CYLINDER GP-SLAVE 6G3641 - Caterpillar

Caterpillar: Confidential Yellow
PSP FOR REPLACING THE 7W1454 OR 7W1455 ACTUATOR ASSEMBLIES AND 9Y4603 THROTTLE ASSEMBLY ON CERTAIN 3408 SI AND 3412 SI GEN ERATOR SET ENGINES - PS4526 - MAILED US AND CANADA, CFEL, COSA, LIMITED COFA - REVISED 11/90
  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.
(Revised November 1990) U-196 A-136 AU-123.2 E-118 O-152 1903 PS4526 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 "PS4526" as Part Number, "7755" as Group Number, and "96" as Description Code. This Revised Service Letter replaces the September 20, 1990 Service Letter. Changes have been made to better describe the Affected Product. Termination Date
September 30, 1991
Problem
Actuator arm movement can cause linkage and throttle bearing wear to be higher than desired on certain 3408 SI and 3412 SI Generator Set Engines; and on certain 3408 SI and 3412 SI Industrial Engines. A 7E8556 Actuator Assembly and 4P2008 Throttle Assembly can be installed to improve their service life.
Affected Product
Model Identification Number 3408 SI 6NB1-759 3412 SI 7DB1-525 The identification numbers listed above include both Generator Set Engines and Industrial Engines.
Parts Needed
1 - 7E8556 Actuator Assembly 1