tightlock center buffer couplers passenger coaches ... · high tensile aar type ‘h’ tight lock...

FAIVELEY TRANSPORT INDIA LIMITED Harita, HOSUR – 635109

FAIVELEY TRANSPORT INDIA LIMITED Manual No.: V/V 2002/098/I Rev. 01

Date: 23.06.2005 Sheet 1 of 25

Report V/V 2002/098/I Rev. 01 Prepared Date: 23.06.2005 W. Kesting / M K Jagirdar

TIGHTLOCK CENTER BUFFER COUPLERS

Passenger Coaches / Indian Railways

OPERATION AND MAINTENANCE MANUAL

01 23.06.2005 M K Jagirdar M K Jagirdar B Chatterjee 00 12.01.2004 M K Jagirdar M K Jagirdar B Chatterjee first issue

Rev. Date Prepared by Checked by Approved by Modifications

June 05



Date: 23.06.2005 Sheet 2 of 25

List of Contents:

1 Information in this manual 3 1.1 Safety and operating safety regulations 4 1.2 Warranty 6 1.3 Labelling 6 2 General 7 2.1 Main features of the Tightlock Coupler Type “H” 7 2.2 Tightlock coupler head Type “H” 8 2.3 Draft gear 9 2.4 Supporting device 10 2.5 Manual uncoupling device 10 2.6 Mounting plates 11 3 Coupler mounting and dismounting 11 3.1 Preparation of the vehicle 11 3.2 Mounting of the draft gear 11 3.3 Mounting of the coupler head 12 3.4 Mounting of the supporting device 12 3.5 Mounting of the manual uncoupling device 12 3.6 Removing mounting aids 12 3.7 Final check of coupler installation 13 3.8 Dismounting of coupler 12 3.8.1 Dismounting of coupler head 13 3.8.2 Dismounting of draft gear 14 4 Coupling and uncoupling procedure 14 4.1 General Information 14 4.2 Coupling procedure 15 4.3 Uncoupling procedure 15 5 Maintenance of the coupler 16 5.1 Maintenance of the coupler head 16 5.2 Maintenance of the draft gear 20 5.3 Maintenance of the supporting device 21 5.4 Maintenance of the manual uncoupling device 21 6 List of spare parts and special tools 22 6.1 Spare parts for the coupler head 22 6.2 Spare parts for support device 23 6.3 Spare parts for draft gear 23 6.4 Spare parts for manual uncoupling device 24 6.5 Special tools and gauges 24 7 Conclusion 25 8 List of enclosures 25



Date: 23.06.2005 Sheet 3 of 25

1 INFORMATION IN THIS MANUAL

This manual is intended to provide technical instructions for control and operation. It contains all the data for proper and correct performance of this work.

References to figure numbers and item numbers in the text are placed in brackets: e.g. (2.1/3) means: Fig. 2.1, item 3.

In this manual, to make certain situations clear the following graphic symbols are used:

By notes important information is set off from the rest of the text!

Caution means that, in the event of non-observance of the manual's contents, material damage can occur!

Warning means that non-observance of the appropriate note can lead to injuries!

01/2004 issue

© This manual is subject to copyright. The rights resulting from this are reserved, in particular those of translation, of reprinting, of broadcasting, of photomechanical or other similar reproduction as well as storage and evaluation in data processing equipment. The same applies even in the event of the utilisation of this manual in the form of excerpts. Otherwise a contractual provision is required.

SAB WABCO reserve the right to modify the product described here in accordance with technical progress at any time and without prior announcement, unless it is subject to a contrary contractual ruling.

Note

Caution



Date: 23.06.2005 Sheet 4 of 25

1.1 Safety and operating safety regulations

(1) The coupling has been constructed according to the state of the art and the recognised safety rules. Nevertheless, dangers for life and limb of the user or third parties can arise when it is in use, or there can be detrimental effects on the equipment and other material values.

(2) Use the coupling only in a perfect technical condition and also only for the intended purpose, bearing in mind the safety regulations and the dangers with reference to the operating instructions! In particular have defects eliminated without delay.

(3) The coupling is intended exclusively for coupling/uncoupling rail vehicles

Use for the intended purpose includes the observance of the contents of this manual.

(4) Keep the manual in a place to be made known to the user.

(5) Coupling with other vehicles is not permitted in explosion-protection areas! Danger of injury!

(6) During work on the coupling ensure that there is adequate lighting - especially during the hours of darkness.

(7) As a supplement to this manual observe and apply the general statutory and other binding accident prevention and environmental protection regulations!

