5 -32
5-13. General maintenance (When required)
(1) Air-bleeding from Fuel system
z The air in the fuel system may cause weak injection and the failure of engine start or stop. To prevent
such failure, bleed the air from fuel system.
▶ When replacing fuel filter only, air-bleeding from fuel injection pipe is not
necessary.
Notice
Air bleed plug
▶
HIGH PRESSURE FUEL. When the engine is running, do not loosen the fuel
injection pipes to bleed air from the fuel system.
Danger
1. Fuel return line ( Injector ~ Fuel return coupler)
2. Fuel injection pipes (Common rail ~ Injector)
3. Common rail
4. Manual feed pump
5. Fuel pre-filter
6. Fuel main filter
7. Fuel return coupler
8. High pressure pump
9. Fuel pressure pipe (Pump ~ Common rail)
10. Injector
11. Relief valve
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