PIN 4I4977 - Caterpillar

Caterpillar: Confidential Yellow
SAFETY - THE WHEEL RIM NUTS NEED TO BE TIGHTENED ON CERTAIN IT18 AND IT28 TOOLCARRIERS; AND ON CERTAIN 926 AND 916 LOADERS - P I1202 - MAILED US AND CANADA, CACO
  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.
July 11, 1992 U-97 A-71 SAFETY THE WHEEL RIM NUTS NEED TO BE TIGHTENED ON CERTAIN IT18 AND IT28 TOOLCARRIERS; AND ON CERTAIN 926 AND 916 LOADERS 4202 PI1202 This Program must be administered as soon as possible. When reporting the repair, use "PI1202" 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 "PI1202" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
Problem
The wheel rim mounting nuts need to be tightened to a torque of 475 +/- 50 N.m (350 +/- 37 lb ft) on certain IT18 and IT28 Toolcarriers; and on certain 926 and 916 Loaders.
Affected Product
Model Identification Number IT18 4ZD1218-1220, 1223, 1227-1228, 1234, 1238 IT28 1HF2334, 2336-2337, 2340-2350, 2353-2358, 2360-2363 2365, 2368, 2373, 2381, 2384-2386 2388-2389, 2396, 2398, 2404 926 94Z3766-3770, 3772, 3774-3776, 3782-3784, 3786 3790-3792, 3794- 3801 916 2XB2022, 2024-2028
Parts Needed
Not Applicable.
Action Required
Refer to the Service Manual. Tighten the wheel rim nuts to a torque of 475 +/- 50 N.m (350 +/- 37 lb ft).
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
Caterpillar