(8) The personnel assigned to work on the coupling must, before starting work, read the instructions and in particular the section on "Safety notes". This applies to a particular extent to staff carrying out such work only sporadically.

(9) During coupling of the vehicles it is forbidden to stand or move within the area in front of the coupler!

(10) As far as necessary or required by regulations, use personal protective equipment (e.g. protective gloves)!

WARNING!

WARNING!



Date: 23.06.2005 Sheet 5 of 25

(11) No alterations, additions or modifications to the coupling may be made which are not expressly approved by the manufacturer.

(12) Spare parts must meet the technical requirements specified by the manufacturer. This is only guaranteed if original SAB WABCO spare parts are used.

(13) Refrain from every way of working which is prejudicial to safety.

(14) Adhere without fail to intervals for recurrent checks and servicing/maintenance work prescribed or stated in the maintenance instructions!

(15) Use only prescribed lubricants.

(16) Observe adjusting, maintenance and maintenance and testing activities and deadlines prescribed in the maintenance instructions including data on the replacement of parts/equipment elements! Only specialist personnel may carry out such activities.

(17) Always firmly tighten screw connections loosened during maintenance and repair work; observe the prescribed tightening torques.

(18) Ensure safe and environmentally compatible disposal of operating and auxiliary materials as well as replaced parts!

(19) When handling oils, greases and other chemical substances observe the safety regulations applying to the product!



Date: 23.06.2005 Sheet 6 of 25

1.2 Warranty

For every SAB WABCO product supplied SAB WABCO provides a warranty for proper and correct manufacture within the scope of the contractual and delivery terms.

This warranty does not apply to such damage as is caused by normal wear, improper treatment, negligent treatment, fitting of non-original spare parts, insufficient care and/or non-observance of this technical manual.

The coupler must be used only by appropriately trained persons. Otherwise any warranty in accordance with the delivery terms shall become null and void.

1.3 Labelling

All parts of coupler are fitted with identification plates coupler head, draft gear etc., for identification. The following information is printed/punched on the identification plates.

- Manufacturer

- Description/Part number/Drawing number

- Serial number/Year of manufacturing etc.,



Date: 23.06.2005 Sheet 7 of 25

2 UGENERALU

High Tensile AAR Type ‘H’ Tight lock Centre Buffer Coupler (CBC) for passenger coaches of Indian Railways are according to requirements of IR specification, described in technical specification C-K009 Rev-01 issued by Carriage Directorate “Research Design and Standards Organisation” at Lucknow.

The coupler is designed for mounting on coaches having draft gear pocket to dimension as specified in technical specification C-K009. Presently LHB design passenger coaches / conventional conversion type coaches built at Rail Coach Factory /Kapurthala and conventional conversion type coaches built at Integral Coach Factory /Chennai are designed to receive these couplers.

2.1 UMAIN FEATURES OF THE TIGHT LOCK COUPLER TYPE “H”

Arrangement on the coaches is according to drawing numbers indicated in the list of annexures at para 8 in this manual. There are two arrangement drawings one for conversion type coaches and another for LHB design coaches attached as annexure to the manual. The picture below illustrates pictorial arrangement of coupler parts.

Tightlock Coupler Head

Draft Gear

Supporting Device

Manual Uncoupling Device



Date: 23.06.2005 Sheet 8 of 25

The coupler consists of the following main parts:

2.2 Tight lock Coupler head Type “H”

Coupler head (item 1 of main arrangement drawing) is a standard AAR “H” type tight lock coupler head with an uncoupling device that can be operated from outside the track when connected to the manual uncoupling device that is also part of the CBC supply. The coupler head has a shank/draw bar cast together with the head. Parts like knuckle, lock etc., are assembled in the coupler head to enable coupling and uncoupling. Tail end of the draw bar is provided with a UIC stabilising link and connects to the draft gear (item 3 in the arrangement drawing) through the central pin. A backlash compensation device is assembled in the shank at tail end of coupler head. This device is held in position by two side bolts that are to be removed only after installation on the coach.

Tightlock Coupler Head Type „H“

Coupler Shank

UIC Stabilizing Linkage

Stabilizing Spring Element

Wear Plate



Date: 23.06.2005 Sheet 9 of 25

2.3 Draft gear

The draft gear (item 3 in the arrangement drawing) is a double acting device for energy absorption during coupling and during service. The device is designed to fit into the draft gear pocket of the coach and absorbs the dynamic energy in both draw and buff modes. The stroke in tensile (draw) direction is limited to 58P

- 5P mm while that in the compressive (buff) direction is 80 mm (max).

