Usage:
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.
NOTE: This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS8680" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
Termination Date
June 30, 1998Problem
There is a software bug in the CAT Data Link code for the EMCPII Generator Set Control. When a CCM, Customer Communications Module, is used with the Windows software, the bug will cause the engine to shutdown shortly after starting. This situation only affects the 1236004 Genset Control used with a small group of 3500 Series B Engines.
Affected Product
Model & Identification Number
3508B (4GM129-135, 4GM137-139 6PN162-178 , 6PN180-185, 6PN187-193, 6PN195-197)
3512B (6WN76, 6WN77, 6WN81-86, 6WN88-94, 6WN96 8RM113-127 , 8RM129-135)
3516B (7RN210-227, 7RN230-238, 7RN240-244, 7RN246-252, 7RN281, 7RN287 6HN104 , 6HN105, 6HN108, 6HN109, 6HN111)
Parts Needed
- 1 - 1363870 Control Group
Action Required
Replace the 1236004 Genset Control with the 1363870 Genset Control on product that is used or will be used with the CCM and the Windows based CCM software.
Service Claim Allowances
NOTE: This is a 2-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.