Komatsu H70051 Series Operation & Maintenance Manual page 416

HANDLE HYDRAULIC TYPE QUICK COUPLER
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 6 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.
Operate the lever from "HOLD" position (B) to "TILT" posi-
tion (e) while the quick coupler attachment switch is press-
ed into (a). Retract the coupler plunger while keeping it at
"TILT" position (e) from the state that the coupler contacts
to the tilt-end stopper. Release the lock of attachment.
4.
Check that the lock pins have been removed. The lock pin
indicators (3) may not be visible.
5.
Lower the attachment completely to the ground and set it
in a stable position.
6-16
ATTACHMENTS AND OPTIONS
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g0038104