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QUICK COUPLER SYSTEM
REMARK
When switch (1) and switch (2) are operated together a
warning (3) on monitor appears to inform that the quick
coupler system is activated.
3.
Depending on the design of the quick coupler it may be
necessary to operate one of the hydraulic functions of the
machine (bucket, boom, arm or swing) to raise the pres-
sure in the hydraulic system. If using the swing function ac-
tivate the Swing Lock first. Refer to "SWING LOCK
SWITCH (3-89)"
The quick coupler will now release the attachment/bucket.
REMARK
When during the operation decrease oil pressure in the quick coupler system a warning buzzer will sound inter-
mittently. Action level L03 and an error message appears on monitor display.
In this case stop the machine immediately and ask your Komatsu distributor for inspection and maintenance.
TO PICK UP A NEW BUCKET OR ATTACHMENT
•
Check daily that the hoses and fittings in the quick coupler piping system are in good condition.
Pay particular attention to the hoses and fittings at the arm end as these can be damaged easily. In
case of damage or leakage of oil stop work. Loss of oil could lead to the bucket or attachment fall-
ing and killing an exposed person. The damage or leakage must be repaired before continuing
work.
•
This machine has a system installed to give a warning if there is a failure to maintain pressure in
the quick coupler system. If the buzzer sounds in the cab make sure that the cause is clarified be-
fore continuing work. In particular check for leaks in the system. If in doubt call your Komatsu dis-
tributor.
1.
Position the quick coupler over the new bucket or attachment.
6-6
k
k
WARNING
ATTACHMENTS AND OPTIONS
3
G0018284
G0018285
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