Air Bleeding The Fuel System - Kubota V3300-E Operator's Manual

14 PERIODIC SERVICE
BAir bleeding the fuel system
CAUTION
To avoid personal injury;
A Do not bleed a hot engine as this
could cause fuel to spill onto a hot
exhaust manifold creating a danger
of fire.
Air bleeding of the fuel system is required if;
A after the fuel filter and pipes have been detached
and refitted;
A after the fuel tank has become empty; or
A before the engine is to be used after a long storage.
[PROCEDURE A] (gravity feed fuel tanks only)
1. Fill the fuel tank to the fullest extent. Open the fuel
filter lever.
2. Open the joint bolt on top of the fuel injection pump.
3. Turn the engine, continue it for about 10 seconds
and then stop the engine.
4. Close the joint bolt on top of the fuel injection pump.
A Always keep the joint bolt on the fuel injection pump
closed except when air is vented, or it may cause the
engine to stop.
[GRAVITY FEED SYSTEM]
[V3307-DI-TE]
[V3300-E, V3300-TE, V3300-DI-E, V3300-DI-TE,
V3800-DI-E, V3800-DI-TE, V3300-EBG, V3300-T-EBG]
(1) Joint bolt
(2) Fuel feed pump
A For the engine equipped with automatic venting
(optional) no manual bleeding of fuel lines is
required.
[PROCEDURE B] (fuel tanks lower than injection
pump)
For fuel tanks that are lower than the injection pump
1. The fuel system must be pressurized by the fuel
system electric fuel pump.
2. If an electric fuel pump is not used, you must
manually actuate the pump to bleed.
3. The primary fuel filter must be on the pressure side
of the pump if the fuel tank is lower than the injection
pump.
4. To bleed, follow (2) through (4) above.
(PROCEDURE A)
A Tighten air vent plug of the fuel injection pump
except when bleeding, or it may stop the engine
suddenly.
[TANK BELOW INJECTION PUMP SYSTEM]
(1) Fuel tank below injection pump
(2) Pre-filter
(3) Electric or Mechanical pump
(4) Main Filter
(5) Injection pump