Perkins Phaser Series - Page 260

FUEL SYSTEM 20E
To eliminate air from the fuel system
Stanadyne pump20E-08
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:
1 Loosen the vent plug (A1) on the top of the filter
head.
2 Operate the priming lever on the fuel lift pump
(B) until fuel, free from air, comes from the filter
vent point. Tighten the vent plug.
Note: 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 If the pipe to the fuelled starting aid has been
drained, loosen the union nut (C1) 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. Use a spanner on the
flats of the fuelled starting aid to prevent its
movement when the union nut is loosened and
tightened.
Note: The fuelled starting aid for naturally aspirated
engines is fitted at the rear of the induction
manifold.
4 Loosen the union nuts (D1) of the high-pressure
pipes at two of the atomisers.
a a a a a a a a a
a a a
a
a
a
a
a
a
a a a
1
PA271B
PA015
a a a
a
a
a
a
a
a
a a a
1
PA016
PA031
a a
a a
a a
a a
1
Perkins Phaser/1000 Series, April 1995 20E.05