 185 51206712 .BUSHING, DU 1

86 51533073 CHUCK 151964187 ASSEMBLY, REVERSE HOUSING 1

87 51264661 .HOUSING, REVERSE 188 51964195 .LINER 189 51104263 .O--RING 1

51333722 ASSEMBLY, BOLT 490 51264778 .BOLT 191 51264786 .NUT, NYLON 1

51333698 ASSEMBLY, BOTTOM CYLINDER 1

92 51264679 .CYLINDER, BOTTOM 193 51161636 .O--RING 194 51156461 .RING, BACK-UP 195 51264695 .SEAL 2

96 51264703 .RING, WEAR 151964203 ASSEMBLY, TOP CYLINDER 1

97 51964211 .CYLINDER, TOP 198 51104248 .O--RING 199 51325447 .SEAL 1

100 51325777 .RING, WEAR 1101 51964229 .PISTON 1

53115994 ASSEMBLY, ACCUMULATOR 2103 51264802 .BODY, ACCUMULATOR 1

104 51264810 .COVER, ACCUMULATOR 1105 51264828 .DIAPHRAGM 1106 51176741 .VALVE 1107 53113130 .WASHER, SEAL 1108 51176766 .CAP 1

109 51104172 O--RING 1110 51203909 .RING, BACK-UP 1111 51328029 .BOLT 4

NAME OF PARTParts indented under an itemare included with that item.

Reverse Percussion Kit(CONSISTS OF THE FOLLOWING)

QTY.PARTNO.

REFNO.

REMARKS

51975852

ROTATION MOTOR

PARTS LIST

January 21, 1994

PL6036

Section 4

Page 1 of 2

Rotation Motor -- Exploded Illustration

(For Parts List, refer to Page 2)

23

13 26

22

9 8

, Section 4, PL6036

Rotation Motor(For Illustration of parts, refer to Page 1)

1 51540847 HOUSING, BEARING 12 51540870 KIT, SHAFT/BEARING 13 51540896 PLATE, WEAR 1

4 51540904 DRIVE 15 51540912 GEROLER 16 51538999 DRIVE, VALVE 17 51540938 PLATE, VALVE 18 51539005 VALVE 1

9 51540953 PLATE, BALANCE 110 51539021 SPRING 211 51539013 PIN 212 51541001 HOUSING, VALVE 1

13 51541019 PLUG, BOSS 114 51541035 BALL, STEEL 215 51540987 PLUG, BOSS 216 51541084 BOLT 4

51676260 KIT, MOTOR SEAL 151287746 .KIT, SHAFT SEAL 1

17 NSS ..SEAL, DUST 118 NSS .O--RING 119 NSS .SEAL, OIL 1

20 NSS .SEAL, SHAFT FACE 151287738 KIT, MOTOR REAR SEAL 1

21 NSS .O--RING 222 NSS .O--RING 3

23 NSS .O--RING 124 NSS .SEAL, OUTER FACE 125 NSS .SEAL, INNER FACE 126 NSS .O--RING 127 NSS .O--RING 2

NAME OF PARTParts indented under an itemare included with that item.

Rotation Motor(CONSISTS OF THE FOLLOWING)

QTY.PARTNO.

REFNO.

REMARKS

51267623

NSS NOTICE: THESE PARTS ARE NOT SOLD SEPARATELY, THEY ARE INCLUDED IN THE KITIN WHICH THEY ARE INDENTED UNDER.

ben

Sticky Note

NEW # FOR ROT. MOTOR 53066577

GENERAL INFORMATION

PARTS LIST

July 24, 1995

PL6105

Section 5

Page 1 of 2

GENERAL.

The YH80A Hydraulic Drifter (drifter) is avalved, hydraulically--operated hammerdrill that incorporates an integral, indepen-dently--controlled, hydraulically--poweredrotation motor to rotate the drill steel andbit.

The drifter is capable of drilling 3 to 4 in. (75to 102 mm) diameter holes in all types ofrock formations. It is especially suitable forpipeline work, drilling vertical and angleholes in quarries, and on any constructionjobs where large volume rock excavationsare required.

ROTATION MOTOR.

The hydraulically--powered rotation motoris independently controlled and is de-signed to provide continuous drill steel ro-tation -- forward or reverse. Themotor con-verts hydraulic fluid to rotation power andtransmits the rotation power to the spurgear train housed in the drifter fronthead.The hydraulic rotation motor providessmooth, powerful rotation, especially at lowrotation speeds, and assures the operatorof positive rotation control under all drillingconditions.

BLOWER TUBE.

The drifter has a single blower tube con-struction. The blower tube carries holecleaning air from the inlet connection in thebackhead, through the center of the drifter,striking bar, steel and bit to the bottom ofthe hole without contacting any of the inter-nal parts of the drifter.

CHUCK PARTS.

The standard drifter is equippedwith chuckparts to accommodate a 6--spline strikingbar. The reverse percussion drifter is

equipped with chuck parts to accommo-date a 8--spline striking bar.

ACCUMULATORS.

The drifter uses three built--in nitrogen--charged, diaphragm--type accumulators todampen vibrations in the supply and returnlines. The high pressure accumulatorsmust be charged to 853 psi (60 kg/cm2)and the low pressure accumulators mustbe charged to 57 psi (4 kg/cm2).

An accumulator charging kit is fur-nished as an accessory item with themachine on which the drifter is used.

FRONT END LUBRICATION.

The drifter uses an oil mist to provide lubri-cation to all critical points in the front end ofthe drifter. A 3/8 in. (9.5 mm) diameterhose line connected to the drifter carriesthe oil--laden air from a lubricator (part ofthe drilling machine) to the drifter front endparts. Oil flow is controlled by the lubricatorlocated on the drilling machine.

Refer to IM6105, “Instruction ManualFor Hydraulic Drifter Model YH80A” formaintenance instructions.

REVERSE PERCUSSION OPTION.

(Furnished Only When Specially Ordered)

The standard drifter does not include re-verse percussion as standard equipement.The reverse percussion kit must be or-dered separately. Refer to Section 3 of thisparts list for part numbers.

, Section 5, PL6105

STRIKING BARS. (Furnished Only When

Specially Ordered) (Table 1)

The drifter does not include a striking bar

as standard equipment. The striking barmust be specially ordered. Table 1 lists theavailable striking bars for use with the drift-er.

Striking Bar Striking Bar Specifications

Table 1. Striking Bars

NOTICE: Use the 8--digit part number when ordering the requiredstriking bar.

♦ NOTICE: This striking bar is for use ONLY with the reverse percussionoption.

SB38YH80A 6--SPLINE DRIVE STD(53061370) 3/4” DIA. BLOWER TUBE

T38 MALE THREAD

SB38YH80ARP 6--SPLINE DRIVE RP(53061388) 3/4” DIA. BLOWER TUBE

T38 MALE THREAD


T45 MALE THREAD


T45 MALE THREAD


T51 MALE THREAD


T51 MALE THREAD

�

�

�

INSTRUCTION MANUAL

For

Hydraulic Drifter

Models: YH80A

Read this instruction manual before operating this equipment.

This manual contains important safety information.

Do not destroy this manual.

This manual must be available to the personnel who operate and maintain

this machine.

CPN 51999159 IM6105 Revision 1

(CONTINUED)

SectionTitle

TABLE OF CONTENTS

Instruction Manual

July 24, 1995

IM6105

Section TC--1

Page 1 of 2

INTRODUCTION 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Abbreviation List

Introduction

Reference Material

Support Equipment Required

SAFETY 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction

Safety Alert Symbol and Signal Words

Safety First

Safety Precautions

DESCRIPTION AND SPECIFICATIONS 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description

Introduction

Specifications

OPERATION 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Requirements

Basic Operating Principles

Drill Piston Reciprocation

Drill Steel Rotation

Charging the Drifter Accumulators

Connecting the Striking Bar to the YH80A Drifter

Connecting the Striking Bar to the YH80ARP Drifter

Drilling Procedures

Drilling Tips

Bit Care

Drill Steel Care

Suggestions for Drillers

Hoses and Fittings

Hydraulic Requirements

Introduction

Lubrication Requirements

Operating Controls

Receiving the New Drifter

, Section TC--1, IM6105

SectionTitle

TABLE OF CONTENTS (cont.)

MAINTENANCE 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description

Drifter

Hoses

Hydraulic System

Introduction

Lubricant Specifications

Drill Steel Thread Lubricant

Front End Lubricating Oil (Rock Drill Oil)

Hydraulic Oil

Maintenance

Accumulator Disassembly

Accumulator Reassembly

Drifter Disassembly

Drifter Reassembly

Hydraulic Rotation Motor Disassembly

Hydraulic Rotation Motor Reassembly

Inspection of Accumulator Pressures

Inspection of Parts

Reverse Percussion Disassembly

Reverse Percussion Reassembly

TROUBLESHOOTING 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction

Troubleshooting

MAINTENANCE RECORDS AND NOTES 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IM6105

Section 1

Page 1 of 2

INTRODUCTION

Instruction Manual

July 24, 1995

Alphabetical Index

Title Page No.

Abbreviation List 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reference Material 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Support Equipment Required 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. INTRODUCTION.

This instruction manual contains informa-tion for safety, operation, maintenance,service information and troubleshooting forthe Hydraulic Drifter Model YH80A (here-after referred to as drifter).

5. SUPPORT EQUIPMENT REQUIRED.

The support equipment required to operateand/or maintain the drifter is listed in Table1.

6. REFERENCE MATERIAL.

The reference materials required to oper-ate and/or maintain the drifter are listed inTable 2.

