HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT
2ND-LINE ATTACHMENT PROPORTIONAL SWITCH
(if equipped)
Proportional control rolling switch.
The 2nd-line attachment proportional switch operates the 2nd
attachment circuit (e.g. clamshell rotation). The 2nd-line attach-
ment proportional switch is a roller proportional control switch.
Rolling the switch up produces rotation in one direction, rolling
down produces rotation in the opposite direction. Slight move-
ment of the roller will give slight movement of the clamshell; full
movement of the roller will give faster movement of the clam-
shell.
REMARK
If installing 2nd attachment as a field kit, ask the distributor to
change monitor setting to allow 2 attachment mode.
BREAKER MODE SWITCH
When operating breaker using breaker switch, lock the pedal with the lock pin to avoid accidental oper-
ation.
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.
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
6-18
k
k
WARNING
Working mode
ATTACHMENTS AND OPTIONS
Set pressure of safety valve
Hydraulic circuit
2
} if you
2
} when ATT/P
of service valve