GASKET 4N6296 - 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 "PS8200" 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
June 30, 1995Problem
The currently recommended oil level may cause oil system aeration on certain 3406B PEEC and 3406C Electronic Engines. Oil system aeration can result in failures of the timing advance BTM (brushless torque motor).
Affected Product
Model & Identification Number
3406B (2EK1-Up)
3406C (4CK1-24720)
Parts Needed
1 -1R0716 Filter - Oil1 - 1178949 Gage - Oil Level10 - Gallons of CF4 OilAction Required
See attached rework procedure.
Service Claim Allowances
This is a 1.0-hour job. When submitting a claim, identify which location (1, 2, or 3) was used to install the oil. If more time is needed to perform this repair, claim for the extra time and explain the difference in the claim story.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
This rework can be performed with the block- mounted sound suppression plate in place on the engine (if so equipped).
If performing this rework after a timing advance failure, repair the timing advance prior to the oil level gage rework described below. Also inspect the oil filter for excessive metal which may indicate metal erosion from piston crowns caused by excessive timing advance.
1. Drain the engine oil fromboth the shallow and deep sumps of the oil pan while the oil is "hot".2. Allow the oil to drain for 20 minutes.3. Install both drain plugs in the oil pan.4. Remove the existing oil filter and install a new, dry (no oil in it) 1R0716 Oil Filter.5. Add 32 quarts (8 gallons) of CF4 engine oil directly into the sump (oil pan) at location 1, 2, or 3 as shown in the attached Illustration.6. Wait 5 minutes.7. Install a new 1178949 Oil Level Gage.8. Remove oil level gage noting oil level.9. Mark this level as the "ADD" mark (use an engraving pen to mark).10. Add 4 quarts (1 gallon) of oil using the same location as in Step 5 (total oil in the system at this point is 36 quarts (9 gallons)). 11. Wait 5 minutes.12. Install the oil level gage.13. Remove the oil level gage noting the oil level.14. Mark this level as the "FULL" mark (use an engraving pen to mark).15. Add 4 quarts (1 gallon) of oil for the oil filter (total oil in the system at this point is 40 quarts (10