PRODUCT SUPPORT PROGRAM FOR INSTALLING AN A/C ARC SUPPRESSOR DIODE ON CERTAIN 559C, 579C, 2384C, AND 2484C KNUCKLEBOOM LOADERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSTALLING AN A/C ARC SUPPRESSOR DIODE ON CERTAIN 559C, 579C, 2384C, AND 2484C KNUCKLEBOOM LOADERS

Usage:

TEBE5052-00

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03Aug2016

U-408

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Before/After	PRODUCT SUPPORT PROGRAM FOR INSTALLING AN A/C ARC SUPPRESSOR DIODE ON CERTAIN 559C, 579C, 2384C, AND 2484C KNUCKLEBOOM LOADERS
7304 1408 7320 7337 7309		PS45181

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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 "PS45181" 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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TERMINATION DATE

31Aug2018

PROBLEM

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During manufacturing, the air conditioning arc suppressor diode was not installed on certain 559C, 579C, 2384C, and 2484C Knuckleboom Loaders. The absence of the diode leaves the thermostat without surge protection, making the thermostat susceptible to failure. The thermostat completes the ground circuit for the A/C compressor. When it fails, the compressor will not engage to provide cooling to the cab.

AFFECTED PRODUCT

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Model	Identification Number
2384C	KB600300-00381
2484C	KB700300-00312
559C	KB400100-00390
579C	KB500101-00146

PARTS NEEDED

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Qty	Part Number	Description
1	1893158	SUPPRESSOR-ARC
1	4629156	THERMOSTAT (After Failure Only)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 9% 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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For a Before Failure Repair - For machines in for service, or when visiting a machine, check for, and if needed, install a new 189-3158 Arc Suppressor Diode to prevent thermostat failure. Refer to the electrical schematic for component location.

For an After Failure Repair - If the thermostat has failed, replace the existing thermostat with a new 462-9156 Thermostat. After installation of the 462-9156 Thermostat, install a new 189-3158 Arc Suppressor Diode. Refer to the electrical schematic for component location.

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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%
0-6000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%