PRODUCT SUPPORT PROGRAM FOR REWORKING WIRING HARNESS 291-4361 ON THE ENGINE WIRING GROUP 339-8301 AT THE ECM CONNECTOR FOR ETHER START OPERATION ON CERTAIN 521B, 522B, 541 SERIES II, AND 552 SERIES II TRACK FELLER BUNCHERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING WIRING HARNESS 291-4361 ON THE ENGINE WIRING GROUP 339-8301 AT THE ECM CONNECTOR FOR ETHER START OPERATION ON CERTAIN 521B, 522B, 541 SERIES II, AND 552 SERIES II TRACK FELLER BUNCHERS

Usage:

TEBE1367-01

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21May2014

(Revised 29May2014)

U-286

A-213

D-254

O-247

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR REWORKING WIRING HARNESS 291-4361 ON THE ENGINE WIRING GROUP 339-8301 AT THE ECM CONNECTOR FOR ETHER START OPERATION ON CERTAIN 521B, 522B, 541 SERIES II, AND 552 SERIES II TRACK FELLER BUNCHERS
1408 1403		PS44313

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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 "PS44313" 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 21May2014 Service Letter. Changes have been made to the Affected Product and the Service Claim Allowances.

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TERMINATION DATE

31May2016

PROBLEM

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The existing 291-4361 Wiring Harness at the ether start connector can cause ether start functionality concerns on certain 521B, 522B, 541 Series II, and 552 Series II Track Feller Bunchers. If the existing ether start does not function correctly or causes error codes it may be associated with the way the wiring harness at the ECM connector is wired. It has been determined on certain models the pin connector at pin 21 for the ether injector solenoid (start aid) needs to be moved to pin 20.

AFFECTED PRODUCT

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Model	Identification Number
521B	F7B00250-00278
522B	F7C00210-00254
541B	F7D00190-00238
552B	F7G00170-00185

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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Refer to the 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%
0-4000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 1.0-hour job

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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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1. Remove the Pin Out at the 291-4361 Wiring Harness at the 160-7689 ECM Plug Connector at Pin #21 for Wire #311-WH, for the Ether Injector Solenoid (Start Aid), to Pin #20. Re-use of the 126-1768 Socket Connector may be required.

Note: This change affects both the ZTS and FTS machine for the serial numbers listed. All machines built after these serial numbers will have the harnesses changed.