SHAFT-STUB 4P5235 - Caterpillar

Check the governor serial number beforeyou replace the Stem Assembly. This program only applies to the serialnumbers in the above chart.See the attached Rework Procedure.OWNER NOTIFICATION
U.S. and Canadian owners will receive the attachedOwner Notification.SERVICE CLAIM ALLOWANCES
***** Parts Stock *****Submit one claim for all 101-8238 and 6I3843CONTROL GROUPS that have been reworked in parts stock.***** Affected Product *****
Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs.
100% 2.0 0 0 0 0
This is a 2.0- hour job. U.S. and Canadian Dealers Only - Eligibledealers may enter a Type 2 SIMS ReportPARTS DISPOSITION
***** Parts Stock *****Handle the parts in accordance with your WarrantyBulletin on warranty parts handling.***** Affected Product *****Return the governor if the carbide tip hasfallen out to:CATERPILLAR INC.
ATTN: CLAIMSROOM, RANDY WHERLEY
STATE ROAD 26 E.
LAFAYETTE, IN 47905Handle the parts in accordance with your WarrantyBulletin on warranty parts handling.MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM ASSOON AS POSSIBLE.Attach. (1-Owner Notification) (2-ReworkProcedure)COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS
XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999SAFETY - PRODUCT IMPROVEMENT PROGRAM FOR REPAIRINGTHE FUEL CONTROL ASSEMBLY ON SOME 3161 GOVERNORSMODELS INVOLVED ? Certain 3500 EnginesDear Caterpillar Product Owner:A new stem assembly needs to be installed inthe governor on the products listed below. Some stem assemblies may separateand cause the smoke limiter to not perform correctly and cause the engineto operate at an uncontrolled speed. If the stem assembly has separateda new governor will be installed on your engine. You will not be chargedfor the service performed.Contact your local Caterpillar dealer immediatelyto schedule this service. The dealer will advise you of the time requiredto complete this service. Please refer the dealer to their Service Letterdated August 29, 2004 when scheduling this service.We regret the inconvenience this may causeyou, but urge you to have this service performed as soon as possible toprevent unscheduled downtime.Caterpillar Inc.
Identification #(s)Attached to August 29, 2004 Service LetterRework Procedure3161 Stem Assembly Replacement Procedure
Loosen and remove the three bolts on the fuellimiter cover and remove the cover from the governor.
Illustration 1
Remove spring seat and spring.
Illustration 2
Remove the stem assembly by lifting straight up.Inspect the carbide insert.
If the insert is cracked or missing,it is likely that the part has fallen into the governor creating a potentialfailure mode. Reassemble the unit and return the entire governor to Caterpillar. Illustration 3
Visually inspect the new stem assembly beforeinstallation. There should be a ring around the carbide tip indicatinga strong copper braze.
Illustration 4 Illustration 5
Insert the new stem assembly until the rubberseats on the housing.
Illustration 6
Place the spring in the center of the stem assembly.
Illustration 7
Set the spring seat in the center of the spring.
The orientation of the spring seatshould have the concave portion facing downward within the spring center. Illustration 8
Align the cover and install the three cover bolts.Torque the bolts to 90 (+/-5) in-lbs.
Illustration 9