DETROIT DIESEL 53
FUEL PUMP 2.2
6. Lubricate the gears and shafts with clean engine oil.
7. Apply a thin coating of quality sealant on the face of the
pump cover outside of the gear pocket area. Then, place the
cover against the pump body with the two dowel pins in the cover
entering the holes in the pump body. The cover can be installed
in only one position over the two shafts.
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
Fig. 8. Inserting Fuel Pump Drive Shaft and
Gear Assembly through Oil Seals
8. Secure the cover in place with eight bolts and
lock washers, tightening the bolts alternately evenly.
9.After assembly, rotate the pump shaft by hand to
make certain that the parts rotate freely. When the
shaft does not rotate freely, attempt to free it by
tapping a corner of the pump.
10.If the pump is not to be used immediately, place
plastic shipping plugs in the inlet and outlet openings
to prevent dirt or other foreign material from entering
Fig. 7. Installing Outer Oil Seal
Install Fuel Pump
1.Affix a new gasket to the pump body 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 bolt and washer assemblies.
3.Connect the inlet and outlet fuel lines to the fuel pump.
December, 1970 SEC 2.2