Rear Wheel Bearings Need To Be Adjusted On Certain 776D Tractors And 777D Trucks Caterpillar

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 must be administered as soon as possible. When reporting the repair, use "PI3990" 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 "PI3990" 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

Termination Date

Problem

The rear wheel bearings may not have been adjusted properly on certain 776D Tractors and 777D Trucks.

Affected Product
Model & Identification Number

776D (5ER76, 5ER84, 5ER85)

777D (3PR78-318, 3PR320)

Parts Needed

Dealers will need to order parts for this Program.

2 - 9D2426 Shim

Action Required

With the exception of Step(s) 5, Refer to the Service Manual Specifications, SENR6911, May 96 or the Service Magazine article of 1/10/94 titled "New Rear Bearing Adjustment Procedure".

In Step(s) 5, after you have loosened the 6 bolts one full revolution (360 degrees), rotate the wheel two full revolutions.

Owner Notification

U.S. and Canadian owners will receive the attached Owner Notification.

Service Claim Allowances

Parts Disposition

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

NOTE: MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.

Attach.

(1-Owner Notification)

Copy Of Owner Notification For U.S. And Canadian Owners