D379, D398, D399 INDUSTRIAL & MARINE ENGINES Caterpillar

1. Remove the dampers (1) from the fuel lines at fuel injection pumps. Disconnect the fuel line from the pumps. Disconnect linkage from governor and remove governor control channel.

2. Remove the clips and remainder of the dampers from fuel lines.

3. Disconnect fuel lines from fuel injection valves. Remove the fuel injection lines. Put covers and plugs over openings to keep dirt and dust out.

Install Fuel Injection Lines

1. Remove the covers and plugs from fuel lines and openings.

2. Install the fuel lines (2) on the fuel injection valves and pumps.

3. Tighten the fuel line nuts (3) to a torque of 25 to 35 lb. ft. (35 to 45 N·m). Install the dampers and clips (1) on the fuel lines.

4. Install governor control channel. Connect linkage to governor.