Perkins Phaser Series - Page 248

FUEL SYSTEM 20C
To eliminate air from the fuel system -
CAV pump20C-08
There are two methods to eliminate air from the fuel
system according to the type of pump fitted:
The standard method is used where the fuel
injection pump has vent screws (A1, A2).
The self-vent method is used where the fuel
injection pump has a self-vent feature. These
pumps have a vent pipe (C1) fitted between a
connection in the top of the pump and the atomiser
leak-off pipe. Vent screws are not fitted to these
pumps. No connections or plugs need be released
to eliminate air from the fuel system.
If air enters the fuel system, it must be removed
from the system 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 remove air from the fuel system,
proceed as follows:
Self-vent method
If the engine has been stopped by air in the fuel
system:
Ensure that fuel has been added to the tank or that
the leakage has been corrected.
1 If a manual stop control is fitted, ensure that it is
in the "run" position.
2 Operate the starter motor until the engine starts.
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Perkins Phaser/1000 Series, April 1995 20C.05