i08456754
Fuel Injector - Inspect/Adjust
NOTICE
Only qualified service personnel should perform this
maintenance. Refer to the Service Manual or your au-
thorized Perkins distributor for the complete proce-
dure to inspect or adjust the fuel injectors.
Operation of Perkins engines with fuel injectors that
have not been inspected or adjusted can reduce en-
gine efficiency, and also reduce engine component
life.
Refer to Systems Operation, Testing and Adjusting,
“Electronic Unit Injector - Test” and “Electronic Unit
Injector - Adjust” for the correct procedures to inspect
and adjust the fuel injectors.
i07398052
Fuel Injector - Replace
Fuel leaked or spilled onto hot surfaces or electri-
cal components can cause a fire.
NOTICE
Do not allow dirt to enter the fuel system. Thoroughly
clean the area around a fuel system component that
will be disconnected. Fit a suitable cover over any
disconnected fuel system components.
NOTICE
If a fuel injector is suspected of operating outside of
normal parameters it should be removed by a quali-
fied technician. The suspect fuel injector should be
taken to an authorised agent for inspection.
Refer to the appropriate Disassembly and Assembly
manual for the removal and installation procedure.
i09996064
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 day tank is empty or 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 procedures to remove air from the
fuel system.
NOTICE
Do not crank the engine continuously for more than
30 seconds. Allow the starting motor to cool for two
minutes before cranking the engine again.
Illustration 95 g07697272
(1) Fuel priming switch
1. The fuel system can be primed from the key switch
or from a remote mounted switch (1).
2. Ensure that any fuel isolation switches to the
engine are in the open position to allow the correct
fuel flow.
3. Turn the fuel priming switch (1) to the ON position.
Hold the fuel priming switch in the ON position for
2 minutes.
4. Attempt to start the engine.
5. If the engine cannot be started, or if the engine
runs rough, or if the engine misfires, or if the
engine smoke, stop the engine. Repeat Step 3
through Step 5.
The fuel system can also be primed by using the key
switch. Turn the key to the ON position for 2 minutes.
After 2 minutes the fuel system should be primed. If
necessary, by cycling the key switch the system will
prime again for 2 minutes.
86 M0163009
Maintenance Section
Fuel Injector - Inspect/Adjust
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