Perkins Phaser Series - To Eliminate Air from the Fuel System

20A FUEL SYSTEM
Fuel system
To eliminate air from the fuel system -
Bosch pump20A-08
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:
1 Loosen the vent plug (A1) on top of the twin
element fuel filter (A) by two or three turns. If a
single element filter is used, loosen the banjo
connection bolt (B1) which is fitted on the top of the
filter (B).
2 Operate the priming lever on the fuel lift pump
(C) until fuel, free of air, comes from the filter vent
point. Tighten the vent plug or the banjo connection
bolt. 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 revolution.
3 Ensure that the manual stop is in the "run"
position. If an electrical stop control is used, turn
the key of the start switch to the "R" position.
4 Loosen the union nut of the fuel inlet pipe (D1).
Operate the priming lever of the fuel lift pump until
fuel, free of air, comes from the loose connection.
Tighten the union nut.
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PA254
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PA261
PA015
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PA262
20A.20 Perkins Phaser/1000 Series, April 1995