TM 5-4320-300-14
5-11.
FUEL PUMP ASSEMBLY (CONT) -
Location/Item
Action
Remarks
9.
Valve spring,
Remove from pump body cavity.
pin, and relief
valve
NOTE
If oil seals need replacing, observe position of oil seal lips. Insert an oil seal remover in shaft
holes in pump body. Tap end of seal remover to remove inner and outer seals.
INSPECTION/REPAIR
WARNING
Do not direct compressed air against skin.
10. Interior and
Clean all parts in clean fuel oil and dry with
exterior parts
compressed air.
Check pump gear teeth for scoring, chipping, or
wear. Check ball slot in drive gear for wear. If
gear is damaged or worn, replace it. Inspect drive
and driven shafts for scoring or wear. Replace if
necessary. Driven shaft and driven gear must be
replaced as an assembly.
Inspect mating faces of pump body and cover for
roughness or other damage. Scratches or other
damage may result in pressure leaks. Also check
for wear at gear and shaft contact areas. Replace
pump cover or body if necessary.
Relief valve must be free from score marks and
burrs and fit its seat in pump body. If valve is
scored and cannot be cleaned with fine emery
cloth (Federal Specification P-C-1673) or crocus
cloth (Federal Specification P-C-458), replace valve.
5-31