Note: Front stoppers and Rear stoppers are to be welded in the draft gear pocket of coach as per recommendations. Faiveley Transport supplies the UIC design stoppers that are welded on coaches built at ICF. Stoppers welded on coaches built at RCF are of LHB design and not in the scope of supply of Faiveley Transport.

Housing

Buff Plate

Spring Column

Rear Plate



Date: 23.06.2005 Sheet 10 of 25

2.4 Supporting device

The supporting device (item 2 in the arrangement drawing) comprises of four preloaded compression springs. The device is placed on a platform and bolted to the car structure. The coupler head rests on the top wear plate of the supporting device and this device supports the coupler weight.

Frame

Beam with Wear Plate

Compression Springs

2.5 Manual uncoupling device

The manual uncoupling device (item 6 in the arrangement drawing) is mounted on one side near end wall of coach connecting the uncoupling mechanism on coupler head through the sliding rod. Handle of the device is unlocked, lifted and then rotated in the clockwise direction for uncoupling. After coupling locking of the handle has to be ensured to prevent unauthorised uncoupling. Special key for operating the lock is provided by Faiveley Transport.



Date: 23.06.2005 Sheet 11 of 25

2.6 Mounting plates

Base plate and support plate (item 4 & 5 respectively in the arrangement drawing) are fastened to the under frame after mounting draft gear in the UIC pocket of coach. Base plate has a hole for inserting the central pin. A locking plate is fitted by sliding in between the central pin and base plate to prevent central pin from falling off. This arrangement facilitates fitment and removal of coupler head without removing the base plate. It is very important to use only bolts Grade 10.9 for fastening the mounting plates.

3 COUPLER MOUNTING AND DISMOUNTING

3.1 Preparation of the vehicle

The dimension of draft gear pocket on coach has to conform to that shown in our arrangement drawings.

Apply adequate grease on all bearing surfaces of draft gear and in the draft gear pocket before mounting the draft gear.

The coupler parts delivered are ready for mounting to the vehicle under frame.

Mounting procedure/sequence to be followed for installation of coupler on the vehicle is described below. For lifting the coupler parts a standard hydraulic lifting table is to be used.

3.2 Mounting of the draft gear

The spring column of the draft gear (refer drawing of draft gear) is pre-compressed during despatch from the factory by means of the mounting aid (Pos. 10 and 11 in the drawing) to a dimension of approx. 505 mm between the front buffing plate and the rear plate. This is important, to bring the draft gear into the dimension 510 mm in the pocket (between front and back stoppers).

The draft gear is lifted from the underneath into the draft pocket by means of a standard hydraulic lifting table. The draft gear is then secured in position by means of two mounting plates (item 4 and 5 of arrangement drawing) - on the bearing strips of which adequate grease is applied – and 16 bolts of the specified size. Ensure Bolts are Grade 10.9 and are tightened to the recommended torque value. Use of thread locking agent is recommended.



Date: 23.06.2005 Sheet 12 of 25

3.3 Mounting of the Coupler head

The coupler head is to be on a placed hydraulic lifting table or on the forklift and inserted into the draft gear from front end of coach to connect the coupler head linkage to the draft gear by means of the central pin. The central pin has to be inserted through the hole in base plate from the bottom side of under frame of the coach. The position of central pin has to be secured by sliding the locking plate in between the base of central pin and base plate. Locking plate is secured by two M16 bolt/nut and locked with spring dowel/split pin.

3.4 Mounting of the supporting device

Holding the coupler head in lifted position (above horizontal), the supporting device is positioned on the vehicle platform below shank of coupler head before letting the coupler head to rest on the supporting device. The supporting device is then fastened using four bolts M20x 50 mm. The bolts are to be tightened to the recommended torque value. Use of thread locking agent is recommended.

Apply grease on the wear plate of supporting device.

3.5 Mounting of the manual uncoupling device

To complete the coupler mounting, manual uncoupling device (item 6 in the arrangement drawing) has to be fitted. Mounting brackets (2 types) has to be mounted on the vehicle structure and the manual uncoupling device has to be fastened to these mounting brackets. Uncoupling lever has to be connected to the coupler head before fastening the device to mounting bracket. Use of thread locking agent and tightening with adequate torque is recommended. Uncoupling is done by lifting and turning handle of the device clockwise.

3.6 Removing mounting aids

Mounting aids are factory assembled on the coupler head and draft gear to enable fitment of coupler on to the vehicle. The same have to be removed after completing the fitment to enable coupler function as desired.

