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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.
3.
Disconnect fuel inlet line (3) at base of pump using 1/2 inch open end wrench.
4.
Using 1/2 and 5/8 inch open end wrench disconnect fuel outlet line (4).
5.
Using 1/2 inch box wrench remove two nuts (5) and two washers (6) from stud (7).
6.
Remove pump (8) and adapter housing (9) from engine block by pulling straight out.
7.
Using 7/16 inch box wrench remove three bolts (10) and washers (11) from fuel lift pump (6) and
adapter housing (9).
8.
Separate pump from adapter housing and remove push rod (12).
9.
Remove flange gasket (13) and pump-to-adapter gasket (14) and clean mounting surfaces of engine
block and housing adapter using putty knife.
INSTALL:
1.
Assemble fuel lift pump (8), pump-to-adapter gasket (14), push rod (12) and adapter housing (9).
2.
Install three washers (11) and bolts (10) and tighten using 7/16 inch wrench.
3.
Install flange gasket (13) on engine mounting.
4.
Fit fuel lift pump assembly to engine. Install two washers (6) and nuts (5) and tighten using 1/2
inch box wrench.
5.
Connect fuel outlet line (4) and fuel inlet line (3) and tighten using 1/2 and 5/8 inch open end
wrenches.
6.
Open engine fuel shutoff valve (1) or (2) as required.
7.
Bleed the fuel system (refer to paragraph 3-64).
8.
Rinse in fresh, clear water and allow to drip dry.
NOTE
For starboard engine pump replacement only reinstall buoyancy
flotation material (refer to paragraph 3-152).
8.
Close engine hatches.
3-141
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