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Revision A
accordance with instructions. However, service procedures such as changing the fuel filter can result in the loss of the fuel
system
’
s prime. Follow this procedure to prime the fuel system.
IMPORTANT:
Bleeding the fuel system is
NOT
recommended or required. Manual priming will be required if:
•
The fuel filter is replaced
•
The fuel injection pump is replaced
•
The high-pressure fuel lines are replaced
•
The engine is run until the fuel tank is empty
Priming Fuel System
If the continuous flow of fuel to the fuel injector is interrupted, the fuel system will need to be re-primed manually.
DANGER
To prevent bodily injury or death from the unexpected startup of the machine, always stop the engine and remove the
key from the ignition before leaving the operator
’
s seat for any reason.
WARNING
The fuel pump high-pressure fuel lines and fuel rail contain extremely high pressure fuel. Never loosen any fittings.
Personal injury and property damage can result.
1.
Shut down the engine, and remove the key from the ignition.
2.
Open the hood to the lower position. For instructions, refer to
1022765
B
A
D
C
Figure 5.87: Primary Fuel Filter
3.
Ensure drain valve (A) at the base of the filter is closed.
4.
Remove vent cap (B) and fill bowl (C) with clean fuel.
5.
Reinstall vent cap (B) and hand tighten it.
6.
Start the engine and wait until the lubrication system
reaches normal operating pressure, then increase the
engine rpm to high idle for 1 to 2 minutes.
7.
After the air is purged, loosen vent cap (B) until the fuel
level lowers to just above collar (D), then hand tighten vent
cap (B).
NOTE:
The bowl will not fill completely during engine operation
but will gradually fill over time. The fuel level will rise as the
filter becomes plugged.
8.
Close the hood. For instructions, refer to
.
