Komatsu HB215LC-3, Operation & Maintenance Manual

Page: 444 / 492

SELECTOR VALVE
The selector valve switches the flow of the hydraulic oil.
It is automatically switched according to the selected working
mode. It is necessary to switch the working mode to match the
attachment that is installed. When changing the working mode,
see “METHOD FOR CHANGE-OVER AND CONNECT HY-
DRAULIC CIRCUIT FOR MACHINE READY FOR INSTALLA-
TION OF ATTACHMENT”.
NOTICE
If a service circuit from the attachment manufacturer is
added, the return circuit may not switch automatically.
ATT BYPASS SOLENOID
When the attachment control function is installed to the ma-
chine, the pressure to the attachment will be held by setting the
pedals at NEUTRAL position.
VARIABLE RELIEF PRESSURE VALVE
When the attachment control function is installed to the ma-
chine, the attachment set pressure which has been selected
with the machine monitor will be outputted.
The pressure automatically switches according to the attach-
ment to be selected.
ATTACHMENT 2 VARIABLE RELIEF PRESSURE VALVE
When the attachment control function by attachment 2 is instal-
led to the machine, the attachment set pressure which has
been selected with the machine monitor will be outputted.
The pressure automatically switches according to the attach-
ment to be selected.
HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS
6-10