Komatsu H75051 Operation & Maintenance Manual page 407

ATTACHMENTS AND OPTIONS
6.
Raise the coupler slowly as the machine travels forward,
keep raising it until coupler tube comes to be connected
with the attachment hook and the attachment is a little lift-
ed off from the ground.
7.
Check that the attachment is horizontal to the left and right
and that each hook is correctly inserted.
8.
Operate the lever from "HOLD" position (B) to "TILT" posi-
tion (e), and set the coupler tilted fully.
9.
Put your hand off the quick coupler attachment switch.
The switch returns to its original position, the pilot lamp (1)
for releasing quick coupler goes out, and the alarm buzzer
stops sounding.
10. Operate the lever from "HOLD" position (B) to "TILT" posi-
tion (e), and keep it in "TILT" position (e). Pull out the cou-
pler plunger to lock the attachment.
11. Check that the lock pin indicators (3) on left and right side
are visible moved out.
12. Check that the quick coupler and the attachment are com-
pletely locked.
HANDLE HYDRAULIC TYPE QUICK COUPLER
g0038100
g0038108
6-7