Metal Shavings in the Hydraulic Electronic Unit Injector (HEUI) Oil Passages{1250, 1274} Caterpillar

Integrated Toolcarrier:

IT62G (S/N: AKP1-UP; 6PS1-UP)

Truck Engines:

3126E (S/N: CKM1-UP; 9SZ1-UP)

3126B (S/N: BKD1-UP; BEJ1-UP; 8YL1-UP; 7AS1-UP; 6PZ1-UP; BES1-UP)

3126E (S/N: HEP1-UP)

Wheel Loader:

950F Series II (S/N: 5SK1-UP)

950F (S/N: 7ZF1-UP)

950G (S/N: 2JS1-UP; 4BS1-UP; 6NS1-UP; 3JW1-UP; 5FW1-UP; 5MW1-UP; 8JW1-UP)

960F (S/N: 9ZJ1-UP)

962G (S/N: 3BS1-UP; 5AS1-UP; 5RS1-UP; 4PW1-UP; 6EW1-UP; 6HW1-UP; 7BW1-UP)

Introduction

The permanent solution for the problem that is identified below is not known. Until the permanent solution is known, use the solution that is identified below.

Problem

The above listed serial numbers have had issues with metal shavings in the Hydraulic Electronic Unit Injector (HEUI) oil passages. These shavings were left in the HEUI oil passages as a result of a nozzle that was not operating correctly.

Solution

Return 0R-8849 Cylinder Head Gp with date codes 09006 through date code 12006. Return the 0R-7907 Cylinder Block Gp with the following sequence numbers.

Note: If cylinder blocks or cylinder heads have been installed, do not replace the cylinder heads. Instead, flush the HEUI oil system and replace all of the fuel injectors.