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 "PS4813" 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.
NOTE: This Revised Service Letter replaces the July 23, 1992 (Revised August 1992) Service Letter. Changes have been made to the Affected Product.
Termination Date
July 31, 1993Problem
The splines on the existing yoke located at the rear of the driveshaft may show more wear than is desirable on certain 950F Loaders.
Affected Product
Model & Identification Number
950F (7ZF1-910; 5PG1-19; 6YG1-1586; 4DJ1-1045; 6LJ1-177)
Parts Needed
- 1 - 7I3893 Yoke
Action Required
Replace the existing 9C4090 Yoke-Rear Driveshaft with a new 713893 Yoke.
NOTE: For Affected Product with an Identification Number Prefix of 6YG, the 7I3893 Yoke may replace either a 9C4090 or 6C7406 Rear Yoke.
If the splines are excessively worn, the axle oil may have been contaminated and needs to be replaced. See the Service Manual.
Service Claim Allowances
NOTE: This is a 1-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.