HEAD A 7N0856 - Caterpillar

Caterpillar: Confidential Yellow
PSP FOR OIL LEAKAGE AROUND TRANSMISSION CONTROL CABLE ON D3B TRACTORS, 910, 931B LOADERS, AND IT12 INTEGRATED TOOLCARRIERS EQU IPPED WITH 3 X 3 TRANSMIISSIONS - MAILED TO US AND CANADA, CACO, 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.
PRODUCT SUPPORT PROGRAM FOR OIL LEAKAGE AROUND TRANSMISSION CONTROL CABLE ON D3B TRACTORS, 910 AND 931B LOADERS AND IT12 INTEGRATED TOOL CARRIERS EQUIPPED WITH 3 X 3 TRANSMISSIONS, 3156, PS4106 U-134 A-56 AU-98 C-130 E-73 O-96 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 "PS4106" as Part Number and "7755" as Group Number. Termination Date
December 31, 1987
Problem
Oil can leak out around the transmission control cables on some of the Affected Product. The oil leakage may be caused by a suction action of the control cable.
Affected Product
Model Identification Number D3B 27Y1 - 4530 28Y1 - 1850 931B 29Y1 - 2150 30Y1 - 482 910 41Y1 - 2800 IT12 4NC1 - 890
Parts Needed
none
Action Required
A flat surface and a groove can be machined on the cable assembly to prevent the suction action. Remove and discard the seal from the control lever end of the cable assembly. Machine the groove and flat on the transmission end of the cable as shown. Illustration 1 Location Of The Seal To Be Removed (SEE ILLUSTRATION) Illustration 2 Dimensions For The Grove And Flat (SEE ILLUSTRATION) WARRANTY ALLOWANCES (SEE ILLUSTRATION)
Parts Disposition
not applicable