Mounting aid on draft gear (item 10 and 11 in drawing of draft gear) has to be removed using a ¾” Ratchet and socket 30 mm (preferably deep socket). Removing the mounting aid will release draft gear spring column to the designed preload position and the draft gear will be firmly seated in between front and back stoppers.



Date: 23.06.2005 Sheet 13 of 25

Mounting aid on coupler head (item 4 in drawing of coupler head) has to be removed using the side pin puller. Removing this mounting aid will activate the backlash compensation device. The two holes on the shank of coupler head are then to be filled with grease.

The removed mounting aids will be required whenever coupler has to be dismounted from vehicle. Therefore these (mounting aids) are to be retained with the workshop for use in future.

Note:

Adequate greasing of surfaces of draft gear and surface of front stoppers on coach having relative motion has to be ensured during mounting.

No grease or oil is allowed in the coupler head and its parts like knuckle, lock etc., as it will facilitate uncoupling and hence is dangerous. However adequate grease has to be applied at tail end and shank of coupler head having relative movement with supporting device, central pin and draft gear.

3.7 Final check of coupler installation

After completion of coupler installation the following functional checks are to be executed:

- Proper fastening and securing of all bolt connections to recommended torque.

- Free movement of the coupler head in horizontal and vertical direction.

- Free movement of the lever system of the manual uncoupling device.

- Functional check of the uncoupling device on coupler head by operating manual uncoupling device.

- Coupling and uncoupling test. (described in clause 4)

3.8 Dismounting of coupler

3.8.1 Dismounting coupler head

Remove sliding rod from the rotary uncoupling device of coupler head by removing manual uncoupling device from mounting brackets fitted on coach.

Coupler head is dismounted first by pulling out central pin with central pin puller. To access the central pin remove the base plate or remove the supporting device and only the locking plate from base plate.

Support coupler head on a hydraulic lifting table while removing the central pin. After removing coupler head following operation has to be done to keep coupler head ready for fitment again on coach.



Date: 23.06.2005 Sheet 14 of 25

Assemble backlash compensation device (UIC linkage assembly) into shank of coupler head, as in shown in the drawing of coupler head. Place tail end of coupler head on a hydraulic press (minimum 10 T capacity) and compress the spring inside using a taper punch. Insert side bolts in two holes on coupler shank. Apply adequate grease to side bolts/holes. Side bolts shall be inserted by hand without use of external force.

3.8.2 Dismounting draft gear

Assemble mounting aid of draft gear (item 10 & 11 in drawing of draft gear) as shown in the drawing. Using a ratchet and 30 mm socket tighten the bolt so as to compress the draft gear spring. With adequate tightening draft gear leaves the stoppers and becomes free in the pocket. Place a hydraulic table below the draft gear and remove all fasteners on the base and support plates. Slowly lower the hydraulic table ensuring that draft gear also slides down the pocket.

4 COUPLING AND UNCOUPLING PROCEDURE

4.1 General Information

To facilitate the safe operation of building up trains and coupling of coaches by the tight lock couplers it is absolutely necessary to follow the instructions given below.

The specified coupler head is a tight lock coupler head according to the ARR standard type “H”. This “H”-Type coupler for the IR - Coaches has the following gathering range:

Horizontal: ± 110 mm

Vertcal: ± 90 mm

It is to be understood, that these values of the coupler centre offsets are strictly valid when the coupler axes are parallel. The values are as specified in technical specification C-K009 issued by RDSO. Proper coupling procedure is recommended to achieve an easy and safe coupling/uncoupling of vehicles in practical service.

During coupling and uncoupling care should be taken that no person stands between the vehicles. Coupling is automatic, for uncoupling - unlock, lift and rotate manually the handle of manual uncoupling device in a clockwise direction.



Date: 23.06.2005 Sheet 15 of 25

4.2 Coupling procedure

The coupling procedure is described as follows:

- Bring the vehicles near to each other at a slow speed (approx. 2 - 3 km/h) and stop the vehicles at approximately 1 meter distance of each other.

- Check alignment and position of coupler centres. Couplers must stand within the gathering range as given above.

- If required pull the couplers manually towards each other and make sure that they are in the gathering range of the coupler geometry.

- Now push the vehicles together slowly (approx. 3 km/h) for coupling the two coaches.

- Check position of tell tale device for proper coupling (location of the tell tale is shown in picture below)

- Make sure, that the handle of manual uncoupling device is locked after coupling.

