GUARD AS 1995816 - Caterpillar

Caterpillar: Confidential Yellow
PSP FOR TRANSMISSION & STEERING CLUTCH SEAL RINGS ON CERTAIN D8N, D9L, D9N, D10N, D11N TRACTORS - MAILED US AND CANADA, CAC O, COFA, CFEL, COSA
  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-194 A-94 AU-122 E-83 O-123 3150, 4100 PS4285 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 "PS4285" as Part Number, "7755" as Group Number, and "96" as Description Code. Seals made of the former material have already been removed from dealer parts stock. See the Service Letter dated September 3, 1988 - PI7200. Termination Date
December 31, 1989
Problem
Seals made of new material have a longer service life in the transmission and steering clutches on certain D8N, D9L, D9N, D10N, and D11N Tractors.
Affected Product
Vehicle identification numbers are approximate. Refer to the effective transmission serial number where provided. Model Identification Number Rework Steering Clutches D9N 1JD674-1321, 1324, 1325, 1341 D9L 14Y75435-75457 D10N 2YD323-651, 653, 655, 656, 692, 693 D11N 74Z323-513, 519-522 Rework Transmission D8N - Equipped