Komatsu PC30MR-5 Operation & Maintenance Manual page 350

HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT
(2nd/3rd LINE)
2nd LINE ACTIVATION SWITCH
When the switch is pressed, activates the 2nd line.
Pressing the switch again, the 2nd line is deactivated.
The activation of the 2nd line is marked by a light positioned at
the left side of operator's seat.
2nd/3rd LINE ATTACHMENT PROPORTIONAL SWITCH
This switch is used to operate low pressure oil attachments.
If the operation mode selection switch is not set on the ATT/P
or ATT/E mode, this switch cannot be activated.
Flow rate can be adjusted according to the operating amount of
2nd/3rd line attachment proportional switch.
Activation of the right part of the switch
The oil flows towards the hose of the 2nd or 3rd line on the
right side of the boom (hydraulic tank side).
Activation of the left part of the switch
The oil flows towards the hose of the 2nd or 3rd line on the left
side of the boom (operator seat side).
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WENAM00150
ATTACHMENTS AND OPTIONS
RKA46120
RKA45920
RKA64140