D353 INDUSTRIAL & MARINE ENGINES Caterpillar

1. Disconnect fuel injection line (1).

2. Remove nut (2) for fuel injection valve.

3. Remove injection valve (3) and valve body.

4. Remove the injection valve from the valve body.

Install Fuel Injection Valves

1. Install fuel injection valve (1) on valve body (2). Tighten the valve finger tight only.

2. Install the fuel injection valve assembly in the precombustion chamber.

NOTE: Make sure the fuel injection valve is seated correctly in the precombustion chamber before installing the nut.

3. Install nut (4) for the fuel injection valve. Tighten nut to a torque of 105 ± 5 lb. ft. (142 ± 7 N·m).

4. Connect fuel injection line (3). Tighten nut to a torque of 30 ± 5 lb. ft. (40 ± 7 N·m).