5-38 Fuel pump cleaning, inspection and repair
Wash all parts in cleaning solvent and dry thoroughly.
Discard and replace mounting gaskets. Discard and replace oil seals if removed from pump body.
Inspect pump gear teeth for scoring or chipping.
Inspect mating surfaces of pump body and cover. The surface must be flat and smooth and free from nicks.
Inspect relief valve to make sure it is free from score marks.
Repair minor nicks and burrs with a fine crocus cloth. Replace all defective parts.
5-39 Fuel pump reassembly and installation
Reassemble fuel pump in reverse sequence illustrated in Figure 5-16.
Install inner oil seal, with lip of oil seal facing toward shoulder of tool. Drive seal in until it bottoms in body
Support pump body on wood blocks and install outer oil seal. Install lip of seal facing the adapter, then
insert pilot of installer into pump so seal starts straight into pump flange. Drive seal into the pump body until shoulder of
adapter contacts body.
Lubricate outside diameter of relief valve (Figure 5-15), and install the valve, pin, spring, gasket, and plug.
Press drive gear on the shaft beyond retaining ball hole in drive shaft. Then, place retaining ball in hole,
and press gear back until ends of slot contacts ball.
Lubricate shaft and gears with clean engine oil. Install drive shaft and driven gear shaft, and gear
assembly into the pump body.
Apply a thin coat of sealer on face of pump cover outside gear pocket area. Install pump cover and secure
with eight cover screws.
After assembly rotate pump shaft by hand to make certain parts rotate freely.
Installation. Install fuel pump in reverse sequence of removal procedure.