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ATTACHMENTS AND OPTIONS
BREAKER MODE SWITCH
When operating breaker using breaker switch, lock the pedal with the lock pin to avoid accidental oper-
ation.
When you operate attachment, the screen will switch to the screen including bird's eye view automati-
cally.
The breaker mode switch operates the breaker.
Press the breaker mode switch to operate breaker and release
to stop.
METHOD FOR CHANGE-OVER AND CONNECT HYDRAULIC CIRCUIT FOR
MACHINE READY FOR INSTALLATION OF ATTACHMENT
NOTICE
•
The return circuit when a breaker is installed must return directly to the return filter, so do not use it
in the mode other than B mode.
•
The standard set pressure of the safety valve of the service valve is 20.6 MPa {210 kg/cm
select B mode set at the shipment from the plant and it becomes 27.4 MPa {280 kg/cm
or ATT/E mode is selected. Depending on the attachment, it may be necessary to adjust the pres-
sure. Ask your Komatsu distributor for the adjustment.
•
When the attachment control is installed to the machine, select the attachment mode of which the
setting pressure is applicable for the attachment, or the breaker mode. If the attachment mode of
which the setting pressure is applicable for the attachment is not available on the machine monitor,
consult your Komatsu distributor for the pressure setting.
SWITCHING THE HYDRAULIC CIRCUIT
•
Depending on the type of attachment, set the working mode on the monitor as follows.
•
The hydraulic circuit and the set pressure of the safety valve in the service valve switch according to the
working mode selected.
Attachment
Breaker or attachment with
one-way circuit
Crusher or other attach-
ment with two-way circuit
Depending on the attachment, it is necessary to change the oil flow in the service circuit.
For details of setting the oil flow , see "METHOD FOR OPERATING ATTACHMENT"
SWITCHING OF BREAKER AND GENERAL ATTACHMENT
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT
k
k
WARNING
Working mode
B mode
ATT/P or ATT/E mode
Hydraulic circuit
Return circuit automatically
becomes the circuit that
does not pass through con-
trol valve
Return circuit automatically
becomes the circuit that
does not pass through con-
trol valve
2
} if you
2
} when ATT/P
Set pressure of safety valve
of service valve
When shipped from factory:
20.6 MPa {210 kg/cm
When shipped from factory:
2
27.4 MPa {280 kg/cm
6-41
2
}
}
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