BOLT 1512900 - Caterpillar

SEBE9304-01 August 12, 2005
(Revised August 2005)
U-272
A-197
D-210
O-224
Priority PRODUCT IMPROVEMENT PROGRAM FOR INSTALLINGTHE SPEED ADJUST POTENTIOMETER ON CERTAIN 3456 GENERATOR SETS
7751 PI30845
This Program must be administered assoon as possible. When reporting the repair, use "PI30845" as the Partnumber and "7751" as the Group Number, "56" as the Warranty Claim DescriptionCode and "T" as the SIMS Description Code. Exception: If the repair isdone after failure, use "PI30845" as the Part Number, "7751" as the GroupNumber, "96" as the Warranty Claim Description Code, and "Z" as the SIMSDescription Code. The information supplied in this serviceletter may not be valid after the termination date of this program. Donot perform the work outlined in this Service Letter after the terminationdate without first contacting your Caterpillar product analyst. This Revised Service Letter replacesthe August 12, 2005 Service Letter. Changes have been made to the Distributionof the letter.
COMPLETION DATE
TERMINATION DATE
February 28, 2006 August 31, 2006PROBLEM
The speed adjust potentiometer may bemissing on certain Griffin packaged 3456 common design generator sets resultingin the generator set failing to start after the cranking cycle or the generatorset running at the incorrect speed.AFFECTED PRODUCT
Model Identification Number
3456 C3G128-129,131, 137, 150-153, 157, 159-163, 170, 178-181, 183, 191C4G126-163PARTS NEEDED
Qty
Part Number Description
1 7E1246 POTENTIOMETER
1 4W5972 KNOB
1 7C4550 SEAL-ROTARY SHAFTACTION REQUIRED
See the attached Rework Procedure.OWNER NOTIFICATION
U.S. and Canadian owners will receive the attachedOwner Notification.SERVICE CLAIM ALLOWANCES
Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs.
100% 1.0 0 0 0 0
This is a 1.0 hour job. U.S. and Canadian Dealers Only- Eligible dealers may enter a Type 2 SIMS ReportPARTS DISPOSITION
Handle the parts in accordance with your WarrantyBulletin on warranty parts handling.MAKE EVERY EFFORT TO COMPLETE THIS PROGRAMAS SOON AS POSSIBLE.Attach. (1-Owner Notification)
(2-Rework Procedure)COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS
XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999PRIORITY - PRODUCT IMPROVEMENT PROGRAM FORINSTALLING THE SPEED ADJUST POTENTIOMETERMODELS INVOLVED - CERTAIN 3456 GENERATOR SETSDear Caterpillar Product Owner:A new Speed Adjust Potentiometer needs to beinstalled on the products listed below. You will not be charged for theservice 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 12, 2005 when scheduling this service.We regret the inconvenience this may causeyou and urge you to have this service performed as soon as possible toprevent unscheduled downtime.Caterpillar Inc.
Identification #(s)Attached to August 12, 2005 Service LetterRework ProcedureVerify the speed adjust potentiometer is missingfrom the generator set control panel cover. See Illustration 1. Illustration 1If the speed adjust potentiometer is missing, installpotentiometer part number 7E-1246, seal-rotary shaft part number 7C4550,and knob part number 4W5972 as shown in Illustrations 1 & 2. Attachmentwires will be found in the main harness. Wire #44 is red, wire #43 is blue,and wire #42 is yellow. With reference to wiring diagram 234-3202 for EMCPIIor wiring diagram 235-0745 for EMCPII+, solder wire #44 (red) to potentiometerterminal 1, solder wire #43 (blue) to potentiometer terminal 2, and solderwire #42 (yellow) to potentiometer terminal 3 as shown in Illustration2 and Diagram 1. Illustration 2 Illustration 3Tools and materials needed:adjustable wrench, hex wrench set, standard jeweler's screwdriver, wirestripper, 100 watt soldering iron, rosin core solder.