Komatsu H70051 Series Operation & Maintenance Manual page 417

ATTACHMENTS AND OPTIONS
6.
Tilt the coupler forward slowly and lower it slowly so that it
separates from the attachment hook.
7.
Release the quick coupler attachment after checking that
the coupler is released from attachment hook. Put your
hand off the quick coupler switch.
The switch returns to its original position, the pilot lamp (1)
for releasing quick coupler goes out, and the alarm buzzer
stops sounding.
8.
Drive the machine in reverse slowly to separate the ma-
chine from the attachment.
METHOD FOR REMOVING ATTACHMENT
(When the 3-point switch)
Do not perform the decoupling operation of the quick coupler while the work equipment is being dump-
ed. The attachment will come off and fall, and it may lead to a serious personal injury or death.
1.
Tilt the attachment.
2.
While pulling the lock (a) of the quick coupler attachment
switch in arrow direction (b), push it into decoupling posi-
tion (A).
• Keep the quick coupler attachment switch pressed un-
til the work of the step 5 is completed.
• When you release the quick coupler, the quick coupler
lock release pilot lamp (1) lights up, and the alarm
buzzer sounds intermittently.
HANDLE HYDRAULIC TYPE QUICK COUPLER
k k
WARNING
g0038100
6-17