GUARD AS 2431656 - 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 must be administered as soon as possible. When reporting the repair, use "PI3696" as the Part Number, "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description Code. Exception: If the repair is done after failure, use "PI3696" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
Completion Date
November 30, 1994Termination Date
May 31, 1995Problem
The 6V2624 Bolts in the differential bearing end cap may fail on certain 990 and 992D Loaders.
Affected Product
Model & Identification Number
990 (7HK68, 7HK71-75, 7HK78-80, 7HK84-86, 7HK92-94, 7HK98, 7HK102-103 05A10310-10312 )
992D (7MJ229-231, 7MJ233-236, 7MJ240, 7MJ242, 7MJ244, 7MJ246-249, 7MJ254, 7MJ257 05A10215-10218 )
Parts Needed
Dealers will need to order parts for this Program.
2 - 2D6506 Seal-O-Ring4 - 4H6730 Seal-O-Ring (Used on 992D, only).4 - 9H0846 Seal-O-Ring (Used on 990, only)8 - 6V2624 BoltAction Required
See the attached rework procedure.
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
This is a 50-hour job.
U.S. and Canadian Dealers Only - Eligible dealers may enter a Type 2 SIMS Report.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
Attach.(1-Owner Notification)(2-Rework Procedure)Copy Of Owner Notification For U.S. And Canadian Owners
Rework Procedure
Front Differential
1. Remove axle bolts and disconnect driveshaft and brake line from front axle housing.2. Drain Oil.