DRIVER-VALVE 9U6897 - Caterpillar

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.
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 "PS4535" 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
July 31, 1999Problem
Repair crossed wires in the chassis wiring harness to eliminate possible overheating problems on certain 834B and 836 Compactors. Two wires in the 1356373/">135-6373 chassis wiring harness may not be installed in the correct pin locations. This situation could cause incorrect readings of the hydraulic and coolant temperatures leading to a possible overheating problem with those systems. These pin locations need to be inspected and re-installed in the correct locations.
Affected Product
Model & Identification Number
834B (7BR597-621, 7BR623-624, 7BR627-639, 7BR643-645)
836 (7FR264-355)
Parts Needed
No parts are needed for the rework.
Action Required
Remove the cover panel on the rear of the cab. Disconnect the 40 pin. Connector of the 1356373 Wire Harness at the right rear of the cab. The 404-YL wire needs to be removed from pin location 31 and moved to pin location 19. The f706-PU wire needs to be removed from the pin location 19 and moved to pin location 31.
Service Claim Allowances
This is a 1-hour job.
Dealers may claim up to $100 U.S. for travel expenses.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.