204
OPTIONS
Accumulator
Operating the Machine with
Accumulator
On machines equipped with an accumulator,
the residual pressure in the auxiliary
hydraulic circuits and the working equipment
can be released within a specific amount of
time (within 5 minutes) after the engine is
stopped.
Releasing the residual pressure
After using the machine, pressure remains
in the hydraulic circuits. This is called the
residual pressure. Use the procedure below
to release the residual pressure as
necessary.
Perform the operation to release the residual
pressure within 5 minutes after stopping the
engine.
1. Press the decel. button and idle the engine
at low speed.
2. Lower the bucket and dozer blade to the
ground.
3. Check that the safety lock lever is in the
released position.
4. Stop the engine.
5. Turn the starter switch to the ON position.
¡ First auxiliary hydraulics
6. Press both the auxiliary hydraulic buttons
(A) and (B) several times to release the
residual pressure in the circuitry.
¡ Second and fourth auxiliary hydraulics
6. Move the second / fourth auxiliary
hydraulic switch to the right and left several
times.
When equipped with fourth auxiliary
hydraulics. < TB180FR >
a. Press the selector button (2nd or 4th
Aux.) to change over to operation of the
second auxiliary hydraulics.
b. Move the second / fourth auxiliary
hydraulic switch to the right and left
several times.
7. Move all the control levers and pedal
several times in all directions to release
the pressure from the working equipment
circuitry.
8. Raise the safety lock lever to engage the
lock.
Lowering the boom when the engine has
stopped.
Perform this operation within 5 minutes after
stopping the engine.
1. Check that the safety lock lever is in the
released position.
2. Check that the starter switch is in the ON
position.
3. Push the operating lever slowly forward
to lower the boom.
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