Product Support Program For Replacing Aluminum Pistons on Certain 3406E Truck Engines With Mileage Between 500,000 And 750,000 Caterpillar

NOTE: 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.

NOTE: This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS0983" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

NOTE: This Revised Service Letter replaces the September 1, 1996 Service Letter. Changes have been made to the Action Required.

Termination Date

Problem

Aluminum pistons, which do not meet reuse guidelines, may need to be replaced on certain 3406E Truck Engines with mileage between 500,000 and 750,000.

Affected Product
Model & Identification Number

3406E (5EK1-80006)

Parts Needed

1 - 4N1151 Gasket

1 - 5P5846 Seal-O-Ring

1 - 5P8068 Seal-O-Ring

6 - 0R8333 Cylinder Packs

6 - 9Y7735 Bearing

1 - 619458 Seal-O-Ring

6 - 1003851 Tube Assembly

6 - 1118606 Bolt

1 - 1358810 Gasket Kit

Action Required

Remove six cylinder packs and six oil spray jets (single spray jet).

Install six 0R8333 Cylinder Packs and six 1003851 Oil Spray Jets (double spray jet) and related gaskets and seals.

NOTE: Refer to SIMS and if Service Letter PS8700 or PS8748 had been previously completed, flash back to the original software.

Service Claim Allowances

Parts Disposition

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.