DETROIT DIESEL 53
2.2 Fuel Pump
Fig. 2. Fuel Pump Valving and Rotation (Right
Hand Pump Shown)
the pump to the inlet side when the discharge pressure
reaches approximately 65 to 75 psi.
The fuel pump should maintain the fuel pressure at the fuel
one drop per minute, the oil seals should be replaced.
Remove Fuel Pump
1. Disconnect the fuel lines from the inlet and outlet
openings of the fuel pump.
2. Disconnect the drain tube, if used, from the fuel pump.
3. Remove the three pump attaching bolt and seal
assemblies and withdraw the pump.
4. Check the drive coupling fork and, if broken or worn,
replace it with a new coupling.
Fig. 3. Removing Fuel Pump Cover Using
Disassemble Fuel Pump
Holding Fixture J 1508-10
With the fuel pump removed from the engine and mounted in
holding fixture J 1508-10 as shown in Fig. 3, refer to Figs. 1
and 2 and disassemble the pump as follows: