2.2 Fuel Pump
DETROIT DIESEL 53
Fig. 2 Fuel Pump Valving and Rotation (Right Hand Pump Shown)
the pump to the inlet side when the discharge pressure
Fig 3, refer to Figs. 1 and 2 and disassemble the
reaches approximately 65 to 75 psi.
pump as follows:
The fuel pump should maintain the fuel pressure at
the fuel inlet manifold as shown in Section 13.2.
If leakage exceeds 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.
Disassemble Fuel Pump
With the fuel pump removed from the engine and
Fig. 3 - Removing Fuel Pump Cover Using
mounted in holding fixture J 1508-10 as shown in
Holding Fixture J 1508-10
Page 2