7. ABBREVIATION LIST.

Abbreviations listed in this manual that arenot common are listed in Table 3 with theproper definition.

For normal drilling conditions, a compressor having a capac-ity of 220 scfm (6.23 m3/min.) at 100 psi (7.03 kg/cm2). Forfronthead lubrication and hole cleaning.

29.27 GPM (110 Liters/Min.) at 1991 psi (140 kg/cm2).

11.89 GPM (45 Liters/Min.) at 1991 psi (140 kg/cm2).

Oil mist controlled from lubricator (on drilling machine).

Air Requirements:

Hydraulic Requirements

.Hammer Operation

.Drill Steel Rotation

Lubrication Requirements

Item Requirements or Specification

Table 1. Support Equipment Required

Manual No. Title of Manual

Parts List for Hydraulic Drifter Models YH80A.

Table 2. Reference Material

PL6105

, Section 1, IM6105

All information, illustrations, and specifications in this manual are based on the latestinformation available at the time of publication. Product improvement is a continuinggoal at Ingersoll-Rand. Design and specifications are subject to change withoutnotice or obligation.

Abbreviation, Symbol, or Term Meaning

Table 3. Abbreviation List

bpmbhpm3/min.ft.gpmin.IRkgkg/cm2

lbslb--ftlpmLL.H.mlmmmPaMNmpsiscfm

Blows Per MinuteBrake HorsepowerCubic Meters Per MinuteFeetGallons Per MinuteInchIngersoll--Rand

KilogramKilogram Per Square CentimeterPoundsPound--FootLiters Per MinuteLiterLeft--HandMillilitersMillimeterMega PascalsMeterNewton MeterPounds Per Square InchStandard Cubic Feet Per MinuteSafety Alert Symbol

SAVE THESE INSTRUCTIONS. DO NOT DESTROY.

When the life of the tool has expired, it is recommended that the tool be disassembled,degreased and parts be separated by material so that they can be recycled.

SAFETY

Instruction Manual

July 24, 1995

IM6105

Section 2

Page 1 of 2

Alphabetical Index

Title Page No.

Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Safety Alert Symbol and Signal Words 1. . . . . . . . . . . . . . . . . . . . . . . . . . .Safety First 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Safety Precautions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. INTRODUCTION.

This section contains important safety in-formation for the Hydraulic Drifter ModelYH80A (hereafter referred to as drifter).

9. SAFETY FIRST.

SAFETY FIRST is the primary concern forthe protection of both, personnel and thedrifter during any phase of operation. Allpersonnel must thoroughly understand allsafety precautions before operating or do-ing any maintenance work on the drifter.

10.SAFETY ALERT SYMBOL AND SIGNAL

WORDS.

TheSafetyPrecautions listed inTable 1areintended to make all personnel aware ofthe dangers while working on or near adrifter. All personnel must use commonsense and a good working practice whileoperating and maintaining this drifter. Theprecautions are of a general nature andcannot cover every possible situation.

All personnel must understand the DAN-GER, WARNING, CAUTION, andNOTICEused throughout the text of this instructionmanual, and on the Safety Labels locatedon the drifter. The DANGER, WARNING,CAUTION, andNOTICE are defined as fol-lows:

DANGER IS USED TO INDICATETHE PRESENCE OF A HAZARDWHICH WILL CAUSE SEVEREPERSONAL INJURY OR DEATH IFTHE WARNING IS IGNORED.

WARNING IS USED TO INDICATETHE PRESENCE OF A HAZARDWHICH CAN CAUSE SEVERE IN-JURY OR DEATH IF THE WARN-ING IS IGNORED.

CAUTION ISUSEDTO INDICATETHEPRESENCE OF A HAZARD WHICHWILL OR CAN CAUSE PERSONALINJURY, OR PROPERTY DAMAGE IFTHE WARNING IS IGNORED.

Notice is used to notify people of in-stallation, operation, ormaintenanceinformation which is important butnot hazard--related.

, Section 2, IM6105

By understanding what DANGER, WARN-ING, CAUTION, and NOTICE mean; andusing good judgment and common sense;all personnel canavoid injuring themselvesand/or damaging the drifter.

The Safety Labels shown in this manualand on the drifter are for operator protec-tion. Replacement Safety Labels can beobtained at no cost from your localIngersoll--Rand dealer or representative orby contacting the factory at:

Ingersoll--Rand CompanyRock Drill Division7500 Shadwell DriveRoanoke, Virginia 24019U.S.A.(540) 362--3321

11. SAFETY PRECAUTIONS.

The Safety Precautions listed are intendedtomake all personnel aware of the hazardswhile working on or near this drifter. All per-sonnel must use common sense and agood working practice while operating andmaintaining this equipment. These safetyprecautions listed are of a general natureand cannot cover every possible situation:

18. Do not attempt to operate the hydraulicdrifter unless you are thoroughly famil-iar with all the crawler gauges, controls,and functions. Refer to the section ofthe crawler instruction book for detailedinstructions. Failure to comply could re-sult in bodily injury.

19. Use only Ingersoll--Rand replace--ment parts.

20. Always wear approved hard hat, safetyshoes, safety glasses, nose mask andear protection when near a drifter in op-eration.

21. Keep hands, arms, legs and clothingaway from all moving parts. Failure tocomply could result in bodily injury.

22. The drifter, striking bar, couplings, drillsteels and bit are hot during the drillingoperation. Do not touch these partswith your bare hands. Wear gloves toprotect your hands when you arechanging bits or steels. A severe burnwill result if rotating parts are touchedwith bare hands.

23. Keep all hose connections tight. Aloose hose connection not only causesleaks and poor performance, but mayalso allow the hose to come off the drift-er, whip around, and injure the operatoror other people in the area.

24. Make sure that the parts--cleaning sol-vent is non--flammable, will not harmthe skin, meets current safety andhealth standards, and is used in wellventilated area.

25. Dry nitrogen is the only gas product tobe used to charge the drifter accumula-tors. Never use oxygen to charge theaccumulators. Ignition of an oxygenand oil mixture could produce an explo-sion, which could severely injure per-sonnel in the area.

26. Make sure the accumulators are ingood condition. Make sure the accu-mulator components have no cracks orsigns of excessive wear. When pres-surized, a damaged accumulator couldburst, scattering metal fragmentsthroughout the area which could se-verely injure personnel.

27. Be sure to bleed the accumulators be-fore any accumulator disassembly is at-tempted.

DESCRIPTION & SPECIFICATIONS

Instruction Manual

July 24, 1995

IM6105

Section 3

Page 1 of 3

Alphabetical Index

Title Page No.

Description 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Specifications 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12.INTRODUCTION.

This section provides a description andspecifications of the Hydraulic Drifter Mod-els YH80A (hereafter referred to as drifter).

13.DESCRIPTION.

The hydraulic drifter is a valved, hydrauli-cally--operated hammer drill that incorpo-rates an integral, independently--con-trolled, hydraulically--powered rotationmo-tor to rotate the drill steel and bit.

The drifter is capable of drilling 3 to 4 in. (76to 102mm) diameter holes in all types ofrock formations. It is especially suitable forpipeline work, drilling vertical and angleblast holes in quarries, and on any con-struction jobs where large volume rock ex-cavations are required.

Since the drifter is hydraulic, there are onlytwomoving parts to control hammer action:the piston and the piston valve. The pistonprovides the impact force which is trans-mitted to the drill steel. The valvealternate-ly switches pressure from supply to ex-haust. This action produces a high fre-quency reciprocation of 2600 cycles perminute. The piston strikes the striking baron each forward (power ) stroke, thus,transmitting the blow energy through thesteel to the bit at 2600 blows per minute.

The hydraulically--powered rotation motoris independently controlled and is de-signed to provide continuous drill steel ro-tation--forward or reverse. The motor con-

verts hydraulic fluid to rotation power andtransmits the rotation power to the spurgear train housed in the drifter fronthead.The hydraulic rotation motor providessmooth, powerful rotation, especially at lowrotation speeds, and assures the operatorof positive rotation control under all drillingconditions.

Since hammer action anddrill steel rotationare independently controlled, the bestcombination of individual control of bothfunctions can be selected for the most effi-cient drilling in a particular formation.

Since the drifter operates on hydraulic fluidpower, instead of air, its operation is unaf-fected by altitude. In addition, there is nonoise fromair exhaust and no fog buildup inworking areas.

The only air requirements for the drifter are:for hole cleaning and fronthead lubrication.The drifter is equipped with a 3/4 in.(19mm) outside diameter blower tubewhich carries hole cleaning air from the in-let connection in the backhead, through thecenter of the drifter, striking bar, drill steeland bit to the bottom of the hole withoutcontacting any of the internal parts of thedrifter.

THE DRIFTER ACCUMULATORSREQUIRE CHECKING EVERY 250HOURS OF OPERATION. REFERTO SECTION 5, PARAGRAPH 20.

, Section 3, IM6105

The drifter uses three nitrogen--chargeddiaphragm accumulators to dampen vibra-tions in the supply and return hoses. Thesupply line (high pressure) accumulatormust be charged to 853 psi (60 kg/cm2).The return line (low pressure) accumulatormust be charged to 57 psi (4 kg/cm2). Anaccumulator charging kit is furnished as astandard accessory itemwith the hydraulicmachine.

The drifter is designed with chuck parts toaccommodate a 6--splined striking bar.The reverse percussion model is designedwith chuck parts to accommodate a8--splined striking bar. A striking bar is notfurnished as standard equipment with thedrifter. The required striking bar must bespecially ordered. Refer to Table 3 for thepart number of the striking bars available

for use with the drifter and the specifica-tions of the striking bars.

