Kubota Super Series 2 KX 91-3, Operator'S Manual

Page: 53 / 98

33 EXCAVATOR OPERATION
1-way or 2-way CIRCUIT SELECTION
VALVE OPERATION
A selection valve which selects 1-way or 2-way circuit of
service port has been installed on the hydraulic tank.
1. When equipment which needs a 1-way circuit will be
used, position the arrow, by using the supplied lever,
on the axis of the selection valve to the 1-way circuit
position , to reduce the back pressure.
2. When equipment which needs a 2-way circuit will be
used, position the arrow on the axis of the selection
valve to the 2-way circuit position.
To avoid personal injury:
A
Stop the engine before removing/changing the
equipment.
A
Release pressure in the hydraulic system
before removing/chaging the equipment. (See
"HOW TO RELEASE PRESSURE TRAPPED IN
THE HYDRAULIC SYSTEM".)
A
Position the selection valve to the correct
position (either 1-way or 2-way circuit
selection) before mounting the equipment.
A Always select the correct valve position (1-way
or 2-way circuit selection) to avoid sudden
movement of the equipment.
A
Leaving the selection valve to 1-way circuit selection
and attaching 2-way circuit equipment may cause the
equipment to move (drop) suddenly due to its own
weight, as the tank line remains open, even with the
engine off.
NOTE:
A
1-way circuit..... HAMMER etc.
A 2-way circuit..... THUMB, TILT BUCKET,
AUGER, GRAPPLE etc.