SPRING 1U2816 - Caterpillar

SEBE7977 May 3, 2002
U-89
A-64
AU-58
S-58
H-58
O-76
TT-2
beforeor
after failure PRODUCTSUPPORT PROGRAM FOR RESETTING THE VALVE LASH ON CERTAIN C-15 AND C-16 ENGINESIN COMMERCIAL AND ON-HIGHWAY TRUCK APPLICATIONS, AND IN CERTAIN 3406E COMMERCIALAPPLICATIONS
1105 PS40970
This Program can be administered eitherbefore or after failure. In either case the decision whether to apply theProgram is made by the dealer. When reporting the repair, use "PS40970"as the Part number and "7755" as the Group Number. If administered beforefailure, use "56" as the Warranty Claim Description Code and use "T" asthe SIMS Description Code. If administered after failure, use "96" as theWarranty Claim Description Code 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.TERMINATION DATE
December 31,2002PROBLEM
Engines within the specified ranges may have mis-adjustedvalve lash settings and/or low torque on the valve lash adjusting screwjam nut. This program is to cover resetting the valve lash on those enginesat the first oil change unless there is a customer complaint of low poweror noise in the engine overhead. If this occurs the repair should be madeas soon as possible.AFFECTED PRODUCT
The serial number ranges listedbelow reflect the entire range of engines suspect for this problem. However,a significant number of these engines were inspected and/or reset eitherat Caterpillar or the OEM factory. Those engines were marked with the letters"YD" stamped near the serial number plate on the cylinder block. Enginesalready marked "YD" are not affected by this Service Letter.
Model Identification Number
C-15Truck 6NZ61645-6NZ62219
C-16Truck 7CZ2972-7CZ3021
C-15Industrial BEM778-BEM809
C-16Industrial BFM377-BFM379
3406EIndustrial 6BR2397-6BR2402
3406EMarine 9WR2588?9WR2615PARTS NEEDED
No parts needed Valve cover seals should be reused.ACTION REQUIRED
See the attached Rework Procedure.SERVICE CLAIM ALLOWANCES
For Truck Engine applications, claim asfollows: Code 1105-025, Inlet / Exhaust Valve(s) Adjust. Allowable timesper chassis are as follows:
SC MC CV CO
2.5 2.1 1.8 1.9
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Partssee note Labor Hrssee note Parts Labor Hrs Parts Labor Hrs
Based on Operator noise/powercomplaint 100% 100% 0 0 0 0
At regular oil change 100% 50%