PRODUCT SUPPORT PROGRAM FOR REPLACING THE COOLANT SHUNT TANK ON CERTAIN 795F AC AND 795F XQ OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE COOLANT SHUNT TANK ON CERTAIN 795F AC AND 795F XQ OFF-HIGHWAY TRUCKS

Usage:

TEBE3646-02

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22Dec2015

(Revised 05Dec2017)

U-681

A-494

D-598

O-591

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Before/After	PRODUCT SUPPORT PROGRAM FOR REPLACING THE COOLANT SHUNT TANK ON CERTAIN 795F AC AND 795F XQ OFF-HIGHWAY TRUCKS
1354 1380		PS44951

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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 "PS44951" 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 22Dec2015 (Revised 16Nov2016) Service Letter. Changes have been made to the Termination Date and Affected Product.

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TERMINATION DATE

31Dec2018

PROBLEM

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Engine coolant temperatures can decrease very quickly while idling on certain 795F AC and 795F XQ Off-Highway Trucks. The coolant temperature can decrease from 185 degrees Fahrenheit to nearly 150 degrees Fahrenheit in a matter of minutes; engine performance may be affected. This condition is exacerbated when the air conditioning system is switched ON and the fan is turning at its minimum speed.

Overcooling can be experienced in ambient temperatures as high as 70 degrees Fahrenheit, although the condition is most prevalent at temperatures just above freezing when the air conditioning is activated for defrosting/defogging the windshield.

AFFECTED PRODUCT

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Model	Identification Number
795F AC	ERM00151-00156, 160, 163-165, 168-170, 173-178, 180-181, 183-201, 205-206, 208-222, 225-227, 229-250, 252-296
795F XQ	SNT00100-00102

PARTS NEEDED

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Qty	Part Number	Description
1	1P3705	SEAL-RECTANGULAR
1	6G3027	SPACER
1	6V1889	CLIP-LOOP
2	6V3250	SEAL-O-RING
2	6V5063	SEAL-O-RING
1	6V8398	SEAL-O-RING-ORFS
2	6V9007	ADAPTER-ELBOW
1	6V9839	ADAPTER-TEE
1	8S0948	CLIP
5	8T4121	WASHER-HARD
2	8T4133	NUT
2	8T4136	BOLT-HEX HEAD
1	8T4172	BOLT-HEX HEAD
2	9S4191	PLUG-LD STOR
1	1637451	BRACKET
1	2502343	SEAL-O-RING
4	2949072	SEAL-O-RING-ORFS
1	4377416	HOSE AS
1	4377417	HOSE AS
1	4687412	TANK AS
1	4687416	BAFFLE
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 11% 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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Install a new shunt tank and eliminate the electronic thermostat bypass drain hose. Rework of the cowl is required. Refer to REHS9834, Special Instruction,
"Instructions for Rerouting the Expansion Tank Coolant Lines on Certain 795F AC Off-Highway Trucks", for additional information.

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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%
0-40000 hrs, 0-60 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%