FILTER 1085959 - Caterpillar

Caterpillar: Confidential Yellow
PRIORITY - THE CENTER DRIVE SHAFT BEARINGS NEED TO BE INSPECTED FOR CORRECT ADJUSTMENT ON CERTAIN 518 AND 528 SKI DDERS - PI3479 - MAILED US AND CANADA, CACO, COSA, LIMITED COFA
  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.
U-168 A-115 AU-108.1 O-128 PRIORITY 3253 PI3479 COMPLETION DATE Termination Date
February 28, 1991 August 31, 1991
Problem
The bearings on the center drive shaft, inside the oscillating hitch, may not have been adjusted correctly. This can result in a low hour bearing and shaft failure with possible damage to the hitch.
Affected Product
Model Identification Number 518 94U2257-2302 95U2682-2773, 2775-2781, 2783-2786, 2788 528 96C720-740 97C376-387
Parts Needed
Dealers will need to order parts for this Program. ***** 518 Skidders ***** 1 - 7K5425 Shim 1 - 0S1922 Lock ***** 528 Skidders ***** 1 - 4K7294 Lock 1 - 8K5892 Shim
Action Required
See the attached procedure.
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
***** Machines Being Checked In The Field ***** Caterpillar Dealer Suggested