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TM 5-4320-305-24
2-42. REPLACE FUEL TANK LINES AND FITTINGS (Continued)
BLEEDING FUEL SYSTEM:
WARNING
Death or serious injury could occur if diesel fuel oil is not handled
carefully. Use in a well-ventilated area away from open flame,
arcing equipment, ignition sources, heaters, or excessive heat.
Always store fuel in proper, marked containers. DO NOT SMOKE.
1 Loosen vent screw on top of fuel filter cartridges (1)
four complete turns.
2 Pump primer lever on fuel feed pump (2) until all air
is removed from fuel filter (1) and fuel flows freely.
NOTE
The fuel feed pump is cam driven. If high
point of camshaft cam is in contact with fuel
feed pump cam lever, fuel system cannot be
primed nor air bled from fuel system using
fuel feed pump. Crank engine until pressure
can be felt on fuel feed pump primer lever.
3 Tighten vent screw on top of fuel filter cartridges (1).
4 Loosen breather plug (3) on solenoid valve (4), four
complete turns.
5 Place START/STOP switch in START position.
6 Press and hold in the OIL BY-PASS switch.
7 Pump primer lever on fuel feed pump (2) until all air
is removed from fuel filter (1) and fuel flows freely.
Release OIL BY-PASS switch after fuel flows freely.
8 Tighten breather plug (3) on top of solenoid valve (4).
2-158
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