Komatsu H70051 Series Operation & Maintenance Manual page 421

ATTACHMENTS AND OPTIONS
1.
Set the coupler tilted forward posture on a level ground,
stop the machine at the position just before attachment
hook and the coupler tube come to the same line.
Depress the brake pedal to stop the machine with direc-
tional lever at forward.
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 7 is completed.
• When you release the quick coupler, the quick coupler
lock release pilot lamp (1) lights up, and the alarm
buzzer sounds intermittently.
3.
Check that the lock pins have been removed. The lock pin
indicators (3) may not be visible.
4.
Operate the lever from "HOLD" position (B) to "DUMP" po-
sition (f), and set the coupler tilted forward.
HANDLE HYDRAULIC TYPE QUICK COUPLER
g0038106
g0038103
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