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ZEXEL
105411-1750
1054111750
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105411-1750
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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.
This Program can only be administered after a failure occurs (any time the cylinder head has been removed).The decision whether to apply the Program is made by the dealer.When reporting the repair, use "PS5237" as the Part Number and "7755" as the Group Number.Use "96" as the WarrantyClaim Description Code and use "Z" as the SIMS Description Code.
Termination Date
January 31, 1998Problem
The 1159393 Unit Injector Lifter Assembly on some C-10 and C-12 Truck Engines may crack.
Affected Product
Model & Identification Number
C-10 (2PN1125-1979)
C-12 (1YN1294-2426)
Parts Needed
6 - 1159393 Unit Injector Lifter AssembliesAction Required
Some of the rollers may contain a material flaw on the roller surface. The flaw may appear as a faint line or scratch running parallel to the brass roller pin. Refer to Illustration 1.
1. Remove lifter bracket assemblies as outlined in the Disassembly and Assembly Manual, SENR1002-01.2. Replace all six 1159393 Unit Injector Lifter Assemblies.3. Install lifter bracket assemblies and tighten bolts to a torque of 30 N m (25 lb ft).
Illustration 1Service Claim Allowances
Labor Breakdown By Cab Type These codes and times are based on performing this repair with the cylinder head already removed.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
This Program can only be administered after a failure occurs (any time the cylinder head has been removed).The decision whether to apply the Program is made by the dealer.When reporting the repair, use "PS5237" as the Part Number and "7755" as the Group Number.Use "96" as the WarrantyClaim Description Code and use "Z" as the SIMS Description Code.
Termination Date
January 31, 1998Problem
The 1159393 Unit Injector Lifter Assembly on some C-10 and C-12 Truck Engines may crack.
Affected Product
Model & Identification Number
C-10 (2PN1125-1979)
C-12 (1YN1294-2426)
Parts Needed
6 - 1159393 Unit Injector Lifter AssembliesAction Required
Some of the rollers may contain a material flaw on the roller surface. The flaw may appear as a faint line or scratch running parallel to the brass roller pin. Refer to Illustration 1.
1. Remove lifter bracket assemblies as outlined in the Disassembly and Assembly Manual, SENR1002-01.2. Replace all six 1159393 Unit Injector Lifter Assemblies.3. Install lifter bracket assemblies and tighten bolts to a torque of 30 N m (25 lb ft).
Illustration 1Service Claim Allowances
Labor Breakdown By Cab Type These codes and times are based on performing this repair with the cylinder head already removed.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
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