0307778 JOHNSON GASKET, Carburetor body

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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 3616 1PD18-23
Parts Needed
Note: Quantities Per Cylinder ***** Parts for use on failed cylinders only ***** 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 - 7E7202 Button 1 - 7E7203 Insert ***** Parts for use on cylinders showing wear rings ***** 1 - 7E7202 Button 1 - 7E7203 Insert 1 - 6V3922 Seal - O-ring
Action Required
If a button failure occurs, install the parts listed for use on failed cylinders only. Inspect the buttons on the other cylinders for a circular wear pattern. If any of the other buttons have a circular wear pattern resembling tree growth rings, replace the buttons, inserts and O-ring Seals for those cylinders showing wear. The insert is a press fit in the rocker arm. A press will be required to install the new inserts in the rocker arms.
Service Claim Allowances
Product Caterpillar Dealer Suggested Customer Suggested smu Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. (C/L) (Sell) (C/L) (Sell) 3606 Engines 0-5000 100% 5 0 0 0 0 3608 Engines 0-5000 100% 6 0 0 0 0 3612 Engines 0-5000 100% 8 0 0 0 0 3616 Engines 0-5000 100% 9 0 0 0 0 This is a 5 to 9 hour job.
Parts Disposition
All parts removed (with the exception of cores used for Caterpillar Remanufactured parts) should be rendered useless and scrapped immediately upon completion of the repair.