YOKE 1H7633 - Caterpillar

1. Remove protection cap (1) from the valves. Remove the nut that holds the valve in the precombustion chamber. 2. Remove fuel injection valve and body (2) from the precombustion chamber as a unit.3. Make a separation of the valve from the body.Install Fuel Injection Valves
1. Install fuel injection valve (1) hand tight on body (2).2. Install the valve and the body in the precombustion chamber. 3. Inspect the seals on the nut that holds valve (1) in the precombustion chamber. Make a replacement of the seals if they are damaged. Install the nut in the precombustion chamber. Tighten the nut to a torque of 105 5 lb.ft. (142 7 N m).end by: a) install fuel injection lines