Maintenance
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3.4.4. High pressure lock-off valve replacement
<Removal>
1) Close all fuel cylinder manual valves.
On cylinders with electronic in tank
valves, disconnect the electrical harness
connectors from the tank valves.
CAUTION:
Always close the fuel cylinder valves
before servicing the system. Close the
valves using the valve manufactures
recommended procedure. Check for
multiple cylinders and close all the
valves before proceeding. Do not close
the manual shut off (1/4 turn) valve.
2) Relieve fuel pressure by running the engine until it stops.
3) Close the manual shut off (1/4 turn) valve.
4) Disconnect the battery ground cable.
5) Slowly disconnect the high-pressure fuel line from the high-pressure lock-off outlet.
CAUTION:
Before serving any fuel system component make certain that the fuel cylinder valves are fully
closed and the fuel line pressure properly relieved. Failure to do so could result in serious
personal injury and/or damage to property.
6) Slowly disconnect the high-pressure fuel line from the high-pressure lock-off inlet.
7) Remove the high-pressure lock-off valve.
8) Remove the inlet and outlet fittings from the high pressure lock-off valve.
CAUTION:
The replacement high-pressure lock-off valve is supplied without the inlet and outlet fittings.
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