After coupling reverse the power to pull (snatch) the vehicles apart. This is a typical pull test to reconfirm a positive coupling.

Location of the tell tale

4.3 Uncoupling procedure

For uncoupling use the manual uncoupling device provided, uncoupling lever of this device is accessible from the trackside. Unlock the handle by rotating locking screw with the special key. Lift and turn the handle in clockwise direction to a horizontal position (minimum 90°) and pull the coaches apart.

Before uncoupling make sure that the couplers are not subjected to any tensile load and the uncoupling lever is fairly free to turn. A common practice for this uncoupling operation is also to push the vehicles together (with one vehicle applied with parking brake) to avoid excessive binding in the system.



Date: 23.06.2005 Sheet 16 of 25

5 MAINTENANCE OF THE COUPLER

The coupler needs overhauling at an interval 6 to 8 years of service.

5.1 Maintenance of the coupler head

The maintenance of the coupler head in general is described in the AAR manual “Standard for Periodic Inspection and Maintenance of Passenger Coaches APTA M-002-98”

- Inspection of automatic coupler head (every 3 month) includes the following:

- Visually examine the coupler head.

- Coat bare steel areas of coupler head body and knuckle with Molykote D321R (or equivalent) dry lubricant spray.

CAUTION: Under no circumstances spray lubricate the lock, lock lift lever or knuckle locking faces as this will allow the lock to be "squeezed" upwards and may lead to uncoupling!

In addition to the 3 month activities carry out the following every 1 year:

- Jaw gap gauge test (see description below)

- Knuckle profile gauge check (see description below)

- Anti creep check (see description below)

Jaw gap gauge test

- Check for free slack in the contour of the coupler using the “Inspector Contour Gauge - II” 228943W14.

- If the coupler contour exceeds limit of the gauge, it indicates that knuckle may need replacement.

- Check with “Condemning limit gauge 228965W14 (old no. D228009-100), if the gap exceeds limit of the gauge, the knuckle shall be replaced.

- If this replacement does not bring the coupler into limits, the lock may be replaced.

- If this replacement does not bring the coupler into limits, the coupler body must be replaced.



Date: 23.06.2005 Sheet 17 of 25

Sketch:

Knuckle profile gauge check

- Check the contour of the knuckle using the “Inspector Contour Gauge - I” 228949W12 (old no. D228008-100). Shake the knuckle while passing the gauge with small vertical movements. This is to ensure that slack in the assembly is included in the profile.

- If gauge does not pass, parts must be replaced or locks modified per APTA standards.

Sketch:

3½"

3⅛"Normal Plus ⅜"



Date: 23.06.2005 Sheet 18 of 25

Anti creep check

Determine anti-creep protection and ensure it complies with specifications.

Step 1: Inspection for anti-creep protection is made through the front of the coupler.

Step 2: With the coupler in the locked position insert a pry bar through the front of the coupler between the knuckle tail shelf and lock, forcing lock upward.



Date: 23.06.2005 Sheet 19 of 25

Step 3: Forcing the lock upward as far as it will go engages the top of the toggle with the bottom of the knuckle tail shelf.

Step 4: Insert a pry bar between the leg of the lock and the front of the lock hole. Pull toward the front of the coupler to force the lock leg rearward.

Step 5: If the front edge of the toggle is 1/8” or more forward of the rear corner of the knuckle tail shelf the anti-creep is unacceptable, replace lock lift assembly.



Date: 23.06.2005 Sheet 20 of 25

Step 6: If an actual measurement is desired, inscribe a line on top of the toggle along the rear face of the knuckle tail shelf, measure at point “C”, the measurement must not be less than 3/8”.

A complete coupler head overhaul is recommended at every 6 to 8 years interval.

Procedure for building up the wear on coupler shank

The coupler shank is welded with a wear plate in the supporting area, made of manganese steel. This plate is the contact area of the coupler shank to the coupler support device. In case of wear, the worn plate can be removed and substituted by a new one. Welding procedure commonly adopted in the railway industry for wear plate replacement is also recommended for this application.

5.2 Maintenance of the draft gear

Maintenance of draft gear has to be done together with the inspection of the whole coupler. The following actions are needed:

- Visually examine the draft gear (every 3 month)

- Check the Miner spring column during the main overhaul (6 to 8 years) for mechanical damage and pre-load value.

- Replace spring column in case of mechanical damage or change in preload value.



