PRODUCT SUPPORT PROGRAM FOR REPLACING A FAILED PUMP COUPLING ON CERTAIN 345C HYDRAULIC EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING A FAILED PUMP COUPLING ON CERTAIN 345C HYDRAULIC EXCAVATORS

Usage:

REBE5104-00

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08Dec2009

U-422

A-343

D-374

O-377

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*After Failure Only*	PRODUCT SUPPORT PROGRAM FOR REPLACING A FAILED PUMP COUPLING ON CERTAIN 345C HYDRAULIC EXCAVATORS
5062 3252		PS51768

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NOTE:

This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS51768" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

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NOTE:

The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

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TERMINATION DATE

31Dec2011

PROBLEM

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The pump coupling may fail on certain 345C Hydraulic Excavators. The pump coupling may fail due to excessive wear on the element caused by either improper installation techniques, movement of the coupler on the pump shaft or low heat resistance of the coupling element.

The new coupling has positive shaft retention, an increased set screw retention force and improved heat resistance in the coupling element.

AFFECTED PRODUCT

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Model	Identification Number
345C	BWY00102-00348 DHP00248-00463 ESD00168-00245 GPH00130-00537 JAR00312 MDC00226-00227, 233 PJW00350-02442 SPC00221-00283 TBA00133-00452 TDG00250-00412 WDE00142-00168
345C FM HEEL	A3L00100-00105
345C L	ELS00151-00179 FPC00101-00146 GBH00176, 179, 182 GCL00161-00279 LYS00133-00190 S5M00221-00316 SCN00181-00205 TAJ00210-00380
345C MH FCR	M2R00151-00256, 301-304
345C MH HCR	D3S00171-00177, 301-304 MTE00131-00132
345C OEM	B6N00103, 111-171 NRF00100-00104

PARTS NEEDED

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Qty	Part Number	Description
4	0998111	PIN-SPRING
4	1718971	BOLT
1	3244184	COUPLING GP-BSC
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 3% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

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If the existing pump coupling has failed, replace it with a new pump coupling. See the attached Rework Procedure and refer to the Service Manual if/as necessary to make the repair.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-6000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
6001-10000 hrs, 37-60 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

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NOTE: This is a 12.0-hour job

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PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Rework Procedure

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NOTE: Refer to "Disassembly and Assembly (Media Number RENR8612)" for instructions on removing, disassembly, assembly, and installing the coupling.

1. Remove the former coupling gp. Refer to the "Media Number RENR8612 (Main Hydraulic Pump and Pump Drive Coupling - Remove)".

2. Install alignment pins (099-8111) into the flywheel. Refer to Image 1.1.1.

Image1.1.1

3. Install inserts (1). Install socket head bolts (171-8971). Tighten socket head bolts (171-8971) to a torque of 465 +/- 25 N.m (343 +/- 18 lb ft). Refer to Image 1.2.1.

Image1.2.1

4. Install coupling element (2). Refer to Image 1.3.1.

Image1.3.1

5. Install alignment pins (6), inserts (4), and socket bolts (5) through inserts (4) and into hub (3). Refer to Image 1.4.1. Tighten bolts (5) to a torque of 465 +/- 25 N m (343 +/- 18 lb ft). Tighten bolts of plate of hub (3) to a torque of 45 +/- 10 N m (33 +/- 7 lb ft).

Image1.4.1

6. Coupling assembly (8) must be flush with the end of the pump shaft. Install setscrews (7). Tighten setscrews (7) to a torque of 210 +/- 10 N m (155 +/- 7 lb ft) in order of "(7)-X -> (7)-Y -> (7)-X". Refer to Image 1.5.1.

Image1.5.1

7. Attach Tooling (A) and a suitable lifting device to hydraulic pump assembly (9). The weight of hydraulic pump assembly (9) is approximately 318 kg (700 lb). Install hydraulic pump assembly (9) and bolts (10). Refer to Image 1.6.1 and Image 1.6.2.