PRODUCT SUPPORT PROGRAM FOR REPLACING TRIP UNIT ON CERTAIN CIRCUIT BREAKERS INSTALLED ON 3512, 3516, 3516B, AND 3516C GENERATOR SETS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING TRIP UNIT ON CERTAIN CIRCUIT BREAKERS INSTALLED ON 3512, 3516, 3516B, AND 3516C GENERATOR SETS

Usage:

REBE2849-00

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03Jan2008

U-7

A-4

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR REPLACING TRIP UNIT ON CERTAIN CIRCUIT BREAKERS INSTALLED ON 3512, 3516, 3516B, AND 3516C GENERATOR SETS
4461 1420		PS42593

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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 "PS42593" 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

31Jan2010

PROBLEM

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Some existing trip units are susceptible to high frequency electrical noise and transient bursts during the open/close operation. This is due to an issue in the breaker's close and latch feature, which can perform an invalid operation if it receives the wrong type of signal. The high peaks caused by noise and bursts can create a false fault condition, causing the breaker to open unnecessarily.

AFFECTED PRODUCT

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Model	Identification Number
3512	SBG00153
3516	ZAL00169, 208
3516B	PBR00152, 154-160, 195, 207-209, 219, 440 ZAP00117, 126-128, 151, 159, 161-163, 234, 238, 244, 248, 393, 406, 475, 478, 481, 487, 490, 493-494, 498, 523, 542, 556, 559, 564-566, 690-691
3516C	SBJ00152, 156-157, 160-161, 163-165, 168-170, 172, 176-177, 181, 184, 190, 206-207, 209-210, 221, 231, 253-254, 286, 291, 298, 315-318, 320-321, 355, 367-368, 400, 402, 404, 406, 408-409, 436 SBK00238, 240-243, 254-260, 263-267, 270-276, 280, 299

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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Refer to attached Rework Procedure.

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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%
0-9999 hrs, 0-9999 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 0.5-hour job
An additional 4 hours of labor will be allowed in the warranty claim for dealers that have a suspected unit in their possession.

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PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Rework Procedure

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Email Electric Power Customer Service at EP_CUSTOMER_SERVICE@cat.com if dealer has suspect unit in possession. Please refer to Images 1.1.1 and 1.1.2 for list of suspect circuit breaker serial numbers.

Image1.1.1

Image1.1.2

Images 1.2.1 and 1.2.2 show pictures of a typical circuit breaker label; identify label on your machine and obtain the following information ? to be included in your email:

- Generator Package Serial Number
- Circuit Breaker Part Number
- Circuit Breaker Serial Number
- Address to which replacement trip unit should be shipped

Image1.2.1

Image1.2.2

Image 1.2.1 Comments:

1. CAT Part Number
2. Circuit Breaker Serial Number

Image 1.2.2 Comments:

1. CAT Part Number
2. Circuit Breaker Part Number

After receiving replacement trip unit:

Refer to appropriate Service Manual.
Install replacement trip unit.