Hitachi ZW140-6 Operator's Manual page 399

Hydraulic Type Quick Coupler Operation
ZW150PL-6
A quick coupler is a system by which a front attachment work
tool such as a bucket can be easily replaced with other type of
a work tool.
d
WARNING: During replacement work, keep personnel
away from the machine. Removal and installation of
pins can be achieved from the operator's seat.
Disconnecting:
Before removing a work tool, disconnect hydraulic hoses
from the attachment cylinders other than disconnecting
hydraulic hoses from the bucket and lift arm cylinders.
(Refer to page 13-5 for information on hydraulic
hose connection and disconnection.) Put the bucket
(attachment) to be removed on a support such as a pallet if
available.
1. Horizontally lift the bucket (attachment) by approx. 200
mm above the pallet.
d
WARNING: Before leaving the machine apply the
parking brake.
Operate the quick coupler switch with engine speed at
low idle.
2. Operate the quick coupler cylinder with hydraulic
coupler switch (1) to remove pin (4).
3. While pulling to slide lock switch (2), continue to press
switch removal position to remove the coupler cylinder
pin (4). Check that the pin has been in the unlock
position by using an indicator bar (5).
4. To allow the quick coupler pin to be removed, position
the bucket (attachment) as closely to the rear of the
pallet as possible.
5. While slowly lowering the lift arm, slightly tilt the bucket
forward by operating the bucket cylinder to allow the
bucket to come off the quick coupler.
OPTIONAL ATTACHMENTS
Hydraulic Type Quick Coupler Operation
13-3
200 mm
Horizontally lift the bucket
1
Deactivate
LOCK
4
M4GB-13-029
MNDF-01-006
2
2
M4GB-01-175
5
UNLOCK
M4GB-07-186
1