PRODUCT SUPPORT PROGRAM FOR REPLACING THE 1000 PSI PRESSURE GAUGES INSIDE THE HYDRAULIC ENCLOSURE ON CERTAIN 794 AC OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE 1000 PSI PRESSURE GAUGES INSIDE THE HYDRAULIC ENCLOSURE ON CERTAIN 794 AC OFF-HIGHWAY TRUCKS

Usage:

TEBE5366-01

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03Feb2017

(Revised 16Feb2017)

U-69

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Before/After	PRODUCT SUPPORT PROGRAM FOR REPLACING THE 1000 PSI PRESSURE GAUGES INSIDE THE HYDRAULIC ENCLOSURE ON CERTAIN 794 AC OFF-HIGHWAY TRUCKS
7513 7450 0770		PS45377

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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 "PS45377" 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 03Feb2017 Service Letter. Changes have been made to the Service Claim Allowances.

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TERMINATION DATE

28Feb2019

PROBLEM

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The existing 1000 psi pressure gauges, inside the hydraulic enclosure, on certain 794 AC Off-Highway Trucks, can be subject to transient pressure spikes greater than 1000 psi. These pressure spikes can damage the pressure gauge where it may not properly zero. If the pressure gauge does not properly zero with pressure removed, the pressure measurement during normal operation may be inaccurate.

AFFECTED PRODUCT

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Model	Identification Number
794 AC	MN500052-00056

PARTS NEEDED

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Qty	Part Number	Description
3	5160957	GAUGE-PRESSURE
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 8% 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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Replace the three 0-1000 psi pressure gauges inside the hydraulic enclosure with 0-2000 psi pressure gauges. Refer to the Service Manual if/as necessary and see Service Magazine M0078127 to replace the gauges.

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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%
0-30000 hrs, 0-48 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%