PRODUCT SUPPORT PROGRAM FOR INSTALLING THE STEERING OIL COOLER ON CERTAIN 789D AND 789D XQ OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSTALLING THE STEERING OIL COOLER ON CERTAIN 789D AND 789D XQ OFF-HIGHWAY TRUCKS

Usage:

REBE8954-01

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10Dec2012

(Revised 13Dec2012)

U-669

A-528

D-568

O-609

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR INSTALLING THE STEERING OIL COOLER ON CERTAIN 789D AND 789D XQ OFF-HIGHWAY TRUCKS
1380 1374 4304 4346		PS43789

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NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS43789" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "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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NOTE:	This Revised Service Letter replaces the 10Dec2012 Service Letter. Changes have been made to the Problem statement.

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TERMINATION DATE

31Dec2014

PROBLEM

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The existing steering oil circuit can experience high temperature events on certain 789D and 789D XQ Off-Highway Trucks. If the existing steering oil circuit experiences high temperature events it can result in level 1 alarms, cause additional damage to the steering pump, and extended down time for repair.

AFFECTED PRODUCT

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Model	Identification Number
789D	SHH00288-00307 SPD00166-00386

PARTS NEEDED

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Qty	Part Number	Description
3	3D2824	SEAL-O-RING
8	6D4244	CLIP
1	6G2263	SPACER
1	6V9175	TEE-FACE SEAL
3	6V9746	SEAL-O-RING-ORFS
1	7J9108	SEAL-O-RING-ORFS
1	7X0752	BOSS-WELD
6	8D7185	WASHER
1	8T3851	BOSS-WELD
9	8T4121	WASHER-HARD
3	8T4133	NUT
4	8T4136	BOLT-HEX HEAD
1	8T4137	BOLT-HEX HEAD
4	8T4196	BOLT-HEX HEAD
1	8T8901	ADAPTER-TEE
1	8X7853	BLOCK
2	9R2613	BOSS
4	1690908	MOUNT AS
1	2006311	VALVE-CHECK
1	2310336	STUD-TAPERLOCK
2	2812592	TAPERLOCK
1	2884403	STUD-TAPERLOCK
1	3023908	SPACER
1	3116039	PLATE
4	3514318	CLIP-LOOP
1	3709329	CORE AS-OCLR
1	3854832	HOSE AS
1	3854833	HOSE AS
1	3948483	HOSE AS
1	3948484	TUBE AS
1	3948485	TUBE AS
1	3948486	BRACKET AS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 29% 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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Refer to Special Instruction REHS4276 "Procedure to Install an Additional Steering Oil Cooler on the 789D Off-Highway Trucks". It is recommended that all trucks should complete this service letter. Applications with haul profiles that include extended periods of retarding, high ambient temperatures, or trucks currently experiencing issues with high steering temperatures should give priority to completing this letter.

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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%
0-12000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%