Perkins 900 Series Workshop Manual page 197

11
900 Series
To eliminate air from the fuel system Operation 11-19
If air enters the fuel system, it must be removed before the engine can be started.
Air can enter the system if:
l The fuel tank is drained during normal operation.
l The low-pressure fuel pipes are disconnected.
l A part of the low-pressure fuel system leaks during engine operation.
In order to eliminate air from the fuel system, proceed as follows:
Vent screws are not fitted to the fuel injection pump. Air will usually be removed from the fuel pump
automatically.
Caution: If the fuel system is empty or if the canister(s) of the fuel filter have been renewed, it will be necessary
to eliminate air from the fuel system, especially the fuel injection pump.
1 Loosen the vent plug on the filter head of the pre-filter (if fitted). Operate the priming lever of the fuel lift pump
(B) until fuel, free of air, comes from the banjo bolt. Tighten the banjo bolt.
Note: If the drive cam of the fuel lift pump is at the point of maximum lift, it will not be possible to operate the
priming lever. In this situation, the crankshaft must be rotated one revolution.
2 Loosen the banjo bolt (A1) on the top of the filter head. Operate the priming lever of the fuel lift pump until
fuel, free of air, comes from the banjo bolt. Tighten the banjo bolt.
1
1
A B
C0012 C0013
Continued
Workshop Manual, TPD 1345E, issue 3 187
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