3054 Engine Caterpillar

Type 1 Engines and 9RM Engines

Note: For a complete description of Type 1 and Type 2 engines, refer to the Specifications Module, "Engine Design" for more information.

Illustration 1	g00308903
Fuel injection nozzle (1) Connection for the union nut of the fuel supply line (2) Threaded hole for the banjo bolt of the leak off line (3) Clamp (4) Seal (5) Spacer (6) Fuel injector assembly (7) Seat washer

(1) Tighten the union nut of the high pressure fuel line (not shown) to the following torque: ... 18 N·m (13.3 lb ft)

(2) Tighten the banjo bolts of the leak off tubing (not shown) to the following torque: ... 9.5 N·m (84 lb in)

(3) Tighten the flange bolts (not shown) for the clamp to the following torque: ... 12 N·m (9 lb ft)

Note: Remove the original seat washer from the threaded hole for the fuel injection nozzle which is located in the cylinder head. If the original seat washer is not removed, the projection of the nozzle will be incorrect when a new seat washer is installed. Do not reuse the seal (4) and the seat washer (7).

Bench test the fuel injection nozzles at a temperature of 18 to 20 °C (64 to 70 °F).

Note: Use clean SAE J-967 oil (ISO 4113) when you are conducting the test. The oil is available in 5 gallon containers ( 6V-6068 Calibration Fluid) and 55 gallon containers ( 6V-6067 Calibration Fluid). If dirty oil is used for the test, the components of the fuel injection nozzle will be damaged.

Refer to Testing And Adjusting, "Pressure Adjustment, Back Leakage Test, Nozzle and Seat Test".

Note: Ensure that the new fuel injection nozzles have the same identification code as the nozzles which were originally installed in the cylinder head.

Leakage in 10 seconds ... 0 drops

Type 2 Engines and 7BJ Engines

Note: For a complete description of Type 1 and Type 2 engines, refer to the Specifications Module, "Engine Design" for more information.

Illustration 2	g00293085
Fuel injection nozzle (1) Connection for the union nut of the fuel supply line (2) Threaded hole for the banjo bolt of the leak off line (3) Nut of the fuel injection nozzle (4) Wire clip (5) Seat washer

(1) Tighten the union nut of the high pressure fuel line (not shown) to the following torque: ... 22 N·m (16 lb ft)

(2) Tighten the banjo bolts of the leak off tubing (not shown) to the following torque: ... 9.5 N·m (84 lb in)

(3) Tighten the nut of the fuel injection nozzle to the following torque: ... 30 N·m (22 lb ft)

Note: When the fuel injection nozzle is installed, put a 2.0 mm (.08 inch) bead of 4C-5591 Anti-Seize Compound on the first two threads of the gland nut. Do not rotate the fuel injection nozzle after installation. The seal which is made by the anti-seize compound may break. A broken seal may allow leakage past the seat of the fuel injection nozzle.

(4) Wire clip

(5) Seat washer

Note: Remove the original seat washer from the threaded hole for the fuel injection nozzle which is located in the cylinder head. If the original seat washer is not removed, the projection of the nozzle will be incorrect when a new seat washer is installed. Do not reuse the seat washer (5).

Bench test the fuel injection nozzles at a temperature of 18 to 20 °C (64 to 70 °F).

Note: Use clean SAE J-967 oil (ISO 4113) when you are conducting the test. The oil is available in 5 gallon containers ( 6V-6068 Calibration Fluid) and 55 gallon containers ( 6V-6067 Calibration Fluid). If dirty oil is used for the test, the components of the fuel injection nozzle will be damaged.

Refer to Testing And Adjusting, "Pressure Adjustment, Back Leakage Test, Nozzle and Seat Test".

Note: Ensure that the new fuel injection nozzles have the same identification code as the nozzles which were originally installed in the cylinder head.

Leakage in 10 seconds ... 0 drops