2.2 Fuel Pump
DETROIT DIESEL 53
Fig. 2. - Fuel Pump Valving and Rotation (Right Hand Pump Shown)
Fig. 3., refer to Figs. 1. and 2. and disassemble the
the pump to the inlet side when the discharge pressure
pump as follows:
reaches approximately 65 to 75 psi.
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
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
Holding Fixture J 1508-10
Disassemble Fuel Pump
With the fuel pump removed from the engine and
mounted in holding fixture J 1508-10 as shown in
1970 General Motors Corp.