EXCAVATOR OPERATION
48
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 selector 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/changing 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 before
mounting the equipment (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.
A
1-way circuit.....
A
2-way circuit.....
HAMMER etc.
THUMB, TILT BUCKET,
AUGER, GRAPPLE etc.
(1) Selection valve
(2) Selector lever
Summary of Contents for KX040-4
Page 10: ......
Page 18: ...SAFE OPERATION 8 6 DANGER WARNING AND CAUTION LABELS...
Page 19: ...9 SAFE OPERATION...
Page 20: ...SAFE OPERATION 10...
Page 21: ...11 SAFE OPERATION...
Page 22: ...SAFE OPERATION 12...
Page 23: ...13 SAFE OPERATION...
Page 69: ...45 EXCAVATOR OPERATION...
Page 125: ...101 LIFTING CAPACITY...
Page 126: ...102 LIFTING CAPACITY...
