TM 5-3805-281-24-2
Fuel System
INSPECT FUEL SUPPLY PUMP
1. Inspect supply pump housing (E) for cracks and wear.
Be sure plunger or roller tappet bore is not worn or
sored. Check condition of threads for inlet and outlet
fittings (A and B), hand primer pump (C) and spindle
guide plug.
2. Inspect plunger (F) or roller tappet for wear, scoring on
O.D. and burrs. Check lands that contact plunger and
fuel pump cam lobe to be sure they are flat and
undamaged, or that roller tappet is not worn. Remove
any deposits with a suitable solvent.
3. If pump housing or plunger/roller tappet mechanism is
worn or damaged, replace pump assembly (E). Use
new O-rings on fittings and new copper washer (D) on
primer.
Fuel Supply Pump (Bosch Shown)
A--Inlet Elbow Fitting
B--Outlet Elbow Fitting
C--Hand Primer Pump
D--Copper Washer
E--Pump Housing
F--Plunger (Roller Tappet on Nippondenso)
RG,RG34710,1289
1923OCT971/1
