41EXCAVATOR OPERATION
EMERGENCY SHUT-OFF VALVE
To avoid personal injury or death:
A If the boom drops and the emergency shut-off
valves are activated, immediately move away
from the suspended object.
When the hose of the boom cylinders are ruptured and the
boom falls, the emergency shut-off valve is activated and
stops the boom part way through the fall.
If the emergency shut-off valves (1) are activated,
immediately set the operating lever to the neutral position.
Do not move the operating lever to the boom lowering
side. Contact a KUBOTA dealer for maintenance.
BOOM LOWERING VALVE
Use this valve if the engine fails to get started and the
accumulator fails to operate and there is an urgent need
to lower the boom.
To avoid personal injury or death:
A When the engine functions, move the control
lever to lower the boom. Never use the boom
lowering valve.
A Before starting this job, make sure there is
nobody below the boom.
A Loosen the boom lowering valve plug slowly
45-degree turn at a time. Be careful not to
loosen it a full turn or more at once because
otherwise oil may squirt out accidentally.
1. Make sure that the engine has stopped.
2. Open the fuel tank cover.
3. Loosen the boom lowering valve plug.
(1) Emergency shut-off valves
(1) Boom lowering valve plug
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