Air Shutoff Valve (Asov) (If Equipped) - JLG 800S Operation & Safety Manual

4.5

AIR SHUTOFF VALVE (ASOV) (IF EQUIPPED)

Air Shutoff Valve (ASOV ) is an overspeed protection device mounted to the engine's air
intake system. When the valve is actuated, it obstructs airflow intake and stops the
engine. Weekly tests are recommended to ensure the valve remains in good working
condition.
1.
Start the engine, running at idle.
2. Open the red switch guard on ASOV test switch, then activate toggle to
test mode.
Note: Test switch is located under hood to the left of the ground control
panel (look for test decal).
3.
At the ground control panel, select any function and activate until valve
actuates at test RPM of 1500. Once valve actuates, engine will stop.
4.
Turn ignition power OFF.
5.
Visually inspect valve to ensure it appears in good condition.
6.
Reset valve by rotating valve handle to the Open position.
Note: The handle cannot be turned unless the machine is off. Ensure the ignition
power is OFF.
Do not use ASOV as an alternative to shutting down machine properly.
Figure 13. ASOV Reset (Closed to Open Position)
800S, 860SJ
WARNING
31222372
Machine Operation
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