OPTIONS
Quick-Couplers
AwARNING
•
Oil
may spray out
if
caps or filters are
removed or pipes disconnected before
releasing the pressure
in
the hydraulic
system.
• When removing plugs or
disconnecting hoses, release the
internal pressure before removing.
• Hydraulic fluid, tubes, fittings and
quick-couplers can get hot when
running
machine and attachments.
Be
careful when connecting and
disconnecting 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.
196
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,
use the following procedures:
1.
Connect the attachment hydraulic lines to
ports
(a)
and
(b)
.
When
fitted with a hydraulic breaker:
a. Connect the return circuit to port
(b)
and
the supply circuit to port
(a).
b.
Turn
on
the flow selector switch.
Refer
to page
58
, "Flow Selector
Switch."
Some attachments may have a case
drain, which needs to be connected to
the small port
(T)
.
2.
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 hydraulics switch
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.
To Next Page
Loading...
Need help?
General
