PRODUCT SUPPORT PROGRAM FOR REPLACING FRONT BRAKE COOLING HOSES ON CERTAIN 797F OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING FRONT BRAKE COOLING HOSES ON CERTAIN 797F OFF-HIGHWAY TRUCKS

Usage:

TEBE3971-01

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24Nov2015

(Revised 05Aug2016)

U-628

A-453

D-547

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Before/After	PRODUCT SUPPORT PROGRAM FOR REPLACING FRONT BRAKE COOLING HOSES ON CERTAIN 797F OFF-HIGHWAY TRUCKS
4257 5057		PS44921

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NOTE:

Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.

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 "PS44921" 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 24Nov2015 Service Letter. Changes have been made to the Affected Product.

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TERMINATION DATE

30Nov2017

PROBLEM

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The existing front brake cooling hose can leak on certain 797F Off-Highway Trucks. If an existing hose fails it will create unscheduled downtime.

AFFECTED PRODUCT

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Model	Identification Number
797F	LAJ00251-00253, 262, 266-269, 276, 283, 285, 287, 292, 296, 308, 320-321, 328, 341, 349, 358, 384, 403, 443-444, 458-461, 465-466, 468, 477, 483, 491-599
797F XQ	WSP00100-00104, 107-110, 112-114, 125-129

PARTS NEEDED

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Qty	Part Number	Description
4	6V8001	SEAL-O-RING
4	8T0568	SEAL-O-RING
1	4876293	HOSE AS
1	4876294	HOSE AS
1	4876295	HOSE AS
1	4876296	HOSE AS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 26% 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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New hoses are available with an improved bend radius to reduce the risk of hose kinking failures. Replace the existing 383-8872, 389-0458, 441-8424, and 452-6653 Hose Assemblies with 487-6293, 487-6294, 487-6295, and 487-6296 Hose Assemblies. All four hoses should be replaced when performing this program.

The right hand side hoses have seen failures in the 500-1,500 hour range. The recommendation is to replace the four brake cooling hoses prior to failure.

Once applying this service letter, proactive replacements will not be needed. After applying this letter any future hose replacements should be based upon inspections as outlined in the Operation and Maintenance Manual.

If applicable and not previously completed, PS44300 "Product Support Program for Replacing the Water Line Guard on Certain 797F and 797F XQ Off-Highway Trucks" should be applied with the installation of the new hoses.

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Image1

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%
0-9000 hrs, 0-18 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 4.0-hour job If there has been a previous repair, part age/hours will apply. Retain a copy of the previous repair invoice in the dealer's records for audit purposes, and specify repair date and machine hours in the "Additional Comments" section of the warranty claim.

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