An optional reverse percussion kit is avail-able for the drifter. This option helps in therecovery of jammed bits and rods in frac-tured ground. (This option uses a 8--splinestriking bar).

Do not use the reverse percussion continu-ously for over 10 to 15 seconds.

14.SPECIFICATIONS.

Tables 1 through 5 list the specifications forthe drifter.

English

463 lbs.40.35 in.14.17 in.11.61 in.1991 psi2600 bpm3/4 in.3/4 in.3/8 in.853 psi57 psi

853 psi

853 psi

210 kg1025 mm360 mm295 mm

140 kg/cm2

2600 bpm19 mm19 mm9.5 mm60 kg/cm2

4 kg/cm2

60 kg/cm2

60 kg/cm2

Table 1. Drifter Specifications

Net Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Overall Length (less striking bar) . . . . . . . . . . . . . . . . .Overall Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Overall Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drill Hammer Hydraulic Operating Pressure . . . . . . . . .Hammer Blows Per Minute (variable) . . . . . . . . . . . . . .Diameter of Drill Inlet Hydraulic Hose . . . . . . . . . . . . . .Diameter of Blower Hose . . . . . . . . . . . . . . . . . . . . . . . . .Diameter of Front End Lubrication Hose . . . . . . . . . . . .Supply Accumulator Charge Pressure (Drifter) . . . . . .Return Accumulator Charge Pressure (Drifter) . . . . . .Supply Accumulator Charge Pressure (ReversePercussion) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Return Accumulator Charge Pressure (ReversePercussion) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Metric

NOTICE: This data based on hydraulic supply of 29.27 gpm (110 liters/min) at 1991 psi(140 kg/cm2) at the inlet.

, Section 3, IM6105

Table 5. Shipping Information

English Metric

Net Weight of Drifter . . . . . . . . . . . . . . . . . . . . .Shipping Weight (Approx.) . . . . . . . . . . . . . . . .

463 lb483 lb

210 kg219 kg

Table 3. Striking Bar Specifications (Furnished only when specially ordered)

Striking Bar Striking Bar Specifications

6--Spline DriveT38 Thread (Male)For 3/4 in. (19mm) Diameter Blower Tube

Same as above except with T51 Thread (Male)

8--;Spline DriveT45 Thread (Male)For 3/4 in. (19mm) Diameter Blower Tube

NOTICE: Use 8--digit part number (51780989, 51781003 OR 51781128) when or-dering the required striking bar.

♦ NOTICE: This striking bar is for use ONLY with the reverse percussion option.

♦

Table 2. Rotation Motor Specifications

Diameter of Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . .

Stall Torque at Chuck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rotation Speed at Chuck (Normal Operating Speed) . . . .

Maximum Chuck Rotation Speed (Free Speed) . . . . . . . .

English Metric

1/2 in.

427 lb--ft

12.7 mm

578 Nm

NOTICE: This data based on hydraulic supply at 11.89 gpm (45 liters/min.) at 1991 psi(140 kg/cm2) at the inlet.

0 to 150 rpm

150 rpm

SB38YH65(51780989)

SB45YH65(51781003)

SB45SYH6F5RP(51781128)

Table 4. Drill Steel (Coupled Type)

Drill Steel Size Thread Size

1--1/2 in. (38mm) Hollow Round1--1/2 in. (38mm) Hollow Round

1--1/2 in. (38mm) T381--1/2 in. (38mm) T45

, Section 3, IM6105

Page 4, Section 3, IM6105

OPERATION

Instruction Manual

July 24, 1995

IM6105

Section 4

Page 1 of 6

Alphabetical Index

Title Page No.

Air Requirements 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Basic Operating Principles 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drill Piston Reciprocation 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drill Steel Rotation 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Charging the Drifter Accumulators 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Connecting the Striking Bar to the YH80A Drifter 4. . . . . . . . . . . . . . . . . . . .Connecting the Striking Bar to the YH80ARP Drifter 4. . . . . . . . . . . . . . . . .Drilling Procedures 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drilling Tips 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bit Care 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drill Steel Care 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Suggestions for Drillers 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hoses and Fittings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hydraulic Requirements 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lubrication Requirements 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Operating Controls 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Receiving the New Drifter 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15.INTRODUCTION.

This section provides air requirements, op-erating principles, hydraulic requirements,and lubrication requirements of the Hy-draulic Drifter Model YH80A (hereafter re-ferred to as drifter).

16.RECEIVING THE NEW DRIFTER.

Upon receipt of a new drifter, check thedrifter model number to see that it agreeswith the parts catalog. Attention in this areawill assure that the correct repair parts areordered when needed.

Before releasing a new drifter for service,remove all the shipping plugs from theports. These plugs are used to keep dirtout of the equipment during handling andshipping.

17.HYDRAULIC REQUIREMENTS.

The hydraulic power required to operatethe drifter is divided into two independentfunctions:

a. Hammer Operation -- The hydraulicsystem must be capable of supplying hy-draulic fluid to the drifter at a rate of 29.27gpm (110 liters/min.) at 1991 psi (140 kg/cm2).

b. Drill Steel Rotation -- The hydraulicsystem must be capable of supplying hy-draulic fluid to the rotation motor on thedrifter at a rate of 11.89 gpm (45 liters/min.)at 1991 psi (140 kg/cm2).

Ingersoll--Rand hydraulic crawler ma-chines are designed to use this hydraulicdrifter. Basically, its hydraulic system con-tains a fluid reservoir, which stores a sup-ply of hydraulic oil; pumps, which developand deliver the required hydraulic oil pres-

, Section 4, IM6105

sure and flow to operate the drifter and itsrotation motor; filters for removing particlecontamination from the oil supply; controlvalves to initiate hammer action and con-trol the speed and direction of the rotationmotor; and an oil cooler to maintain the en-tire system at an optimum operating tem-perature. An arrangement of hoses and fit-tings carries the oil from the reservoirthrough the pumps and regulating controlsto the drifter and rotationmotor and back tothe reservoir through the oil cooler.

18.LUBRICATION REQUIREMENTS.

The drifter uses an oil mist to provide lubri-cation to all critical points in the front end ofthe drifter. A 3/8 in. (9.5 mm) diameterhose, connected to the drifter, carries theoil--laden air from a lubricator (part of drill-ing machine) to the front end of the drifter.The amount of lubrication provided is con-trolled by the lubricator located on the drill-ing machine.

19.AIR REQUIREMENTS.

The air requirements for the drifter are forfront end lubrication and hole cleaning. Fornormal drilling conditions, a minimum flowof 10 scfm (.28 m3/min.) at a pressure of100 psi (7.03 kg/cm2) is required for lubri-cation and the remaining air for hole clean-ing.

20.HOSES AND FITTINGS.

Only quality hose designed especially forrock drill service should be used. It shouldbe constructed with an outer coveringwhich resists abrasive wear and have aworking pressure safety factor of at least 4to 1 in relation to burst.

Hoses and hose fittings must be in goodcondition, and the fittings must be kepttight.

The following lists the hoses required to op-erate the drifter and the diameter of eachhose:

a. Inlet Hydraulic Hose -- 3/4 in. (19 mm)diameter.

b. Return Hydraulic Hose -- 3/4 in. (19mm) diameter.

c. Forward Rotation Hydraulic Hose -- 1/2in. (12.7 mm) diameter.

d. Reverse Rotation Hydraulic Hose -- 1/2in. (12.7 mm) diameter.

e. Front End Lubrication Hose -- 3/8 in.(9.5 mm) diameter.

21.BASIC OPERATING PRINCIPLES.

The operation of the drifter is based on twoindependent basic operating principles: (a)the principle that causes thepiston to recip-rocate (i.e., hammer action) and (b) theprinciple governing the drill steel rotation.

22.DRILL PISTON RECIPROCATION.

The drifter is a valved hydraulic drill. Thevalve cylinder assembly and cylinder linerconvert hydraulic fluid pressure into effi-cient hammer action. The piston within thecylinder liner provides the impact forcewhich is transmitted to the drill steel. Thevalve alternately switches pressure fromsupply to exhaust. This action produces ahigh frequency reciprocating action of2600 cycles per minute. The piston strikesthe striking bar on each forward (power)stroke, and through the striking bar andsteel, drives the drill bit into the rock at 2600blows per minute.

23.DRILL STEEL ROTATION.

The drifter is designed with an independ-ently--controlled, hydraulic--powered, rota-tion motor that provides continuous drillsteel rotation -- forward or reverse.

The motor converts hydraulic fluid to rota-tion powerand transmits the rotationpower

, Section 4, IM6105

to a drive gearwhich is part of the spur geartrain housed in the drill fronthead. Thus, asthe drive gear is rotated, the meshingchuck gear and mating chuck driver followthe rotation. Splineswithin the chuckdrivermate with those in the striking bar, therebyimparting the rotation through the drill steelto the bit.

24. OPERATING CONTROLS.

Hammer action, drill steel rotation and feedare controlled separately andeachmust beregulated for optimum results in the drillingconditions encountered. All operating con-trols for the drifter are located on the drillingmachine console. Refer to the operationsection of the drilling machine instructionbook for detailed descriptions and instruc-tions covering all operating controls andgauges.

25. CHARGING THE DRIFTER

ACCUMULATORS.

The drifter uses nitrogen accumulators todampen vibrations in the pressure and re-turn hoses. Before operating the drifter,both accumulatorsmust be charged. Referto Section 3, Table 1 for charging require-ments!

Local codes and local supply and refill re-quirements prohibit Ingersoll--Rand sup-plying nitrogen gas cylinders.

An accumulator charging kit is furnished asa standard accessory item with the drillingmachine.

