ROD 4S5780 - Caterpillar

Caterpillar: Confidential Yellow
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 be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS4374" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
Termination Date
March 31, 1999Problem
Exhaust elbows connecting the turbocharger and muffler leak exhaust gas at the elbow to muffler joint. The new exhaust elbow provides a tighter sealing surface between the elbow and muffler to prevent exhaust leaks.
Affected Product
Model & Identification Number
992G (7HR1-176)
T790G (1JW212-224)
Spare Engines In Dealer Inventory
3508B (2GR1-1141)
Parts Needed
8 - 2N2765 Bolt8 - 2N2766 Locknut2 - 1550511 ElbowAction Required
Parts Stock
Remove all 1150558 Elbows from parts stock.
Affected Product
Replace former exhaust elbow, 1150558, with new exhaust elbow, 1550511.
Service Claim Allowances
Parts Stock
Submit one claim for all 1150558 Elbows removed from parts stock.
Affected Product
This is a 4-hour job.
When submitting a claim on a spare engine in dealer inventory, use the appropriate 99Z----- Code.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.