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 TM 5-1940-277-20
TM 1940-20/2
REMOVE:
1.
Open and secure engine hatches (refer to paragraph 3-154).
2.
Close engine fuel shutoff valve (1) or (2) as applicable.
NOTE
If starboard fuel lift pump is to be replaced remove buoyancy
flotation material (refer to paragraph 3-152). There is no
requirement to remove buoyancy flotation material to replace
lift pump on port engine.
Have container ready to catch fuel.
3.
Using 5/8 inch wrench remove fuel inlet line (4) from fuel lift pump (7).
4.
Using 9/16 inch wrench remove fuel outlet line (3) from fuel lift pump (7).
5.
Using 13 mm wrench remove two screws (9) securing fuel lift pump (7) and gasket (6) to engine
block (5).
6.
Clean mounting surfaces of engine block (5) and fuel lift pump (7) with putty knife.
INSTALL:
NOTE
Placing priming lever in the down position will help in the
installation of fuel pump for the engine. Lever must be in the up,
locked position to allow maximum pumping capability after
installation.
1.
Place priming lever (8) on fuel lift pump (7) in the down position.
2.
Install fuel lift pump (7) and new gasket (6) on engine block (5) with two screws (9) using 13 mm
wrench.
3.
Using 5/8 inch wrench install fuel inlet line (4) on fuel lift pump (7).
4.
Using 9/16 inch wrench install fuel outlet line (3) on fuel lift pump (7).
5.
Open fuel shut off valve (1) or (2) as applicable.
6.
Using 5/8 inch wrench loosen vent screw (10) on fuel filter head (11).
7.
Pump priming lever (8) until a flow of fuel, free of air bubbles flows from vent screw (10) into
container. Clean up spilled fuel.
8.
Using 5/8 inch wrench tighten vent screw (10) on fuel filter head (11).
9.
Place priming lever (8) on fuel lift pump (7) in the up position.
10.
Close engine hatches.
3-142.1
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