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 only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS0699" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use " Z" as the SIMS Description Code.
NOTE: Although this Program is to be administered as described above on the Affected Product, parts should be removed from parts stock as soon as possible.
Termination Date
August 31, 1996Problem
The existing drive line yokes can fail on certain D20D, D25D, D30D, D40D, D250D, D300D, D350D, and D400D Articulated Trucks. New yokes can be installed to increase their service life.
Affected Product
Model & Identification Number
Group 1
D20D (9MG1-84)
D250D (6NG1-164)
D300D (5MG187-190)
Group 2
D300D (5MG1-186)
Group 3
D350D (9RF1-349)
D400D (8TF1-600)
Group 4
D25D (1HK327-339)
D40D (2JJ1-90)
Group 5
D350D (9RF350-460)
D400D (8TF601-637)
Group 6
D25D (1HK1-326)
D30D (3AJ1-304)
Parts Needed
Group 1
- 1 - 2U9433 Yoke (rear axle)
Group 2
Group 3
Group 4
- 1 - 7U7829 Yoke Assembly (transfer gear group)
Group 5
- 2 - 2U9428 Yoke Assembly (center & rear axles)
Group 6
Action Required
Parts Stock
Remove all 5U6277, 6U0333, and 7U4826 Yokes from parts stock.
Affected Product
Refer to the procedures in the Service Manual. Remove the existing yokes and install the new ones.
Service Claim Allowances
Parts Stock
Submit one claim for all 5U6277, 6U0333, and 7U4826 Yokes removed from parts stock.
Affected Product
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.