The following DANGER Precautions mustbe observed when charging the drifter ac-cumulators:

DRY NITROGEN IS THE ONLY GASPRODUCT TO BE USED TO CHARGE

THE DRILL ACCUMULATORS. NEVERUSE OXYGEN TO CHARGE THE ACCU-MULATORS. IGNITION OF AN OXYGENAND OIL MIXTURE IN THE ACCUMULA-TOR COULD PRODUCE AN EXPLO-SION, WHICH COULD SEVERELY IN-JURE PERSONNEL IN THE AREA.

MAKE SURE THE ACCUMULATORSARE IN GOOD CONDITION. MAKESURE THE ACCUMULATOR HOUSINGHAS NO CRACKS OR SIGNS OF EX-CESSIVE WEAR. A DAMAGED ACCU-MULATOR COULD RUPTURE AND SE-VERELY INJURE PERSONNEL.

To charge the drifter accumulators, pro-ceed as follows:

a. Using a spanner wrench, remove theprotective caps from the accumulator cov-ers on both accumulators.

b. Loosen the accumulator valve slightly(about 1/8 of a turn).

c. Attach the charge valve assembly tothe accumulator, turning the assemblyhand tight.

d. Connect the nitrogen bottle hose to thecharge valve assembly charging port.

e. Make sure the discharge valve on theside of the charging valve assembly isclosed. (Turning clockwise closes thevalve).

f. Turn the charge valve on top of thecharging valve assembly counter--clock-wise to open the accumulator valve. Openvalve three to four turns.

Failure to open the accumulator valve a fullthree to four turns may result in damage tothe seal when the nitrogen bottle valve isopened.

, Section 4, IM6105

\g. Slowly open (turn counter--clockwise)the valve on the nitrogen bottle and allowthe pressure to build. Close the valvewhenthe pressure reaches proper setting. If thepressure becomes higher, adjust the pres-sure by using the discharge valve on thecharging valve assembly.

h. Close the accumulator valve by turningthe charging valve on the charging valveassembly.

i. Open the discharge valve to releasegas in the charging valve assembly and thehose.

j. Remove the nitrogen bottle hose.

k. Remove the charging valve assembly.

l. Tighten the accumulator valve. Torquethe valve to 22 lb--ft (30 Nm).

m. Replace the accumulator protectivecap.

n. Follow the same procedure to chargethe second and third accumulators. Thedrifter is then ready for service.

26. CONNECTING THE STRIKING BAR

TO THE YH80A DRIFTER.

(Section 5, Figure 1)

It is very important that all threaded acces-sories be properly lubricated and cared forat all times. Proper lubrication will result inlonger part life and will simplify threadingand unthreading of all connections. Makesure that all threads are clean and free ofdirt and coatedwith a high pressure grease(Ingersoll--Rand Drill Steel Lubricant) orequivalent each time they are coupled orstored.

a. Make sure all striking bars andthreaded accessories are properlygreased.

b. Remove the two chuck end cap bolts(76) and nuts (77).

c. Remove the chuck end cap (73), capliner (74) and o--ring (75).

d. Make sure the striking bar is equippedwith a seal and the lip of that seal is facingthe striking bar splines.

e. Coat the striking bar with clean oil andinsert the shank end of the striking bar intothe chuck (72).

f. Insert the chuck end cap liner (74), o--ring (75) and chuck end cap (73) and se-cure with two chuck end cap bolts (78) andnuts (79).

27. CONNECTING THE STRIKING BAR TO

THE YH80ARP DRIFTER.

(Section 5, Figure 2)

It is very important that all threaded acces-sories be properly lubricated and cared forat all times. Proper lubrication will result inlonger part life and will simplify threadingand unthreading of all connections. Makesure that all threads are clean and free ofdirt and coatedwith a high pressure grease(Ingersoll--Rand Drill Steel Lubricant) orequivalent, each time they are coupled orstored.

a. Position the drifter with the reverse per-cussion option resting on the centralizer.

Detach the hose fittings from the reversepercussion option and plug them beforeraising the drifter up and away. This willkeep dirt out and oil from dripping while thetwo parts are separated.

, Section 4, IM6105

b. Remove the two bolts (90) and nuts(91) which retain the reverse percussion tothe drifter.

c. Raise the drifter up the guide until thereis enough room to insert the striking bar(threaded end first) into the top of the re-verse option.

d. Carefully move the drifter back downthe drill guide onto the striking bar and re-verse percussion option.

e. Install the two bolts (90) and nuts (91).

f. Re--attach the hoses to the reversehousing.

28. DRILLING PROCEDURES.

Detailed operating and drilling instructionsare covered in the operation section of thedrilling machine instruction book.

29. DRILLING TIPS.

To ensure maximum operating efficiency,the following suggestions should be ob-served.

30. SUGGESTIONS FOR DRILLERS.

a. Never pound on stuck steel. Nothing isaccomplished thereby and the drifter andbit may be permanently damaged in theprocess.

b. Never strike the drifter with tools.

c. Every effort must be made to keep dustand dirt from entering the drifter. Prevent-ing impurities from entering the drifter paysoff in improved operation and reduceddown--time for repairs.

d. Always be sure the drifter front endparts are well lubricated. Oil must be de-tected on the striking bar for proper rotationcomponent lubrication. Adjust the oil res-ervoir so that the striking bar always showsanoil film. Refer to drillingmachine instruc-

tion manual for time intervals for checkingoil reservoir. Keep the lubricator well sup-plied with oil at all times.

e. Always keep the drifter aligned with thedrill steel and hole. This assures straightand true holes that go in fast. Most impor-tantly, this prevents unnecessary wear anddamage to the drill.

f. Always use the centralizer to guide thedrill steel during the drilling operation.

31. DRILL STEEL CARE.

a. It is very important that the threads ofthe drill steel be properly lubricated andcared for at all times. Steels havingstripped threads, cracks, or severe gallingmust not be used. Also, care should betaken while drilling not to bend steel or gallthreads due to misuse.

b. Bent steel produces unnecessarystresses and accelerates wear on all fron-thead components. Bent steel and severethread galling can be avoided if the follow-ing steps are taken:

1. Be sure that the steel is bottomed inthe striking bar, couplings, and bit.

2. All threads must be in good condi-tion and well greased.

3. Always drill with a sharp bit (nomorethan 1/8 in. [3.175mm] flat on carbides).Dull bits cause excessive pounding andunnecessary stresses on all threadsand drifter fronthead parts.

4. Approach the rock at reduced feedpressure, position carefully, and collarhole. Once bit is collared in rock, fullfeed pressure may be applied.

5. Always keep sufficient feed pres-sure on steel system. Insufficient feedpressure will cause joints to loosen andthreads will be damaged.

6. Always maintain alignment be-tween the drifter and the hole.

, Section 4, IM6105

32. BIT CARE.

For long bit life, the instructions as listed inParagraph 17 covering “Drill Steel Care”must also be applied to the bit. In addition,the following steps must also be taken:

a. Never allow the bit to become pluggedwith loose cuttings. Blow the hole continu-ously.

b. Never force or broach the bit into a hole.

c. “Rattle” bits from steel using the drifterhammer actionwith light feed pressureandno rotation. Use a Stillson or bit wrench toremove the bit. Never strike the bit with ahammer.

d. Bit carbides should never be allowed toflatten any greater than 1/8 in. (3.175 mm)between regrinding intervals.

MAINTENANCE

Instruction Manual

Revision 1

May 21, 1996

IM6105

Section 5

Page 1 of 18

Alphabetical Index

Title Page No.

Description 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drifter 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hoses 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hydraulic System 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lubricant Specifications 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drill Steel Thread Lubricant 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Front End Lubricating Oil (Rock Drill Oil) 3. . . . . . . . . . . . . . . . . . . . . . . . .Hydraulic Oil 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Accumulator Disassembly 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Accumulator Reassembly 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drifter Disassembly 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Drifter Reassembly 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hydraulic Rotation Motor Disassembly 7. . . . . . . . . . . . . . . . . . . . . . . . . . .Hydraulic Rotation Motor Reassembly 13. . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection of Accumulator Pressures 18. . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection of Parts 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reverse Percussion Disassembly 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reverse Percussion Reassembly 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33.INTRODUCTION.

This section provides information on drifterdisassembly, inspection of parts, assem-bly instructions and lubricant specificationsof the Hydraulic Drifter Model YH80A(hereafter referred to as drifter).

34.DESCRIPTION.

The drifter must be included in a definitepreventive maintenance schedule to as-sure top performance and long, efficientservice life. The operating performance isdirectly dependent upon the condition inwhich the working parts and interactingsystems are maintained. The following ar-eas must be included in a preventivemain-

tenance “check--list” to assure reliable andconsistent drifter operation.

35.HYDRAULIC SYSTEM.

Clean hydraulic oil is the life--blood of thedrifter. Without an adequate supply ofclean oil of proper weight at the correctpressure and temperature, the drill cannotoperate properly.

e. Make sure the hydraulic oil is kept freeof dirt. Check that all filters are properly in-stalled and serviced regularly.

f. Hydraulic oil should conform to thespecifications as outlined in the drillingma-chines instruction manual.

g. Maintain the correct level of hydraulicfluid in the hydraulic oil reservoir to preventoverheating and foaming.

, Section 5, IM6105

h. Make sure the systemheat exchangersor radiator type oil coolers are kept free ofdirt.

