Air Bleeding The Fuel System - Kubota V3600-E3 Operator's Manual

A Be sure to use a strainer when filling the fuel tank, or
dirt or sand in the fuel may cause trouble in the fuel
injection pump.
A For fuel, always use diesel fuel. You are required not
to use alternative fuel, because its quality is
unknown or it may be inferior in quality. Kerosene,
which is very low in cetane rating, adversely affects
the engine. Diesel fuel differs in grades depending
on the temperature.
A Be careful not to let the fuel tank become empty, or
air can enter the fuel system, necessitating bleeding
before next engine start.
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 ] (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,
then stop it, or move the fuel feed pump lever by
hand (optional).
4. Close the Joint bolt on top of the fuel injection pump.
A Always keep the air vent cock on the fuel injection
pump closed except when air is vented, or it may
cause the engine to stop.
PERIODIC SERVICE
[GRAVITY FEED SYSTEM]
(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 ] (fuel tanks lower than injection
pump)
1. For fuel tanks that are lower than the injection pump.
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 by lever to bleed.
3. The primary fuel filter
side of the pump if the fuel tank is lower than the
injection pump.
4. To bleed follow (2) through (5) above.
(PROCEDURE )
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
13
must be on the pressure