MAINTENANCE
7-71
Bleed Air from the Fuel System
Air in the fuel system may make the engine hard to start or
make it run rough or not run at all.
After draining water and sediment from the fuel filter,
replacing the fuel filter, cleaning the fuel pump strainer or
running the fuel tank dry, be sure to bleed the air from the
fuel system according to the following procedure.
Air Bleeding Procedure
This machine is equipped with a fuel priming solenoid
pump.
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CAUTION: Fuel leaks may lead to fires.
1. Turn the key switch to ON position. The fuel lift pump
operates to help prime the fuel system.
IMPORTANT: DO not start the engine.
2. The engine control module (ECM) operates the fuel lift
pump through a priming cycle which lasts at least 30
seconds. Cycle the lift pump several times by keying OFF,
waiting 10 seconds, and keying ON again.
3. Keep the key switch at ON position for at least 30
seconds after filling the main fuel filter.
4. Once the engine is started, slowly increase the engine
speed while air is purged from the fuel line.
5. Check the fuel supply system for fuel leaks.
IMPORTANT: Even if air is not thoroughly bled, do not
hold the key switch in the ON position for more than 5
minutes.
In case air is not thoroughly bled, first return the key
switch to the OFF position. Then, after waiting for
more than 30 seconds, turn the key switch ON again.
Failure to do so may cause damage to the electrical
pump and/or discharging the batteries.
If Air Mixed Downstream of Common Rail
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WARNING: INJECTION HAZARD
Fuel under high pressure
High pressure common rail, high pressure lines
fuel lines and high pressure fuel injection lines
contain high pressure fuel.
High pressure fuel injection into skin can cause
injury or death.
Keep hands away from injection lines while
turning engine with starter or while running
engine.
In case air mixed in the fuel system due to lack of
fuel and the engine is difficult to start, release air by
following the procedure given below.
1. Bleed air until the engine supply pump entrance
enough according to the above-mentioned
procedures.
2. Operate starter motor for long cranking within 20
seconds. If engine fails to start, return key switch
to OFF. Wait more than about 60 seconds, and
then try again.
Summary of Contents for ZW 310-6
Page 4: ......
Page 10: ...CONTENTS MEMO ...
Page 14: ...INTENDED USE 2 MEMO ...
Page 57: ...SAFETY SIGNS S 43 ZW310 6 SS 3777 2 ...
Page 59: ...SAFETY SIGNS S 45 ZW330 6 92Z7B S 40EU ...
Page 246: ...BREAK IN 2 2 MEMO ...
Page 280: ...DRIVING MACHINE 4 20 MEMO ...
Page 460: ...MAINTENANCE 7 146 MEMO ...
Page 464: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 4 MEMO ...
Page 468: ...STORAGE 10 4 MEMO ...
Page 474: ...TROUBLESHOOTING 11 6 MEMO ...
Page 498: ...INDEX 14 6 MEMO ...
Page 502: ...CONFORMITY MEMO ...
Page 506: ......