Removal and Installation of the
Fuel Injectors
Work carefully around an engine that is running.
Engine parts that are hot, or parts that are mov-
ing, can cause personal injury.
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. Al-
ways 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 assistance immediately.
Operate the engine at a fast idle speed to identify the
faulty fuel injector. Individually loosen and tighten the
union nut for the high-pressure pipe to each fuel
injector. 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.
i07777086
Fuel
Inlet
Screen
-
Clean/
Inspect/Replace
Fuel leaked or spilled onto hot surfaces or electri-
cal components can cause a fire. To help prevent
possible injury, turn the start switch off when
changing fuel filters or water separator elements.
Clean up fuel spills immediately.
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.
Before starting this procedure, the Fuel Injection
Pump (FIP) driveshaft should be locked by reversing
the lock pin. Refer to the Disassembly and Assembly,
“Fuel Injection Pump - Remove” for more information.
Turn the valves for the fuel lines (if equipped) to the
OFF position before performing this maintenance.
Place a tray under the fuel injection pump to catch
any fuel that might spill. Clean up any spilled fuel
immediately.
Recommendations are that the screen is replaced
along with rubber gasket at every (500 hours)
scheduled fuel filter replacement. Inspection can be
done to check on the accumulation of particles in the
aluminum bowl to determine if the screen needs to be
changed and the interval frequency. The screen can
be cleaned using diesel fuel / air from inside out.
Ensure that the diesel fuel used, meets the required
specification. Refer to the Operation and
Maintenance Manual, “Fluid Recommendations” for
more information.
Screen - Remove
Illustration 41
g06433721
Typical example of a fuel injection pump
1.
Clean the outside body of the screen assembly.
2.
Using a suitable wrench, turn the knurled nut (1)
anticlockwise until the aluminum bowl (2)
separates from the fuel injection pump body (3).
M0106585
67