Takeuchi TL230, Operator'S Manual, Page: 204 / 208

8-6
OPTIONS
QUICK-COUPLERS
WARNING
Oil may spurt out if caps or filters are
removed or pipes are disconnected
before releasing the pressure in the
hydraulic system.
• When removing plugs or screws, or
when disconnecting hoses, stand to the
side and loosen them slowly to
gradually release the internal pressure
before removing.
• The quick coupler, connecting parts,
piping and hydraulic oil are hot
immediately after the engine is stopped.
Touching these parts will cause burns.
Be careful not to burn yourself when
installing or removing the quick coupler.
QUICK-COUPLERS
Connecting:
Remove dirt or debris from the surface of
both the male and female couplers, and from
the outside diameter of the male coupler.
Visually check the couplers for corroding,
cracking, damage or excessive wear. If any
of these conditions exist, the coupler(s) must
be replaced.
Install the male coupler into the female
coupler. Full connection is made when the
ball release sleeve slides forward on the
female coupler.
Disconnecting:
Hold the male coupler. Retract the sleeve on
the female coupler until the couplers
disconnect.
Releasing the Residual Pressure
Connecting: Push the quick couplers tightly
together and hold for five seconds; the
pressure is automatically released as the
couplers are installed.
Disconnecting: Push the quick couplers
tightly together and hold for five seconds;
then retract the sleeve until the couplers
disconnect.
Connecting the hydraulic circuits
To connect the attachment hydraulic lines,
observe the following procedures:
1. Release the pressure remaining in the
lines.
2. Remove the plugs.
3. Connect the attachment hydraulic lines to
ports (a), (b) and (T).
When a hydraulic breaker is installed:
a. Connect the supply circuit to the port (a)
and the return circuit to port (b).
b. Press the selector switch until the built-
in lamp lights up to select the one-way
flow.
· The port (T) is used for the drain
circuit
4. When connecting is complete, purge air
from the hydraulic lines.
a. Start the engine and run it at a low idle
speed with no load for 10 minutes.
b. With the engine running in low idle,
operate the auxiliary hydraulic buttons
repeatedly (approx. 10 times) to purge
air from the hydraulic lines.
c. Stop the engine and wait for at least 5
minutes until bubbles escape from the
hydraulic oil in the tank.