Fuel System - Prime - Perkins 1106E Operation And Maintenance Manual

68
Maintenance Section

Fuel System - Prime

Make sure that you wear eye protection at all
times during testing. When fuel injection nozzles
are tested, test fluids travel through the orifices
of the nozzle tip with high pressure. Under this
amount of pressure, the test fluid can pierce the
skin and cause serious injury to the operator.
Always keep the tip of the fuel injection nozzle
pointed away from the operator and into the fuel
collector and extension.
NOTICE
If your skin comes into contact with high pressure fuel,
obtain medical assistence immediately.
Operate the engine at a fast idle speed in order to
identify the faulty fuel injector nozzle. Individually
loosen and tighten the union nut for the high pressure
pipe to each fuel injector nozzle. Do not loosen the
union nut more than half a turn. There will be little
effect on the engine speed when the union nut to
the faulty fuel injection nozzle is loosened. Refer to
the Disassembly and Assembly Manual for more
information. Consult your authorized Perkins dealer
or your Perkins distributor for assistance.
Fuel System - Prime
If air enters the fuel system, the air must be purged
from the fuel system before the engine can be
started. Air can enter the fuel system when the
following events occur:
•
The fuel tank is empty or the fuel tank has been
partially drained.
•
The low pressure fuel lines are disconnected.
•
A leak exists in the low pressure fuel system.
•
The fuel filter has been replaced.
Use the following procedure in order to remove air
from the fuel system:
This document has been printed from SPI². Not for Resale
Illustration 37
1. Loosen nut (2) on the fuel injection pump (1).
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Illustration 38
Note: If the drive cam for the fuel priming pump is in
the position of maximum cam lift, the priming lever
will not operate. Rotate the crankshaft by hand one
revolution.
2. Operate the priming lever (4) on the priming pump
(3) until the fuel flows out of nut (2) free of air.
3. Tighten nut (2) to a torque of 23 N·m (17 lb ft).
Illustration 39
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