09450-05640 PUMP ASSY, INJECTI Denso Cross

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PSP FOR INSTALLING NEW ROCKER ARM BUTTONS THAT OPERATE WITH INJECTOR TAPPETS THAT ARE NOT FLAT ON CERTAIN 3606, 3608, 3612 AND 3616 ENGINES - PS0417 - MAILED US AND CANADA, CACO, COFA, BRAZIL, LIMITED CFEL, 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-232 A-149 AU-150 B-38 E-99.1 O-142.1 1123 PS0417 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 "PS0417" as Part Number, "7755" as Group Number, and "96" as Description Code. This Program cancels and replaces the April 24, 1989 Service Letter - PS0374. Termination Date
December 31, 1991
Problem
The 4W9294 Rocker Arm Button may break and fall off the fuel injector rocker arm. New buttons can be installed that will operate with injector tappets that are not flat. It is no longer necessary to change injectors when circular wear patterns show up on the rocker arm buttons.
Affected Product
Model Identification Number 3606 8RB306-335 3608 6MC246-264 3612 9RC16-46