TM 5-3895-346-14
FUEL PUMP
ENGINE OVERHAUL
CAUTION
The coating of sealant must be extremely thin since the pump clearances have been set up on the basis
of metal-to-metal contact. Too much sealant could increase the clearances and affect the efficiency of
the pump. Use care that sealant is not squeezed into the gear compartment, otherwise damage to the
gears and shafts may result.
8. Secure the cover in place with eight bolts and lock washers, tightening the bolts alternately and evenly.
9. After assembly, rotate the pump shaft by hand to make certain that the parts rotate freely. If the shaft does
not rotate freely, attempt to free it by tapping a corner of the pump.
10. Install 1/8-inch pipe plugs in the upper unused drain holes.
11. If the pump is not to be installed immediately, place plastic shipping plugs in the inlet and outlet openings
to prevent dirt or other foreign material from entering the pump.
Install Fuel Pump
1. Affix a new gasket to the pump body mounting flange and locate the pump drive coupling over the square
end of the fuel pump drive shaft.
2. Install the fuel pump on the engine and secure it with three nylon patch bolts.
NOTE
To provide improved sealing against leakage, nylon patch bolts are used in place of the former bolt and
seal assemblies.
3. Connect the inlet and outlet fuel lines to the fuel pump.
4. Connect the fuel pump drain tube, if used, to the pump body.
5. If the fuel pump is replaced or rebuilt, prime the fuel system before starting the engine. This will prevent the
possibility of pump seizure upon initial starting.
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