PSP FOR UPDATING THE GOVERNOR SHUTOFF GROUP ON CERTAIN 3406 INDUSTRIAL ENGINES (PCTA) EQUIPPED WITH ENERGIZE TO RUN FUEL SHU TOFF SOLENOIDS - PS4563 - MAILED US AND CANADA, COFA, CFEL, COSA
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PSP FOR UPDATING THE GOVERNOR SHUTOFF GROUP ON CERTAIN 3406 INDUSTRIAL ENGINES (PCTA) EQUIPPED WITH ENERGIZE TO RUN FUEL SHU TOFF SOLENOIDS - PS4563 - MAILED US AND CANADA, COFA, CFEL, COSA
NOTE: 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-255 AU-160 E-156 O-196 1259 PS4563 Revised 01/10/91 to correct part number error. Part number after * should be 7W6551 and not 6W6551 as listed. NOTE: 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 "PS4563" as Part Number, "7755" as Group Number, and "96" as Description Code.
Termination Date
December 31, 1991
Problem
Governor damage may occur on certain 3406 Industrial Engines (PCTA) equipped with a 7W6551 Shutoff Solenoid (Energize To Run). Repeated shutdown cycles may eventually fatigue the flange on the 8M8739 Bolt or cause damage to other governor components.
Affected Product
Model Identification Number 3406* 90U19726-19881 * If equipped with a 7W6551 Shutoff Solenoid. (Energize To Run)
Parts Needed
2 - 4B9365 Bolt 1 - 7E6073 Bolt 1 - 7E8699 Cover 1 - 4J8265 Nut 1 - 6L1597 Gasket 1 - 5M2894 Washer
Action Required
See the attached procedure.
Service Claim Allowances
Product Caterpillar Dealer Suggested Customer Suggested smu/age Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. ***** Before Failure Only ***** 0-10,000 100% 1 0 0 0 0 NOTE: This is a 1-hour job. ***** After Failure Only ***** 0-2000 100% 1 0 0 0 0 2001-5000 33 1/3% .5 0 0 50% .5 NOTE: This is a 1-hour job.
Parts Disposition
Any parts removed (with the exception of cores used for Caterpillar Remanufactured parts) can be rendered useless and scrapped immediately upon completion of the repair. Rework Procedure Remove the fuel shutoff solenoid and the thin cover opposite the solenoid from the governor housing. Install the new parts as shown in the illustration and perform the following adjustment procedure. ****** IMAGE: SEBE4477.00001.001 CAPTION: ****** IMAGE: SEBE4477.00001.002 CAPTION: Adjustment Procedure With the solenoid removed, use the manual shutoff lever to rotate the manual shutoff shaft to the maximum position in the shutoff direction. While holding the shaft in this position, adjust the 7E6073 Bolt (solenoid stop bolt) clockwise until the headed end of the bolt contacts the internal shutoff lever. Turn the 7E6073 Bolt in an additional 3/4 +/- 1/4 of a turn. Tighten the 4J8265 Nut to lock the solenoid stop bolt in this position. Install the seal wire and the dealers governor seal. NOTE: The above procedure should be followed each time the solenoid or the adjustable bolt stop and cover are removed from the governor.
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