Product Support Program For Reworking The Pivot Shafts And Bearings Due To Premature Failure On Certain 953C And 963B Track Type Loaders Caterpillar

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 "PS5594" 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.

Termination Date

Problem

The pivot shafts and bearings need to be replaced due to premature failure on certain 953C and 963B Track Type Loaders. The 3J9511, 7J2604 and 7P6348 Bearings, used in pivot shafts, may have excessive micro hardness and need to be replaced. This has resulted in high wear of the pivot shafts at low hours. The first indication of high wear is often leakage of the pivot shaft seal.

Affected Product
Model & Identification Number

Group 1 - 953C

953C (2ZN200-2500)

Group 2 - 963B

963B (9BL500-3500)

Parts Needed

Group 1 - 953C

1 - 8G2991 Seal

1 - 3J9511 Bearing - Sleeve

1 - 7J2604 Bearing - Sleeve

1 - 3W7551 Shaft Assembly

Group 2 - 963B

1 - 7J2604 Bearing - Sleeve

1 - 7P6348 Bearing

1 - 3W7968 Seal - Football

1 - 3W8155 Shaft Assembly

Action Required

If a failure of the pivot shaft bearing occurs, replace the damaged parts. Inspect the other side for seal leakage. If leakage is found, there is a high probability the other side is also beginning to fail and should also be repaired. The parts listed above are the Parts Needed to repair one side only. If the second side is found to be leaking, this quantity of parts will also be needed for the second side.

Service Claim Allowances

NOTE: This is a 9-hour job for one side. This is a 18-hour job for both sides.

Parts Disposition

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