Usage:
NOTE: 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 "PS9436" 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
Engines may experience ingress of coolant to the fuel system or vice versa due to the degradation of the sleeve seal-o-rings and the unit injector seal-o-rings. The contamination of coolant into the fuel system affects engine performance and can cause injector seizure. Contamination of fuel in the cooling system may reduce cooling performance.
Affected Product
Model & Identification Number
The work outlined in this program is to occur once only for the following engines with a minimum of 300,000 liters of fuel burned. In most applications this generally corresponds to:
- *Every 300,000 kms of engine life for B-Triple and Triple Road Trains.
- *Every 450,000 kms of engine life for B-Double and Double Road Trains.
- *Every 600,000 kms of engine life for Single Trailers.
- *Every 450,000 kms of engine life for B-Double and Double Road Trains.
3406E (5EK1-Up 6TS1-Up 1LW1-Up 5DS1-Up )
Parts Needed
- 6 - 9X7317 SEAL-O RING (Lower Seal-0-ring of unit Injector),
- 6 - 9X7418 SEAL-O RING (Upper Seal-0-ring of Unit Injector),
- 6 - 9X7419 SEAL-O RING (Mddle Seal-0-ring of Unit Injector),
- 6 - 9X7430 SEAL-O-RING (Upper Seat-0-ring of unit Injector Sleeve),
- 12- 9X7431 SEAL-O-RING (Lower Seal-0-ring of unit Injector Sleeve, two per sleeve),
- 6 - 9X7418 SEAL-O RING (Upper Seal-0-ring of Unit Injector),
Action Required
See the attached procedure.
Service Claim Allowances
NOTE: This job varies by cab type.
*See labor breakdowns. Labor Hours By Cab Type
Parts Disposition
Please return seal-o-rings packaged in plastic bags, with relevant history of the truck and engine, to:
Application and Service Engineer-
Caterpillar of Australia.
Private Mailbag 4.
Tuilamarine. 3043.
Handle all other parts in accordance with your Warranty Bulletin on warranty parts handling.
- (1-Rework Procedure)
Rework Procedure
1. Refer to attached parts book drawings.
2. Obtain an ECM print-out from the Truck. Retain this print-out.
3. Remove set of unit injectors. (Code 1290-010: refer p.109 of TRG for 3406E on highway truck engines;
4. Drain and collect coolant.
5. Remove and install set of unit injector sleeves (Code 1713-010: refer p. 111 of TRG).
6. Replace injector body seals and sleeve seals. Return seals only as per parts disposition.
7. Install set of unit injectors.
8. Refill with coolant.
9. Install set of unit injector sleeves.
Illustration 1.
Illustration 2.