Usage:
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 can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS8959" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
Termination Date
July 31, 1998Problem
An improved air ride seat is now available for replacing earlier mechanical or air ride seats on older Challenger 65, 70, 75 and 85 Tractors. The new seat has improved comfort and more serviceable parts than the earlier design. This program will offer the improved seat at a reduced price.
Affected Product
Model & Identification Number
65/54B (7YC1-99999)
65C (2ZJ1-1691, 2ZJ1694, 2ZJ1702, 2ZJ1715, 2ZJ1722, 2ZJ1724, 2ZJ1732, 2ZJ1743, 2ZJ1746-1749 , 2ZJ1759)
70C (2YL1-1281, 2YL1283, 2YL1287, 2YL1291)
75 (4CJ1-99999)
75C (4KK1-1947, 4KK1951, 4KK1953, 4KK1959, 4KK1971, 4KK1975, 4KK1976, 4KK1997, 4KK2005 )
85C (9TK1-1467, 9TK1496, 9TK1520)
Parts Needed
- 4 - 5P1075 Washer
- 4 - 5S7379 Bolt
- 8 - 8T5360 Washer
- 8 - 8T5360 Washer
- 4 - 7X0447 Nut
- 1 - 1173028 Bracket Assembly
- 1 - 1176139 Harness Assembly
- 1 - 1444541 Seat Assembly
- 4 - 5S7379 Bolt
Action Required
Replace the existing seat with the new 1444541 Seat and mounting hardware. Refer to Illustration 1 for location of parts.
NOTE: Wiring modifications needed in Challenger 65, 65B and 75 Tractors can be found in Service Magazine, July 18, 1994, Page 1, "Air Ride Seats Suspension Retrofit".
Illustration 1
Service Claim Allowances
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.