UD Trucks QUESTER Series, Руководство пользователя

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8.INSPECTION AND MAINTENANCE
8-16
8.5 Air bleeding of fuel system
T h e e n g i n e o f t h i s v e h i c l e i s
provided with an automatic aeration
system that automatically bleeds air
from the fuel system and evacuates
air to the fuel tank while the engine
is running. Thus, during regular filter
replacement, no manual air bleeding
is required.
Air bleeding procedure
1. Stop the vehicle.
2. Apply the parking brake.
3. Turn OFF the engine.
4. Tilt the cab.
5. Remove the cover and noise
absorbing materials attached on
the left side rail (if equipped).
6. Pump the priming pump that is
attached to the pre-fuel filter (2)
bracket about 100 times until the
pressure is felt in the priming
pump (1).
Air bleeding will be completed, do
not open the nipple.
1. Priming pump
2. Pre-fuel filter
7. Start the engine. Let the engine
run at low idle condition for about
3-5 minutes.
8. If the engine does not start, per-
form air bleeding again.
9. Run the engine at idle speed.
10. Check for any leakage.
11. Ensure that the engine operation
is smooth.
12. Install the cover and noise
absorbing materials (if equipped).
NOTE
D o n o t i n c r e a s e t h e e n g i n e
speed, air may be pressed into
the cylinder head.
DANGER
After starting the engine, check
f o r f u e l l e a k a g e s f r o m a n y
components of the fuel system.
If found stop the engine and
contact the nearest UD Trucks
authorised dealer since fuel
leakages can lead to fire.