36.HOSES.

a. Never allow the hydraulic systemhosesto remain uncapped or exposed at anytime. Always cap hoses and fittings imme-diately when disconnecting any part of thehydraulic system.

b. Make sure all hoses are clean beforeconnecting them to any part of the hydrau-lic system.

c. Make sure all hoses are clean beforeconnecting them to the drifter.

d. Always use the proper size hoses.

e. Make sure all hose connections aretight and all hoses, fittings, and adaptersare in top--notch condition.

A LOOSE HOSE CONNECTION NOTONLY CAUSES LEAKS, BUT THE HOSEMAY COME COMPLETELY OFF THETOOL, WHIP AROUND AND CAUSE IN-JURY TO THE OPERATOR.

37.DRIFTER.

a. Never allow the hose adapters on thedrifter to remain uncapped. Dirt contami-nation of the drifter will cause acceleratedwear and drifter failure.

b. Be certain that the striking end of thestriking bar is square, flat and free of allsharp edges. The striking bar should be re-paired or discarded if cracked, peened, orcrowned.

c. Be sure that the hole in the drill steel isopen.

d. Excessively dull bits cause slow drillingand excessive pounding within the drifter.Always change the bit when there is an ap-preciable drop off in drilling speed, or anynoticeable change in the action of the drift-er.

e. Be certain that the drifter front end partsare well lubricated. Oil must be detectedon the striking bar for proper rotation com-ponent lubrication. The amount of lubricat-ing oil provided is controlled by air and oilregulators located at the drilling controlconsole on the drilling machine. Adjust theoil flow so that the striking bar alwaysshows an oil film. Refer to drilling machineinstruction manual for time intervals forchecking oil reservoir. Keep the lubricatorwell supplied with oil at all times. Keep thelubricating oil free of dirt.

f. Schedule regular periods for checkingfront end lubrication. Do not wait for physi-cal evidence of poor lubrication.

g. The drifter fronthead should be takenapart periodically, cleaned, and parts in-spected for wear and distortion.

h. Hydraulic seals and o--rings wear dur-ing normal operation. Hydraulic oil leakagemay be an indication that seals or o--ringsneed to be replaced.

i. If a drifter is not operating properly, in-vestigate the problem as described in Sec-tion 6 covering “Troubleshooting”.

38.LUBRICANT SPECIFICATIONS.

The following paragraphs outline the lubri-cants required for the drifter.

39.HYDRAULIC OIL.

Refer to the instruction manual for the drill-ingmachine for the specifications of the hy-draulic oil.

, Section 5, IM6105

40.FRONT END LUBRICATING OIL.

(Rock Drill Oil)

KEEP THE ROCK DRILL LUBRICANTCLEAN AND FREE FROM ALL FOREIGNMATTER TO PREVENT DAMAGE TOTHE INTERNAL PARTS.

Ingersoll--Rand offers a complete line ofrock drill oil formulated to provide maxi-mum performance in all types of rock drillequipment. These oils exceed the oilspecifications listed in Table 1.

The rock drill oil used in the air line lubrica-tor must be a well refined petroleum lubri-cating oil. It must be suitably compoundedto provide the specified consistency andfilm strength, and be further compoundedto provide the specified steam emulsionnumber, which is required to provide satis-factory lubricant. Though the compositionof the “film strength” additive is not speci-fied, it must be non--corrosive to both steeland bronze, and contain little or no sulphur.

Ingersoll--Rand Rock Drill Oils are formu-lated to provide maximum performance inall types of rock drill equipment. Use Table2 for selecting the correct viscosity grade tomeet your requirements and Table 3 for se-lecting the correct rock drill oil part number.

Viscosity:SUS at 100°F (38°C)SUS at 210°F (99°C)cST at 104°F (40°C)cST at 212°F (100°C)

Pour Point, °F (°C) max.

Flash Point,°F (°C) min.

Viscosity Index, min.Steam Emulsion No. min.ConsistencyFalex Load Test lbs (kg) [min]

Timken E.P. Test lbs (kg) [min]

ASTM--D2161ASTM--D2161ASTM--D445ASTM--D445ASTM--D97

ASTM--D92

ASTM--D2270ASTM--1935--65. . . . . . . . . . . .ASTM--D2670

ASTM--D2782

175 min.46 min.37 min.6 min.--10°F(--23°C)370°F(188°C)901200Stringy2000 lbs(907 kg)30 lbs(14 kg)

750 min.85 min.160 min.16 min.0°F

(--18°C)450°F(232°C)901200Stringy2000 lbs(907 kg)30 lbs(14 kg)

450 min.65 min.105 min.11 min.--10°F(--23°C)400°F(204°C)901200Stringy2000 lbs(907 kg)30 lbs(14 kg)

Table 1. Rock Drill Oil Specifications

Characteristic TestProcedure

Below 20°F(--7°C)

20°F to 90°F(--7°C to 32°C)

Above 90°F(32°C)

Table 2. Selection Chart

Below 20°F(--7°C)

20°F to 90°F(--7°C to 32°C)

Above 90°F(32°C)

Typical OperatingConditions

100--150 psi (7.03 -- 10.5 kg/cm2) Light Medium Heavy

, Section 5, IM6105

1 Gallon 5 Gallon 55 GallonGrade

Light 51378701 51378727 51378743

Medium 51378693 51378719 51378735

Heavy 51378784 51378792 51378800

Table 3. Ingersoll--Rand Rock Drill Oil Part Numbers

41.DRILL STEEL THREAD LUBRICANT.

It is very important that the threads of allstriking bars, drill rods, couplings and bitsbe properly lubricated and cared for at alltimes. Proper lubrication will result inlonger life and will simplify threading andunthreading drill rod joints.

Use a good molybdenum di--sulphide typethread grease such as (Ingersoll--RandDrill Steel Lubricant) or equivalent. (Referto PL6105 “Parts List For Hydraulic DrifterModels YH80A”, for part numbers.)

42. MAINTENANCE.

To ensure maximum life and top perform-ance of the equipment, it is necessary thatthe maintenance be done before seriousdamage occurs. It is important to be cau-tious when performing any service work. Ageneral knowledge of the system and/orcomponents is important before the re-moval or disassembly of any components.The following is a list of basic precautionsthat must always be observed:

a. Never attempt major work on the drifterin the field. The drifter may be in worsecondition after major maintenance wastried in the field than before. Send the drift-er to the shop.

b. Clean the exterior of the drifter beforetearing it down.

c. Use a soft metal, plastic, or wood ham-mer for driving the heavier exterior parts.

d. Handle parts carefully. Hardened partsmight chip or break if dropped on a hardsurface.

e. Clean disassembled parts in a solvent.Probe ports in the backhead, housing,housing liner, drive gear cover, etc. toloosen and remove foreign matter. Placethe small parts in a clean container so theywill not become lost.

WHEN USING ANY SOLVENT TOCLEAN PARTS, MAKE SURE THAT ITMEETS CURRENT SAFETY ANDHEALTH STANDARDS AND THAT IT ISUSED IN AN AREA THAT IS ADE-QUATELY VENTILATED.

43. DRIFTER DISASSEMBLY. (Figure 1)

a. Place the drill guide in a horizontal posi-tion.

b. Feed the drifter down the guide until it isin the most accessible position.

c. Disconnect, plug, and tag the blower airhose, front end lubrication hose, supplyand return hydraulic hoses, and forwardand reverse rotation hydraulic hoses.

, Section 5, IM6105

See 11 x 17

, Section 5, IM6105

d. Install caps on the hose fittings to pre-vent dirt from entering the drifter.

e. Remove the nuts and bolts which se-cure the drifter to the mounting plate, anduse a suitable hoist to lift the drifter off themounting plate.

f. Take the drifter to a clean work area todisassemble it.

THE DRIFTER MUST BE PLACED IN AHORIZONTAL POSITION AND FIXED BYBOLTS ON A WORK BENCH FOR DIS-ASSEMBLY. A DRIFTER POSITIONEDVERTICALLY COULD FALL ANDCAUSE A SEVERE CRUSHING INJURYTO PERSONNEL.

WHEN USING ANY SOLVENT TOCLEAN PARTS, MAKE SURE THAT ITMEETS CURRENT SAFETY ANDHEALTH STANDARDS AND THAT IT ISUSED IN AN AREA THAT IS ADEQUATE-LY VENTILATED.

g. Loosen and remove the two chuck endbolts (76) and nuts (77).

h. Loosen the four through bolt nuts (79).

i. Loosen the twelve bolts (46) which at-tach the accumulator assemblies to the cyl-inder (21).

j. Loosen the backhead gland (13) withan open end wrench. Pull out the back-head gland (13) and blow tube (18) in onepiece.

BE EXTREMELY CAREFUL WHEN RE-MOVING THE CHUCK ENDCAP, CHUCKAND STRIKING BAR. THESE PARTSMAY FALL APART AND CAUSE INJURYTO PERSONNEL.

k. Remove the chuck end cap (73), chuck(72) and striking bar at the same time, be-ing careful not to drop any of the parts.

l. Unscrew and remove the four throughbolt nuts (79) and pull the four throughbolts(78) out of the drifter.

m. Using a plastic hammer, drive off thechuck end (69).

n. Pull the chuck driver (67) out of the gearbox (54).

o. Unscrew the four capscrews (53) whichhold the hydraulic motor (47) to the gearbox (54).

p. Pull the hydraulic motor (47) out of thegear box (54).

q. Unscrew the four bolts (66) and removethe cover (64) and o--ring (65).

r. Use two wooden blocks to support thecylinder (21) so that the backhead (1) canbe removed with a plastic hammer.

s. From the chuck end of the drifter, strikethe front surface of the piston (35) with ahammer and plastic drift. Drive the piston(35), valve (34), valve guide (33) and cylin-der back liner (29) out of the cylinder (21)until they can be pulled the rest of the wayout by hand.

t. Using both hands, pull the piston (35),valve (34), valve guide (33) and cylinderback liner (29) the rest of the way out of thecylinder.

u. Using one of the cover bolts (66) to in-sert into the gear shaft (62), pull the gearshaft (62) out of the gear box (54). Supportthe idler gear (60) with the other hand sothat it will not drop when the gear shaft ispulled out.

v. Separate the gear box (54) from the cyl-inder (21) with a plastic hammer.

