Method For Removing Attachment - Komatsu H75051 Operation & Maintenance Manual

HANDLE HYDRAULIC TYPE QUICK COUPLER
QUICK COUPLER LOCK RELEASE PILOT LAMP
Quick coupler lock release pilot lamp lights up when the quick
coupler attachment switch is in the position of decoupling.
In order to release the quick coupler, operate the multifunction
mono-lever to TILT side while the quick coupler attachment
switch is in the decoupling position.
If this lamp is lit in other time than the decoupling operation of
quick coupler, there is a trouble in quick coupler solenoid ac-
tuating circuit. Move the machine immediately to a safe place,
stop the engine, then perform the inspection.

METHOD FOR REMOVING ATTACHMENT

1.
Tilt the attachment.
2.
Pull lock (A) of the quick coupler switch in the direction of
the arrow (b), and push in to RELEASE position (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.
6-4
ATTACHMENTS AND OPTIONS
g0038100
g0038101