VALVE GP-TRANSMISSION CONTROL 3535018 - Caterpillar

Caterpillar: Confidential Yellow
PSP FOR OIL AND/OR COMBUSTION GAS LEAKAGE AT CYLINDER HEAD GASKET ON 776B TRACTORS; 777B, 785, 789 TRUCKS - MAILED US AND CAN ADA, COFA, CACO, LIMTED CFEL
  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 AND/OR COMBUSTION GAS LEAKAGE AT CYLINDER HEAD GASKET ON 776B TRACTORS; 777B, 785, 789 TRUCKS, 1100, PS0316 This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS0316" as Part Number and "7755" as Group Number. Termination Date
December 31, 1988
Problem
The cylinder head gaskets on the above products may develop oil and/or combustion gas leaks. A new cylinder head gasket is now used in production.
Affected Product
Model Identification Number 776 6JC1 - 66 777B 4YC1 - 469 3NF1 - 8 785 8GB1 - 241 789 9ZC1 - 133
Parts Needed
New Head Gaskets (Per Engine) 776B /777B 785 789 16 24 32 2J157 Seal - Valve cover base 16 24 32 2M4453 Seal - Spacer plate 3 3 4 2W752 Gasket-Oil filler/Turbo lines 8 12 16 4W7656 Gasket 4 - 8 5P5700 Seal - Air lines - 4 - 6V3917 Seal - Air lines 2 2 4 7M7273 Gasket - Turbocharger 16 24 32 7N1961 Bolt - Cylinder head 8 12 16 7N4904 Gasket - Exhaust manifold 8 12 16 7N5080 Gasket - Air lines 2 2 4 7N7559 Gasket - Turbo oil lines 2 2 4 7N7628 Gasket - Turbo water lines 2 2 - 7N8875 * Gasket - Turbo oil lines 8 12 16 7W7730 Gasket - Cylinder head 2 2 2 8N1269 Gasket - Upper water lines 32 48 64 8N6862 Seal - Cylinder head 32 48 64 8N6863 Seal - Cylinder head - - - 8N6864 * Plate - Spacer 8 12 16 8N7640 Gasket - Upper water lines 16 24 32 9Y635