, Section 5, IM6105

w. Set the gear box (54) on its chuck side.From the backhead side of the gear box,use a hammer and suitable steel bar todrive the drive gear (58) and bearings (59)from the gear box.

x. With the gear box (54) on a suitable fix-ture (cylinder side down), use a hammerand appropriate drift to drive the front liner(36) out of the gear box.

y. With the gear box (54) on a suitableworkbench (cylinder side up), use a ham-mer and appropriate drift to drive the bush-ing (55) out of the gear box.

z. Unscrew the twelve bolts (46) whichhold the three accumulators to the cylinderand remove the accumulators from the cyl-inder. Refer to Paragraph 12 for accumula-tor disassembly.

aa. Remove the two seals (28) from thecylinder liner (27), seals (31, 32) from theback liner and seal wiper ring (38) from thefront liner.

Do not remove the cylinder liner unless ser-vice is required on the liner.

ab. If it is necessary to remove the cylinderliner (27), insert an appropriately sized toolinto the cylinder (21) and drive the cylinderliner out with a large hammer or press.

Do not remove any of the bushings unlessthey require servicing.

ac. Place the chuck end (69) on an appro-priate fixture so that the bushing (70) can

be driven out from the chuck side of thechuck end.

ad.Remove the chuck bushing (70) andcap liner (74) if necessary.

ae. If necessary, remove the needle bear-ings (61) from the drive gear (58).

af. Use a large press to remove the cap lin-er (74).

44. ACCUMULATOR DISASSEMBLY.

(Figure 3)

BE SURE TO BLEED THE ACCUMULA-TORS BEFORE ANY ACCUMULATORDISASSEMBLY IS ATTEMPTED.

a. Put the accumulator in a vise and with aspanner wrench remove the cap (44) fromthe accumulator cover (40).

b. Loosen the accumulator valve (42)slightly to bleed the gas from theaccumula-tor.

c. Unscrew the cover (40) from the accu-mulator body (39).

d. Remove the diaphragm (41) from theaccumulator body (39).

45. HYDRAULIC ROTATION MOTOR

DISASSEMBLY. (Figure 2)

Clean the exterior of the motor. Cleanli-ness is extremely important when repairingthe hydraulic rotation motor. Work in aclean area.

a. Drain the oil from inside the motor.

, Section 5, IM6105

28. Bearing Housing

2. Shaft/Bearing Kit

3. Wear Plate

4. Drive

5. Geroler

6. Valve Drive

7. Valve Plate

8. Valve

9. Balance Plate

10. Spring

11. Pin

12. Valve Housing

13. Boss Plug

14. Steel Ball

15. Boss Plate

16. Bolt

17. Dust Seal

18. O--Ring

19. Oil Seal

20. Shaft Face Seal

21. O--Ring

22. O--Ring

23. O--Ring

24. Outer Face Seal

25. Inner Face Seal

26. O--Ring

27. O--Ring

Figure 2. Hydraulic Rotation Motor -- Exploded Illustration

, Section 5, IM6105

CLAMP ACROSS THE MOUNTINGFLANGE AREA OF THE BEARINGHOUSING. EXCESSIVE CLAMPINGPRESSURE WILL CAUSE DISTORTION.WHENCLAMPING, USESOMETYPEOFPROTECTIVE DEVICE ON THE VISE,SUCH AS SPECIAL SOFT JAWS ORPIECES OF HARD RUBBEROR BOARD.

b. Place themotor in a vise with the outputshaft down.

c. Unscrew the four bolts (16) and lift thevalve housing (12) straight up.

If done carefully, the pins, springs, balanceplate and valve will remain on the valveplate.

d. Carefully remove the o--ring (22) fromthe valve housing (12).

e. Remove the two pins (11) and springs(10) from the balance plate (9).

f. Remove the balance plate (9), valve(8), and inner and outer face seals (24, 25).

g. Lift the valve plate (7) away from thegeroler (5).

h. Carefully remove the o--ring (23) fromthe valve plate (7).

i. Lift the valve drive (6) out of the geroler(5).

j. Remove the geroler (5). Be sure to re-tain the rollers in the outer ring if they areloose.

k. Pull the drive (4) away from the wearplate (3).

l. Carefully remove the o--ring (21) fromthe wear plate (3).

m. Lift the wear plate (3) away from thebearing housing (1).

n. Remove the shaft face seal (20)from the wear plate (3).

o. Remove the o--ring (18) from thebearing housing (1).

Youmay need a press to remove the shaft/bearing kit from the bearing housing.

p. Remove the shaft/bearing kit (2) fromthe bearing housing (1).

BE CAREFUL NOT TO DAMAGE THEBORE OF THE BEARING HOUSING.

q. Use a small screwdriver to remove theshaft oil seal (19) and dust seal (17) fromthe bearing housing (1).

46. REVERSE PERCUSSION KIT

DISASSEMBLY. (Figure 3)

The following disassembly instructions arefor usewhen the drifter is furnishedwith thereverse percussion option.

a. Loosen the two nuts (91)with awrench.

BE SURE TO BLEED THE ACCUMULA-TORS BEFORE ANY ACCUMULATORDISASSEMBLY IS ATTEMPTED.

b. Loosen the eight bolts (111) which re-tain the two accumulators (103) to the re-verse housing (87).

c. Remove the nuts (91), bolts (90), re-verse housing (87) and striking bar.

, Section 5, IM6105

96.WearRing

85.DUBushing

86.Chuck

87.ReverseHousing

88.Liner

89.O--Ring

90.Bolt

91.NylonNut

94.Back-UpRing

95.Seal

97.TopCylinder

98.O--Ring

100.WearRing

103.AccumulatorBody

104.AccumulatorCover

105.Diaphragm

106.Valve

107.SealWasher

108.Cap

109.O--Ring

110.BackUpRing

111.Bolt

83.ChuckEnd

84.O--Ring

92.BottomCylinder

99.Seal

101.Piston

Fig

ure

3.

Re

ve

rse

Pe

rcu

ss

ion

Kit

93.O--Ring

, Section 5, IM6105

d. Unscrew the eight bolts (111) which re-tain the accumulators and remove the ac-cumulators (103).

e. Clamp the accumulators in a vise andremove the cap (108) from theaccumulatorcover (104).

f. Loosen the valve (106) with a suitablewrench to bleed gas from the accumulator.

g. Unscrew the cover (104) from the accu-mulator body (103) with a suitable wrench.

h. Remove the diaphragm (105) from theaccumulator body (103).

i. Using a hammer and soft drift, strike theedge on the inside of the reverse piston lin-er (88) to remove the reverse piston (101).

j. Remove thewear ring (96) from the bot-tom cylinder (92) and wear ring (100) fromthe top cylinder (97).

k. Remove the two seals (95) from thebottom cylinder (92) and seal (99) from thetop cylinder (97).

l. Strike the edge on the inside of the bot-tomcylinder (92) with a suitable steel bar toremove it from the reverse housing (87).

m. Place the reverse housing (87) on asuitable steel sleeve so that the housingliner (88) and the top cylinder (97) can bedriven out.

47. INSPECTION OF PARTS.

The operating performance of the drifterdepends on the condition in which theworking parts are maintained. When it isnecessary to disassemble the drifter for re-pairs, all parts should be inspected forwearand damage and replacement parts in-stalled when necessary.

a. Hydraulic Rotation Motor (47).

1. Clean all metal parts in clean sol-vent and blow dry with air. Do not wipe drywith a cloth or paper towel because lint or

other matter can get into the motor andcause damage.

2. Check all mating surfaces. Replaceany parts that have scratches or burrs thatcould cause leakage. Do not use a coarsegrit or try to file or grind these parts.

3. Check around the chamfered areaof the shaft for burrs, nicks, or sharp edgesthat damage seals when reassembling.

b. Cylinder (21).

Inspect cylinder bore for scratches,gouges and galling; repair any of these ir-regularities.

c. Backhead (1).

Inspect the front face (the face that butts upto the cylinder) for scratches and gouges;repair any irregularities.

d. Cylinder Liner (27), Front Liner (36),Cylinder Back Liner (29).

Inspect the inside diameters of the linersfor galling, and seizure marks; repair anyirregularities. Replace the liners if neces-sary.

e. Piston (35).

1. Inspect the striking face of the piston tosee if it is chipped. A piston with a chippedstriking face must be replaced.

2. Inspect the outside diameter and insidediameter of the piston for galling. Any gall-ing requires replacement of the piston.

f. Gear Box (54).

Inspect the gear box faces for scratchesand gouges; repair if necessary.

g. Gear Box Bushing (55).

Inspect the gear box bushing forpitted,scraped, or worn surfaces and re-place the bushing if necessary.

h. Drive Gear (58).

Inspect the front and rear faces of the drivegear for scraping and wear; inspect thedrive gear teeth for galling, distortion, orbending; inspect the condition of the spline

, Section 5, IM6105

in the drive gear bore. Replace the drivegear if necessary.

i. Idler Gear (60).

Inspect the front and rear faces of the idlergear for scraping and wear; inspect theidler gear teeth for galling, distortion, orbending; inspect the condition of the idlergear bore. Replace the idler gear if neces-sary.

j. Chuck Driver (67).