Date: 23.06.2005 Sheet 21 of 25

5.3 Maintenance of the supporting device

Maintenance of supporting device has to be done together with the inspection of the whole coupler. The following actions are needed:

- Visually examine the supporting device (every 3 month)

- Check the compression springs during the main overhaul (6 to 8 years)

- Check the thickness of wear plate. If needed remove the wear plate from the support beam and add a new plate to the beam by tack welding

- Replace the compression springs in case of mechanical damage and loss of preload.

5.4 Maintenance of the manual uncoupling device

Maintenance of manual uncoupling device has to be done together with the inspection of the whole coupler. The following actions are needed:

- Visually examine the manual uncoupling device and add grease on slide rods (every 3 month)

- Check the wear of the uncoupling rods during the annual inspection (every year)

- Check the wear of the uncoupling rods and the bearings during the main overhaul (6 to 8 years)

- Replace the uncoupling rods in case of excessive wear



Date: 23.06.2005 Sheet 22 of 25

6 LIST OF SPARE PARTS AND SPECIAL TOOLS

6.1 Spare parts for the coupler head

The following sketch shows the single parts of the coupler head:

Recommended spare parts for 6 to 8 years for an every quantity of 200 couplers is listed below. The SAB WABCO part numbers for different parts of the coupler head are listed in the following table:

Description Part Numbers

Coupler head, cpl. without UIC stabilizing Spring D228587-100

Coupler head body D228582-100

Wear plate D228582-103

Knuckle D228583-100

Lock D228584-100

Knuckle thrower D228585-010

Double rotary lock lift assembly D228778-100

Knuckle pivot pin D228761-100

Split pin 912 0015 00

Support pin 727 8515 00

Split pin for support pin 912 0010 00



Date: 23.06.2005 Sheet 23 of 25

All other coupler parts are shown in the respective part list in our drawings attached as annexure.

Spares recommended and assumed quantity for holding as stock to maintain a population of 200 couplers for 6 to 8 years is listed below:

Qty.(no.)

Recommended Part description Part number

20 Knuckle D228583-100

20 Knuckle pivot pin D228761-100

20 Lock D228584-100

20 Knuckle thrower D228585-010

10 Double rotary lock lift assembly D228778-100

10 Set of rubber spring for UIC linkage with end supports

727 1300 00

6.2 Spare parts for support device

Qty. (no.)

recommended Part description Part No.

20 Compression spring 727 8070 00

6.3 Spare parts for draft gear

Qty. (no.)


50 Tecspak spring 727 8280 00



Date: 23.06.2005 Sheet 24 of 25

6.4 Spare parts for manual uncoupling device

Qty.(no.)


50 Operating rod 727 8420 00

50 Sliding Rod 727 1100 00

6.5 Special tools and gauges

Gauges needed for checking the wear of the coupler head assembly are given below. Application of the gauges is described in clause 5.1.

Qty.(no.)


5

Jaw Gap Gauge /

Inspector contour gauge – II

Condemning limit gauge

228943W14

&

228965W14

5 Profile Gauge /

Inspector Contour Gauge – I) 228949W12

Only standard tools are required for mounting and dismounting coupler like ratchets, torque wrench etc. Special pullers are used for removing the mounting aid from coupler head and for removing central pin for dismounting coupler head.

Qty.(no.)


2 Side bolt - puller -

2 Central pin - puller -

The quantities of spare parts as given above are assumed. However the quantities will vary depending on severity of service conditions and annual mileage of coaches.



Date: 23.06.2005 Sheet 25 of 25

7 Conclusion

The tight lock coupler as well as the draft gear and other parts are of service proven design and manufacture. They require less maintenance, less care and are easy in operation and handling.

For overhauling and repair of couplers SAB WABCO recommends also that the couplers be to be sent back to our works in Hosur. Our workshop is equipped with all the facilities to render this service.

With experience in many applications we recommend that users adapt deviated maintenance frequency and service as required in the particular application and environment of use in order to get better service performance.

8 List of annexure

Annexure Description Drawing No. Part No.

1 Arrangement of Automatic Tightlock Coupler

A1 727 0080 / A1 727 0131

727 0010 00/ 727 0020 00

2 Coupler head A2 727 0127 / 228587F10

727 1010 00/ D228587-100

3 Supporting Device A2 727 0123 727 1020 00 4 Draft Gear A1 727 0074 727 1030 00 5 Manual uncoupling device A2 727 0077 727 1090 00 6 Manual uncoupling device- fitment A2 727 0138 -

tightlock center buffer couplers passenger coaches ... · high tensile aar type ‘h’ tight lock...

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