PRODUCT SUPPORT PROGRAM FOR INSPECTING AND POSSIBLY REWORKING THE TURBOCHARGERS ON CERTAIN HIGH ALTITUDE ARRANGEMENT 793F OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSPECTING AND POSSIBLY REWORKING THE TURBOCHARGERS ON CERTAIN HIGH ALTITUDE ARRANGEMENT 793F OFF-HIGHWAY TRUCKS

Usage:

TEBE3614-03

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09Oct2015

(Revised 04Jan2017)

A-388

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Before/After	PRODUCT SUPPORT PROGRAM FOR INSPECTING AND POSSIBLY REWORKING THE TURBOCHARGERS ON CERTAIN HIGH ALTITUDE ARRANGEMENT 793F OFF-HIGHWAY TRUCKS
1052 1053 1059		PS44879

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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 "PS44879" 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 09Oct2015 (Revised 30Nov2016) Service Letter. Changes have been made to the Parts Needed.

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TERMINATION DATE

31Oct2017

PROBLEM

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The existing turbochargers can lose performance over time on certain High Altitude Arrangement 793F Off-Highway Trucks. If the existing turbochargers lose performance it will result in low power complaints and high exhaust temperature alarms.

AFFECTED PRODUCT

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Model	Identification Number
793F	SSP00114, 155-156, 211, 213, 215, 220-225, 227-232, 770, 782, 883, 889-891, 897, 901, 903, 908, 913, 916, 919-920, 922, 931, 951, 956, 960, 962-963

PARTS NEEDED

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Qty	Part Number	Description
4	8C3107	SEAL-O-RING
4	2302536	CLAMP-T'BOLT
4	3025889	CLAMP-V-BAND
2	3049600	BELLOWS AS
4	3145837	HOSE-HUMP
4	3154016	CLAPM-V-BAND
8	3172122	CLAMP-V-BAND
4	3543510	BELLOWS AS
4	3544251	CLAMP-V-BAND
4	3715943	CLAMP-V-BAND
2	4435940	BELLOWS AS
4	4461290	CLAMP-V-BAND
4	4880216	NOZZLE-RING
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% 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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Monitor boost pressure trends through VIMS. If boost pressure trends are decreasing, follow Special Instruction, REHS9563. If nothing is found, the turbos need to be inspected for a wear step in the bearing housing, as described in REHS9563. Only rework turbochargers that are found to have the extra step machined into the bearing housing.

This program can be used to inspect and rework from 1 to 4 turbos.

Record the turbocharger serial number and take a photo of the extra step machined into the bearing housing for each turbocharger that is reworked.

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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%
0-13000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 20.0-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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