Inspect the front and rear faces fo thechuck driver for scraping and wear; inspectthe pawl end of the chuck driver for distor-tion of the pawl. Replace the chuck driver ifnecessary.

k. Chuck (72).

Inspect the pawl end for distortion andwear; inspect the condition of the spline inthe inside bore. Replace the chuck if nec-essary.

l. Drive Gear Bearings (59).

Inspect the drive gear bearings in the gearbox. If the bearings are worn or damaged,use suitable pullers to remove them, thenpress in new bearings.

m. Idler Gear Bearings (61).

Inspect the idler gear needle bearings inthe idler gear. If the bearings are worn ordamaged, use a suitable fixture to pressout the bearings, then press in new bear-ings.

n. Chuck End Bushing (70).

Inspect the chuck end bushing for pitted,scraped, or worn surfaces and replace thebushing if necessary.

o. Striking Bar.

1. The striking face of the striking barmustbe square, flat, and free fo all sharp edges.The striking bar must be discarded ifcracked, peened, or crowned.

2. The tapered seating face of the strikingbar must be free of cracks and sharpedges. If the face is peened to 1/16 in.(1.59mm) deep or greater, the striking barmust be discarded.

p. O--Rings and Seals.

Inspect all seals and o--rings for nicks, cuts,tears and deformation and replace as nec-essary. Hydraulic seals and o--rings wearduring normal operation. Hydraulic oilleakage may be an indication that seals oro--rings need to be replaced.

q. Bolts, Capscrews and Nuts.

Inspect the threads of all bolts, capscrewsand nuts; repair as necessary.

48. ACCUMULATOR REASSEMBLY.

a. Clamp the accumulator body (103) intoa vise.

b. Lightly lubricate each diaphragm (105)and insert them in their cavities in the accu-mulator body (103).

Be sure the lip on the outside edge of thediaphragm is properly seated in the groovein the accumulator body.

c. Install the accumulator covers (104) us-ing a suitablewrench. Torque the covers to253 lb--ft (343 Nm).

d. Install the sealwashers (107) on the ac-cumulator valves (106). Install the accu-mulator valves on the accumulator covers(104).

e. Refer to Section 4, Paragraph 11“Charging The Drifter Accumulators” foraccumulator charging instructions.

, Section 5, IM6105

49. HYDRAULIC ROTATION MOTOR

REASSEMBLY. (Figure 2)

KEEP DIRT AND OTHER FOREIGN MA-TERIAL OUT OF THE DRIFTER. DIRT INTHE DRIFTER WILL RESULT IN DAM-AGE TO THE PISTON AND OTHER IN-TERNAL COMPONENTS.

Figure 4. Shaft Face Seal, Shaft Sealand Dust Seal Installation

Lubricate all seals (prior to installation)withpetroleum jelly. Always use new sealswhen reassembling the motor. Refer toPL6105, “Parts List For Hydraulic DrifterModelsYH80A”, for part numberof the sealkit.

1. Reassemble in reverse order of disas-sembly, unless otherwise noted. Refer toParagraph 13.

2. Alignment studs are extremely helpfulwhen reassembling the motor. They can

be shop made to the specifications shownin Figure 5.

Figure 5. Alignment Studs

Reassembly involves three steps in thetiming of the rotation motor (Refer to Tim-ing Steps 1, 2, & 3). Timing determinesthe direction of rotation of the motor outputshaft, and thus, the rotation direction of thedrill steel and bit. Timing parts include theGeroler (5), valve drive (6), valve plate(7), and valve (8).

3. Timing Step # 1: Locate the largestopen pocket in the Geroler (5) and mark iton the outside edge of the geroler, proceedas follows:

a. Install the valve drive (6) in the Gerol-er (5).

b. Install the seal (23) in the groove inthe valve plate (7).

c. Align the case drain holes in the Ger-oler (5) and valve plate (7), and installthe valve plate (seal side toward the ger-oler) against the Geroler.

4. Timing Step # 2: Locate the slot open-ing in the valve platewhich is in linewith thelargest open pocket of the Geroler (5) .

5. Timing Step # 3: Locate any one of theside openings that goes through to the bot-tom face of the valve (8). Line up this sideopening with the open slot of the valveplate (7) that is in line with the largest openpocket of theGeroler (5). Rotate the valve(8) clockwise until the spline teeth engage.

, Section 5, IM6105

INSTALLTHEFACESEALS INTHEPOSI-TION SHOWN IN FIGURE 6 OR THEMO-TOR WILL NOT OPERATE PROPERLY.DO NOT FORCE OR BEND THE FACESEALS. ANY DAMAGE TO THESESEALS WILL ADVERSELY AFFECT THEOPERATION OF THE MOTOR. MAKESURE THE SEALS ARE FIRMLYSEATED.

Figure 6. Inner and Outer Face SealInstallation.

50. REVERSE PERCUSSION KIT

REASSEMBLY. (Figure 3)

Lubricate all seals (prior to installation)withpetroleum jelly. Always use new sealswhen reassembling.

Refer to Figure 3 for the correct facing di-rection of the lip when installing the seals.

a. Place oil on the housing liner (88), in-sert the liner into the reverse housing (87)and with a suitable fixture, drive or pressthe liner into the housing.

b. Assembly Procedure for CylinderSeals:

1. Collapse seal as shown in Figure 8.Push sides in as shown, then slide intobore and position seal in groove.

Figure 7. Seal Free Form

Figure 8. Seal Collapsed Form

Figure 9. Bump

BUMP

2. Using a tool with rounded edges, firmlywork the seal into its groove until the“bump” has disappeared and the sealsticks out of the groove the same amountall the way around.

Failure to remove the “bump” may causedamage to the piston on start--up.

c. Install the new seal (99) and wear ring(100) into the top cylinder (97) and an o--ring (98) on the O.D. of the top cylinder.Refer to Figure 3 for the correct positioningof the seal lip.

, Section 5, IM6105

d. Apply oil to both outside and inside ofthe top cylinder (97) and insert the top cyl-inder into the reverse housing (87). Use apress or drive the top cylinder into the re-verse housing with a suitable fixture.

e. Install the two seals (95) and wear ring(96) into the bottom cylinder (92). Refer toFigure 3 for the correct positioning of theseal lips.

f. Apply a coat of oil to both the outsideand inside of the bottom cylinder (92). In-stall the bottom cylinder into the reversehousing using a press or driver.

Care should be taken when pressing thepiston into the bottom cylinder so as not todamage the seals in the cylinder.

g. Apply a coat of oil to both the outsideand inside of the reverse piston (101). In-stall the reverse piston in the bottom cylin-der (92) using a suitable bushing to drivethe piston in.

h. Clamp the accumulator body (103) in avise. Install the diaphragm (105) on the ac-cumulator cover (104) and grease them.

i. Place the assembled cover and dia-phragm on the accumulator body (103).

j. Fix the accumulator cover wrench(supplied with drifter) on the cover with thethumb screw. Screw the accumulator cov-er (104) into the accumulator body (103).Torque the cover to 253 lb--ft (343 Nm).

k. Grease the seal washer (107) and in-stall the washer and valve (106) in the ac-cumulator cover (103).

l. Screw the valve (106) into the accumu-lator cover (103).

m. Refer to Section 4, Paragraph 11,“Charging The Drifter Accumulators”, forinstructions on charging the accumulators.

n. Install the o--ring (109) and back--upring (110) on the accumulator body (103).

o. Attach the accumulator assembly to thereverse housing (87) with the four bolts(111). Torque the bolts to 115 lb--ft (156Nm).

51. DRIFTER REASSEMBLY.

(Figure 1)

KEEP DIRT AND OTHER FOREIGNMATERIALOUTOFTHEDRIFTER. DIRTIN THE DRIFTER WILL RESULT INDAMAGE TO THE PISTON AND OTHERINTERNAL COMPONENTS.

a. Except for press--fit components, partsshould fit together easily. If unusual force isrequired, a part is out of alignment andmust be corrected to prevent binding anddamage.

b. For proper drifter assembly, it is impor-tant that nuts and bolts be tightened to thecorrect torque valves. Table 4 lists thetorque values of the bolts and nuts used onthe drifter with lubricated threads.

Lubricate all seals (prior to installation)withpetroleum jelly. Always use new sealswhen reassembling. Lubricate all partswith the hydraulic oil recommended in thecrawler machine instruction manual whenreassembling parts.

, Section 5, IM6105

137 Nm

491 Nm

244 Nm

137 Nm

488 Nm

343 Nm

30 Nm

156 Nm

101 lb--ft

362 lb--ft

180 lb--ft

101 lb--ft

360 lb--ft

253 lb--ft

22 lb--ft

115 lb--ft

Illustration NAME OF PARTTORQUE

English MetricNo.

Table 4. Torque Values (Lubricated)

66, Fig. 1

76, Fig. 1

46, Fig. 1

53, Fig. 1

79, Fig. 1

40, Fig. 1 &

104, Fig. 3

42 Fig. 1 &

106, Fig. 3

111, Fig. 3

Cover Assembly Bolt (4) . . . .

Bolt (2) . . . . . . . . . . . . . . . . . . . .

Accumulator Assembly Bolt (12) .

Rotation Motor Capscrew (2) . . .

Through Bolt Nut (4) . . . . . . . .

Accumulator Cover (3) . . . . .

Accumulator Valve (3) . . . . . .

