8-462-11039
8.3 PRIMING FUEL SYSTEM
8.3.1 Mechanical Fuel Pump
The mechanical fuel lift pump is mounted on the engine
next to the injection pump. This pump has a manual
plunger for priming the fuel system when the fuel tank
has been run dry. (See Figure 8--1).
To prime the fuel system, use the following steps:
1. Turn the bleed valve (Red) counter-clockwise until
fully opened.
2. Turn the top of the manual fuel pump plunger
counter-clockwise to unlock it. S--L--O--W--L--Y
(up/down once per second) pump the manual
plunger until positive pressure (resistance) is felt.
This may take up to 200 strokes. This will indicate
fuel flow.
3. Continue to pump S--L--O--W --L--Y (up/down once
per second) approximately 100 more strokes to fill
the filter and bleed the air out of the lines.
4. Start engine. It may be necessary to continue to
pump until the engine starts.
5. Depress and turn the top of the manual plunger
clockwise to lock in place.
6. When engine is running smoothly, turn bleed valve
clockwise until fully closed.
Manual
Fuel Pump
Plunger
Red
Fuel Bleed
Valve
Figure 8 --1. Priming Fuel Pump
To Next Page
Loading...