PIN 1590962 - Caterpillar

Caterpillar: Confidential Yellow
PSP FOR ROCKER ARM BUTTON FAILURES ON CERTAIN 3306, 3608, 3612, AND 3616 ENGINES - PS0374 - MAILED US AND CANADA, CFEL, LIM ITED CACO, LIMITED COFA, LIMITED BRAZIL, LIMITED 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-88 A-64.1 AU-58.1 B-13.2 E-43 O-58.2 1123 PS0374 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 "PS0374" as Part Number, "7755" as Group Number, and "96" as Description Code. Although products are to be administered as described above, parts stock should be purged immediately. Termination Date
April 30, 1990
Problem
The 4W9294 Rocker Arm Button may break and fall off the fuel injector rocker arm.
Affected Product
Model Identification Number 3606 8RB306-335 3608 6MC246-264 3612 9RC16-46 3616 1PD18-23
Parts Needed
1 - 0R5738 Fuel Injector Group or 1 - 0R5510 Fuel Injector Group 1 - 7W7226 Rocker Arm Assembly* 1 - 619455 Seal - O-ring 1 - 6V3922 Seal - O-ring 1 - 8T0568 Seal - O-ring 2 - 6V1179 Seal - O-ring 1 - 4W9294 Button * Only for use on failed cylinders. Not needed for cylinders exhibiting wear upon inspection. (See below)
Action Required
Parts Stock Remove all 7C3854, 7C7455, 0R5510, and 0R5738 Fuel Injector Groups from parts stock that