PRODUCT SUPPORT PROGRAM FOR REPAIRING THE TRANSMISSION ON CERTAIN D8T TRACK-TYPE TRACTORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPAIRING THE TRANSMISSION ON CERTAIN D8T TRACK-TYPE TRACTORS

Usage:

REBE2747-00

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25Oct2007

U-538

A-439

D-438

O-471

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*After Failure Only*	PRODUCT SUPPORT PROGRAM FOR REPAIRING THE TRANSMISSION ON CERTAIN D8T TRACK-TYPE TRACTORS
3155 3030		PS51377

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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 "PS51377" 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

31Oct2010

PROBLEM

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The existing transmission can fail clutches on certain D8T Track-Type Tractors. If the existing transmission fails a clutch, the transmission needs to be repaired as well as the power train oil system cleaned.

Note: Under this program replace only the friction disc and plates in the clutch that failed.
Note: All 5 transmission modulating valves need to be replaced.

AFFECTED PRODUCT

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Model	Identification Number
D8T	J8B00274-00434 KPZ00545-00765

PARTS NEEDED

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Qty	Part Number	Description
1	0R5549	CORE GP-O CLR
2	1R0778	ELEMENT AS
1	2D6506	SEAL-O-RING
1	5P4057	SEAL-O RING
2	6I8500	PLATE-CLUTCH (After #3 or #4 clutch failure only)
2	6P5317	RING-SEAL
3	6Y5911	DISC-FRICTION (After #3 or #4 clutch failure only)
4	6Y5912	DISC-FRICTION (After #5 clutch failure only)
1	8D9739	SEAL-RING
3	8P1964	PLATE-CLUTCH (After #5 clutch failure only)
3	8P2019	RING-SEAL
4	8P2022	RING-SEAL
1	8P2023	RING-SEAL
4	8P2051	PLATE-CLUTCH (After #1 or #2 clutch failure only)
2	8P8357	RING-SEAL
1	9G0286	RING-SEAL
5	9P7390	DISC-FRICTION (After #1 or #2 clutch failure only)
2	1328876	ELEMENT AS-HYD
1	1564575	SEAL-LIP TYPE
1	2032288	GASKET-COVER
1	2160273	SEAL-LIP TYPE
5	2443114	VALVE GP-MDL -C

ACTION REQUIRED

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After Failure Repair Procedure

Reference RENR7481 "Disassembly and Assembly for D8T Track-Type Tractors Power Train".

1. Perform needed work to fix the failed clutch and clean the transmission.

Note: The parts list contains the friction disc and plates for all of the clutches. Under this program replace only the friction disc and plates in the clutch that failed.

2. Begin cleaning power train oil system by cleaning all suction screens in the case, torque converter, and transmission.
3. Remove the power train oil cooler and flush the cooler lines.
4. Install Reman oil cooler core.
5. Remove the torque converter for cleaning and inspecting.
6. Remove final drives from the machine to inspect/clean the brake components.
7. Remove brake valve and clean inlet screens.
8. Clean case sump and tubes.
9. Reinstall final drives, transmission, and torque converter.
10. Replace power train oil filter.
11. Kidney loop the power train oil to cleanliness level of 16/13. Do not shift the transmission during the kidney looping process.
12. Replace the power train filters again.
13. Replace all 5 transmission modulating valves.
14. Calibrate the transmission modulating valves.

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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%