Chapter 4 TPD1327E
Page 30
How to eliminate air from the fuel system
If air enters the fuel system, it must be removed
before the engine can be started.
Air can enter the system if:
• The fuel tank is drained during normal operation.
• The low-pressure fuel pipes are disconnected.
• A part of the low-pressure fuel system leaks during
engine operation.
In order to eliminate air from the fuel system,
proceed as follows:
Caution: Do not allow fuel from the engine to
contaminate the engine compartment. Put a drip tray
under the engine and discard old fuel in accordance
with local instructions.
1. Loosen the vent plug (A1) on the lter head for
the pre-lter.
2. Operate the priming lever on the fuel lift pump
(C) until fuel, free from air, comes from the lter
vent point. Tighten the vent plug.
3. If the drive cam of the fuel lift pump is at the
point of maximum cam lift, it will not be possible
to operate the priming lever. In this situation, the
crankshaft must be rotated one turn.
4. Loosen the banjo bolt (B1) on the lter head for
the lter.
5. Operate the priming lever on the fuel lift pump
(C) until fuel, free from air, comes from the lter
vent point. Tighten the vent plug.
Caution: Use a spanner to hold the body (B1 on
page 31) of the fuelled starting aid to prevent its
movement when the union nut is loosened and
tightened.
5. If the pipe to the fuelled starting aid has been
drained, loosen the union nut (B2 on page 31)
at the fuelled starting aid and operate the lift
pump until fuel, free from air, comes from the
connection. Tighten the union nut at the starting
aid.
To Next Page
Loading...
