237
OPTIONS
Operating Levers (with Second auxiliary hydraulics) / TB145
Disconnecting the hydraulic circuits
1. Release the pressure remaining in the
lines then close the stop valve.
Refer to “Releasing the residual pressure”.
2. Disconnect the lines from ports (a) and (b).
3. Install the plugs.
Releasing the residual pressure
After using the auxilliary hydraulic circuits,
pressure remains in the circuits. This is called
the residual pressure. Release this residual
pressure before disconnecting the lines.
1. Start the engine and press the auxiliary
hydraulic switch (B).
(The residual pressure is released from
the (a) port line, and pressure is generated
in the (b) port.)
2. Stop the engine and open the selector
valve (1) on the machine body.
(The residual pressure is released from
the (b) port line.)
When equipped with accumulator (option):
Refer to page 232 “Accumulator”.
Selector valve
O: Open .......When using a hydraulic
breaker (1-way flow)
S: Closed..... When using a reversible
attachment (2-way flow)
Change the direction of the hydraulic oil flow
by opening or closing the selector valve on
the machine body.
K3L023
A
B
1 - way
2 - way
1
1
O
S
G4D007E
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