Komatsu PC290LC-11 Operation & Maintenance Manual page 446

HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT
3.
After removing plug, connect the attachment piping (5)
which is provided by the attachment manufacturer.
REMARK
For the fitting size and accumulator add-on, the action to
take differs according to the attachment manufacturer, so
consult your Komatsu distributor.
PEDAL OPERATION AND OIL FLOW OF MACHINE EQUIPPED WITH ATTACH-
MENT
The direction of operation of the pedal and the path of the oil flow is as shown in the figure.
• Depress the front side of pedal.
The oil flows into piping of the left side of the work equipment.
• Depress the rear side of pedal.
The oil flows into piping of the right side of the work equipment.
REMARK
When a breaker is installed, depress only the front side of pedal.
METHOD FOR SWITCHING 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.
Depending on the attachment, it is necessary to change the oil flow in the service circuit.
For setting of the flow, see "MACHINE SETTINGS (3-68)".
6-20
ATTACHMENTS AND OPTIONS