Takeuchi TB175, Operator'S Manual, Page: 59 / 231

56
CONTROLS
Accessories
First Auxiliary Hydraulic Lines
WARNING
Oil may spurt out if caps or filters are removed
or pipes disconnected before releasing the
pressure in the hydraulic system.
¡ ¡ ¡ ¡ ¡
When disconnecting hoses, release the
internal pressure before removing.
These lines deliver the hydraulic oil
necessary for operating a hydraulic breaker,
crusher or other attachments.
Stop valve .....
S
: Closed
O
: Open
Connecting the Hydraulic Circuits
To connect the attachment hydraulic lines,
use the following procedures:
1. Release the pressure remaining in the
lines then close the stop valve.
Refer to “Releasing the residual pressure”.
2. Remove the plugs.
3. Connect the attachment hydraulic lines to
ports (a) and (b).
When fitted with a hydraulic breaker,
connect the return circuit to port (b) and
the supply circuit to port (a).
4. Open the stop valves.
When fitted with a hydraulic breaker, open
the selector valve (1).
Refer to page 57 “Selector Valve”.
5. When connecting is complete, purge air
from the hydraulic lines.
a. Start and run the engine at low idle with
no load for 10 minutes.
b. With the engine running at low idle
operate the auxiliary hydraulic switches
repeatedly (approx. 10 times) to purge
air from the hydraulic lines.
c. Stop the engine and wait for more than
5 minutes until bubbles escape from the
hydraulic oil in the tank.
IMPORTANT: Follow the procedures for
purging air as instructed by the attachment
manufacturer if specified to do so.
6. Check for leaks.
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 button (B).
(The residual pressure is released from
the (a) port line, and pressure is generated
in the (b) port line.)
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 199 “Accumulator”.
L3C0012
b
a
S O
L3L035
B
A