TM 5-4930-244-14
f.
Fuel Lift Pump Replacement
WARNING
·
DO NOT smoke or use open flame when working on the fuel system. An
explosion may occur, causing severe injury or death.
·
Clean up spills as soon as they occur. Spills may result in serious slip and
fall injuries.
·
Keep fuel away from open fire and keep fire extinguisher within easy reach
when working with fuel. Fuel is very flammable and can explode easily.
(1)
Removal. (Refer to Figure 5-16).
(a)
Loosen pipe clips (1) and slide them down on flexible fuel pipes (2 and 3). Remove flexible fuel pipe
(2 and 3) from connections (4).
(b)
Remove four cap screws (5) and four washers (6) holding fuel lift pump (7) onto diesel engine (8).
(c)
Remove fuel lift pump (7), gasket (9) and push rod (10) from diesel engine (8).
(d)
Unscrew union (11) from port of fuel lift pump (7).
(e)
Remove connection (4), with ferrule (12) and union (11) from port of fuel lift pump (7).
(2)
Repair.
(a)
Inspect all parts for damage, cracks, distortion and other damage. Replace parts as needed.
(b)
Replace gasket (9).
(3)
Installation.
(a)
Install push rod (10).
(b)
Align new gasket (9) and fuel lift pump (7) with holes on diesel engine (8). Install four washers (6)
and four cap screws (5). Tighten.
(c)
If new connection (4) is required, assemble union (11) onto connection (4) and Install ferrule (12)
(d)
Screw unions (11) into ports of fuel lift pump (7).
(e)
Install flexible fuel pipes (2 and 3) onto connections (4) Slide pipe clips (1) on flexible fuel pipes and
tighten pipe clips on flexible fuel pipes.
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