WASHER 5V0353 - Caterpillar

SEBE8389-04 June 2, 2003
(Revised May 2005)
U-137
A-93
D-99
O-116
Afterfailure only PRODUCT SUPPORT PROGRAM FOR REPLACINGCYLINDER HEADS ON CERTAIN G3412 AND G3412C SPARK IGNITED ENGINES
1105 PS50580
This Program can only be administeredafter a failure occurs. The decision whether to apply the Program is madeby the dealer. When reporting the repair, use "PS50580" as the Part numberand "7755" as the Group Number. Use "96" as the Warranty Claim DescriptionCode and use "Z" as the SIMS Description 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 June 2, 2003 (Revised November 2003) Service Letter. Changes have beenmade to the Affected Product.TERMINATION DATE
June 30, 2005PROBLEM
G3412 cylinder heads have been experiencing shortexhaust valve life due to excessive wear, radial cracks, and/or valve stemfracture.AFFECTED PRODUCT
Model Identification Number
***Group 1***
G3412 7DB1-17833NK1-153
***Group 2 & 3***
G3412C 6ZM1-499*KAP1-1535KR1-4158LW1-226*
*** Group 4 ***
G3412 7DB1784-1814
G3412C 6ZM500-538KAP154-210* Some of the engines in this serial numberrange may be equipped with EIS CSA ignition option. Dealers need to determineif engine is equipped with CSA ignition before ordering parts. Group 2 engines are equipped with EISignition only and should order parts listed under Group 2 in Parts Needed. Group 3 engines are equipped with EISCSA ignition and should order parts listed under Group 3 in Parts Needed.PARTS NEEDED
Qty
Part Number Description
***Group 1***
1 10R1134 HEAD GP-CYL
1 2261796 CONVERSION KIT
***Group 2***
1 10R1134 HEAD GP-CYL
1 2261797 CONVERSION KIT
***Group 3***
1 10R1134 HEAD GP-CYL
1 2261798 CONVERSION KIT
*** Group 4 ***
1 2269417 GASKET KIT Group 3 engines are those epuippedwith EIS CSA igintion. Dealers need to determine if engine is equippedwith CSA ignition or not before ordering parts. If engine serial number fall into Group4 serial number range a cylinder head gasket kit is all that is requiredto install the new cylinder head.ACTION REQUIRED
Replace current cylinder head with the improvedcylinder head and peripheral hardware. Replacement of the cylinder headwould take place if the current cylinder head experiences exhaust valverecession beyond 0.070", or radial cracking of the exhaust valve is observed,or if an exhaust valve stem fractures and the valve head drops into thecylinder. If a failure occurs on one cylinder head only replace that cylinderhead. The kits are set up to rework one cylinder head at a time so if bothcylinder heads need replacing two kits will need to be ordered.SERVICE CLAIM ALLOWANCES
Part smu Caterpillar