Komatsu H70051 Series Operation & Maintenance Manual page 420

HANDLE HYDRAULIC TYPE QUICK COUPLER
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 quick coupler
release pilot lamp (1) 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.
METHOD FOR INSTALLING ATTACHMENT
(When the 3-point switch)
6-20
ATTACHMENTS AND OPTIONS
g0038100
g0038108