Accumualtor Assembly Bolt (8)

(Reverse Percussion) . . . . . .

c. If removed, install the cap liner (74) intothe chuck end cap (73).

d. If removed, install the bushing set (68)into the chuck driver (67).

e. If removed, install the gear box bushing(55) in the gear box (54).

f. Install a new o--ring (37) and wiper ring(38) on the front liner (36) and press thefront liner back into the gear box (54), if thefront liner was removed.

g. If the chuck end bushing (70) was re-moved from the chuck end (69), press thebushing in.

h. Press a new spring pin (56) into thegear box (54) and install a new o--ring (57)around the pin.

i. If the drive gear bearings (59) weredamaged, press new bearings on the drivegear (58).

j. Grease the drive gear assembly and in-stall it in the gear box (54).

k. Install an o--ring (63) on the gear shaft(62).

l. Press two new needle bearings (61)into the idler gear (60), if required, andgrease the bearings.

m. Align the idler gear (60) in the gear box(54); insert the idler gear shaft (62) thru thehole in the gear box and thru the idler gear.

n. Install a new o--ring (65) on the cover(64) and attach to the gear box (54) withfour bolts (66). Torque the bolts to 101 lb--ft(137 Nm).

o. Install a new o--ring (22) in the cylinder(21)

, Section 5, IM6105

SPECIAL CARE IS REQUIRED WHENINSTALLING PISTON SEALS TO AVOIDDAMAGE TO THE PISTON WHEN THEDRIFTER IS STARTED.MAKE SURE THE LIP OF THE INNERSEAL FACES TO THE INSIDE OF THEHYDRAULIC OIL CHAMBER.

p. Assembly Procedure For PistonSeals.

1. Install each o--ring attached to theoutside of the seals (28); into the groovesof the cylinder liner (27); then install the in-ner seal (refer to Paragraph 17, Step b).Make sure the lip of the inner seal faces tothe inside of the hydraulic oil chamber.

q. Apply oil to the outside of the cylinderliner (27); use a press to insert the cylinderliner into the cylinder (21).

r. Rest the cylinder (21) horizontally ontwo wooden blocks so that the gear box(54) pilot diameter can be driven into thecylinder.

After changing the piston seals, a strongerforce will be required to install the piston.

s. Apply oil to the piston (35); carefullyslide the piston into the cylinder (21). Afterthe piston makes contact with the pistonseals in the cylinder and a stronger force isnoticed, a hammer and plastic drift may berequired to drive the piston in the rest of theway.

t. Install the seals (31, 32) in the cylinderback liner (29); refer to Step b for installa-tion instructions.

u. Install the o--ring (30) in the groove onthe outside diameter of the cylinder backliner (29).

v. Install the valve guide (33) into the backliner (29) using a plastic hammer.

w. Insert the valve (34) in the valve guide(33).

x. Apply oil to the back liner assembly andinstall the assembly into the cylinder (21);drive the assembly in with a hammer andplastic drift.

y. Install o--rings (26) in the two throughbolt holes in the cylinder (21).

z. Install the blow tube supporter (2) ando--rings (5, 6) in the backhead (1).

aa. Install the backhead (1) in the cylinder(21). Strike the backhead lightly with aplastic hammer.

ab. Apply oil and grease on the chuckdriver (67) and install the chuck driver in thegear box (54).

ac. Install the o--ring (71) on the chuckend (69) and insert the pilot diameter of thechuck end into the gear box (54).

ad. Place an o--ring (51) on the gear box(54) and install the hydraulicmotor (47). In-stall the four capscrews (53) and torque thecapscrews to 101 lb--ft (137 Nm).

THE DRIFTER MUST BE RETAINED BYBOLTS TO A WORK BENCH BEFORETHE THROUGH BOLTS ARE TORQUED.

ae.Install the four through bolts (78). In-stall the o--rings (80) on the bolts, greasethe threads and install the nuts (79). Makesure the drifter is fixed by bolts to a workbench before torquing the nuts. Torque thenuts (79) to 360 lb--ft (488 Nm).

af. Install the chuck (72), striking bar, capo--ring (75) and chuck end cap (73). Installthe two bolts (76) and torque to 362 lb--ft(491 Nm).

ag. Install the backhead gland (13) on theblow tube (18); insert them into the back-head (1).

, Section 5, IM6105

ah.Install the three accumulator assem-blies to the cylinder. Install the twelve boltsand torque to 180 lb--ft (244 Nm).

52. INSPECTION OF ACCUMULATOR

PRESSURES.

THE DRIFTER ACCUMULATORS MUSTBE CHECKED EVERY 250 HOURS OFOPERATION TO MAKE SURE THEPRESSURES ARE CORRECT. REFERTOSECTION3, TABLE 1, FORTHECOR-RECT ACCUMULATOR PRESSURESAND BELOW FOR THE PROCEDUREFOR CHECKING THESE PRESSURES.

Using the furnished accumulator chargingkit, check the accumulator pressures asfollows:

a. Using the spanner wrench (furnishedwith the drifter), remove the protective capsfrom the accumulator covers on both accu-mulators.

b. Loosen the accumulator valve slightly(about an 1/8 of a turn).

c. Attach the accumulator valve assemblyto the accumulator, turning the assemblyhand tight.

d. Check the pressure gauge on the accu-mulator charging assembly.

e. If the accumulator pressure are incor-rect, refer to Section 4, Paragraph 11,“CHARGINGTHEDRIFTERACCUMULA-TORS”.

, Section 5, IM6105

Figure 1. Hydraulic Drifter YH80A – Sectional Illustration

23

TROUBLESHOOTING

Instruction Manual

July 24, 1995

IM6105

Section 6

Page 1 of 3

Alphabetical Index

Title Page No.

Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Troubleshooting 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

53.INTRODUCTION.

This section contains detailed information

for troubleshooting the Hydraulic Drifter Mod-

els YH80A (hereafter referred to as drifter).

54.TROUBLESHOOTING.

Troubleshooting will be accomplished byusing the table provided in this section. Table 1will provide a step by step question and reme-dy. Using both of these together will solvemost common problems.

TROUBLE PROBABLE CAUSE REMEDY

Table 1. Troubleshooting

Drifter will not start. 1. Cold hydraulic oil orwrong hydraulic oil.

2. Drifter valve stuck.

1. Never use hydraulic oil that does notconform to the specifications out-lined inSection 5, Table 1. If ambienttemperature is below 32°F (0°C),drill may be reluctant to start, but itwill start if control valve is left in theon position for a few minutes.

2. Check valve for scoring, burrs, ormechanical interference. Repair orreplace.

Drifter lacks power(hydraulic supplypressure normallyabove 1991 psi[140 kg/cm2]).

1. Low hydraulic oil flow.

2. Leaking seals or o--rings.

3. Piston not hitting strikingbar at full blow.

1. Increase flow setting.

2. Check for tightness of hardware. Ifnecessary, visually inspect seals.

3. Check for excessively worn strikingbar splines or striking bar seat andreplace if necessary. Replace strik-ing bar if shank end is excessivelyworn.

Through boltbreakage.

1. Uneven tension on nutsor loose nuts.

1. Nuts must be tight and under equaltension. Tighten the nuts graduallyand alternately. Refer to Section 5,Table 4.

, Section 6, IM6105


Table 1. Troubleshooting (cont.)

No steel rotationor rotation isweak.

1. Steel binding in hole.

2. Worn or leaking rotationmo-tor.

3. Incorrectly assembledchuck/drive gear compo-nents or excessively worncomponents.

4. One through bolt brokencausing chuck end binding.

1. Sharpen or replaceworn bits. Ap-ply correct amount of down--pres-sure and keep drill, steel and holein alignment.

2. Repair or replace motor.

3. Check for proper assembly of thechuck/drive gear componentsand for excessively worn compo-nents.

4. Replace broken through bolt. Re-fer toSection 5, Table 4 for torque.

Slow drilling speed. 1. Dull bit.

2. Cuttings not being removedfrom hole.

3. Plugged drill steel.

4. Drifter and steel not alignedwith hole; steel or bit bindingin hole.

5. Worn fronthead compo-nents.

6. Incorrect feed pressure.

7. Accumulators not properlycharged.

1. Replace bit.

2. Increase blow air or water to keepbit working on fresh rock.

3. Remove drill steel, clean out pas-sages.

4. Check alignment while drilling toprevent binding and to avoidstuck steel.

5. Check chuck end componentsand replace if necessary.

6. Adjust feed pressure.

7. Bleed and rechargeaccumulators.

Stuck steel. 1. Driving steel after bit is dullor has lost its gauge.

2. Crowding bit in soft forma-tions.

3. Cuttings not being blownfrom hole.

4. Misalignment of steel withhole causing binding.

1. Don’t force a dull bit, sharpen orreplace with new bit.

2. Use down--pressure cautiously insoft formations; be certain steel isrotating freely.

3. Use blow air continuously.

4. Keep drill steel, and hole in align-ment at all times.

, Section 6, IM6105

Page 3, Section 6, IM6105


Table 1. Troubleshooting (cont.)

Chipping orbreakage ofpiston.

1. Bad striking bar which is toohard or rounded on end al-lowing minimum contactwith piston striking face.

2. Worn chuck end compo-nents which permit strikingbar to cock in chuck so thatpiston strikes shank a glanc-ing blow.

1. Take bad striking bar out of ser-vice -- one bad striking bar candamage other parts.

2. Replace worn components.

, Section 6, IM6105

MAINTENANCE RECORDS AND NOTES

Instruction Manual

July 24, 1995

IM6105

Section 7

Page 1 of 4

DateRun Time(Hours)

Work Performed QtyWork

By

, Section 7, IM6105

DateRun Time

(Hours)Work Performed Qty

WorkBy

, Section 7, IM6105

NOTES

parts list for hydraulic drifter model:...

Documents