ARMY TM 9-2815-256-24
AIR FORCE TO 38G1-96-2
MARINE CORPS TM 2815-24/5
3-26. FUEL LINES.
Diesel fuel is flammable and toxic to eyes, skin, and respiratory tract. Skin/eye protection required.
Avoid repeated/prolonged contact. Good general ventilation is normally adequate.
Always use two wrenches when removing/installing fittings and/or fuel lines to avoid damage.
Catch fuel in suitable container.
If necessary, remove fuel line (11, FIGURE 3-58) by disconnecting it at fuel injection pump using two wrenches.
Remove capscrew (25) securing clamp (26) and remove fuel line.
If necessary, remove fuel line (9) by disconnecting it at elbows (10 and 24).
Remove three loop clamps (1, FIGURE 3-59).
Remove loop clamps (2 and 3).
At cylinder No. 6 fuel injector, loosen coupling nut (4) and disconnect return line to fuel tank. Remove coupling
nut (4) and bushing (5). Discard bushing (5).
At cylinder No. 1 fuel injection, loosen coupling nuts (6) and disconnect return tube (7). Remove nuts (6) and
bushing (8). Discard bushing (8). Disconnect other end of tube (7) from fitting (18).
Loosen coupling nuts (9) securing five tubes (10) to injectors. Remove tubes (10), ten coupling nuts (9), and
bushings (11). Discard bushings (11).
Tag and disconnect six fuel injection lines (12,13,14,15,16, and 17) from fuel injectors and fuel injection pump.
Cap all openings.
Inspect all fuel lines for wear, kinks, or fitting damage. Replace as necessary.
Ensure all connections are open.
Always use two wrenches when installing fittings and/or fuel lines to avoid damage.
Remove all caps and connect six fuel injection lines (12, 13, 14, 15, 16, and 17, FIGURE 3-59) to fuel injectors
and fuel injection pump as tagged during removal.
Install ten new bushings (11) and coupling nuts (9) on five tubes (10). Install tubes (10) to fuel injectors and
secure with coupling nuts (9). Do not overtighten coupling nuts.