2-32
CONTROLS
Operating Selector valve
ACCESSORIES
Open .......When using a hydraulic breaker
(1-way flow)
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.
1. Loosen the bolts and remove the cover
(2).
Press these buttons to control the flow of the
oil in the auxiliary hydraulic lines.
(A) ...... Hydraulic oil flows to left auxiliary line
(a).
(B) ..... Hydraulic oil flows to right auxiliary line
(b).
Releasing residual pressure
After the auxiliary hydraulic circuits have
been used, 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 button (B).
(The residual pressure is released from the
port (a) line, and pressure is generated in
the port (b) line.)
2. Stop the engine and open the selector
valve (1) on the machine body.
(The residual pressure is released from the
port (b) line.)
When equipped with an accumulator
(option): Refer to “Accumulator” on page
8-10.
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