User Manual

Testing And Adjusting
Section
Fuel System
i04338391
Fuel System - Inspect
NOTICE
Ensure that all adjustments and repairs that are
carried out to the fuel system are performed by
authorized personnel that have the correct
training.
Before beginning ANY work on the fuel system,
refer to Operation and Maintenance Manual,
“General Hazard Information and High Pressure
Fuel Lines” for safety information.
Refer to Systems Operation, Testing and Adjust-
ing, “Cleanliness of Fuel System Components”
for detailed information on the standards of
cleanliness that must be observed during ALL
work on the fuel system.
A problem with the components that transport fuel to
the engine can cause low fuel pressure. This can
decrease engine performance.
1. Check the fuel level in the fuel tank. Ensure that
the vent in the fuel cap is not filled with dirt.
2. Check that the valve in the fuel return line is open
before the engine is started.
3. Check all low-pressure fuel lines for fuel leakage.
The fuel lines must be free from restrictions and
faulty bends. Verify that the fuel return line is not
collapsed.
4. Install new fuel filters.
5. Cut the old filter open with a suitable filter cutter.
Inspect the filter for excess contamination.
Determine the source of the contamination. Make
the necessary repairs.
i04802007
Air in Fuel - Test
Table 1
Required Tools
Tool Part Number
Part Description Qty
A
-
Sight gauge
1
NOTICE
Ensure that all adjustments and repairs that are
carried out to the fuel system are performed by
authorized personnel that have the correct
training.
Before beginning ANY work on the fuel system,
refer to Operation and Maintenance Manual,
“General Hazard Information and High Pressure
Fuel Lines” for safety information.
Refer to Systems Operation, Testing and Adjust-
ing, “Cleanliness of Fuel System Components”
for detailed information on the standards of
cleanliness that must be observed during ALL
work on the fuel system.
Note: Ensure that the tools are stored with the caps
in place. Store the tools in a clean plastic bag.
1. Ensure that the fuel level in the fuel tank is above
the level of the suction pipe in the fuel tank.
2. Inspect the fuel system thoroughly for leaks. If
necessary, repair the fuel system.
3. Check all low-pressure fuel lines from the fuel tank
for restrictions. Replace any damaged
components.
4. Prime the fuel system. Refer to Operation and
Maintenance Manual, “Fuel System - Prime” for
the correct procedure.
5. Start the engine. Refer to Operation and
Maintenance Manual, “Starting the Engine” for the
correct procedure. Check if the problem has been
resolved. Run the engine at low idle speed for 5
minutes.
6. Stop the engine. Refer to Operation and
Maintenance Manual, “Stopping the Engine” for
the correct procedure.
UENR0623-02
55
Fuel System
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