When the lock wedge (D) is released, the servo
pressure is transferred to the piston rod side. If
necessary, the release pressure can be increased
by loading the bucket cylinder in its end position.
There is a red indicator pin (A) on the quick coupler,
which is pulled in when the lock wedge is in the
locked position and pushed out when the lock
wedge is released.
By means of the lift hook, the machine can be used
for lifting operations. Since the hook is located on
the attachment quick coupler, it can be used without
a bucket. This improves visibility for the operator
and increases the maximum permissible load.
NOTE!
See page
260
for information on the lifting objects.
WARNING
The attachment quick coupler may be open
regardless of what is indicated by the alarm signal
or on the instrument panel. Therefore, always check
that the attachment quick coupler is locked
securely. Also read the instructions in the operator's
manual.
WARNING
Risk of crushing.
If the pressure in the attachment quick coupler
cylinder drops, the attachment could fall off and
cause serious crushing injury or death.
Never install shut-off valves in the lines leading to
the cylinder for the attachment quick coupler.
Operating techniques
Attachments, connecting and disconnecting
227
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