47
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 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 or death:
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.
AUTO IDLE (AI) OPERATION
1.
Throttle potentiometer
With this potentiometer the operator can adjust the
engine speed when the auto idle control is activated.
2.
Auto idle (AI) control switch
With this switch the auto idle control is turned on or off.
The auto idle control allows the engine speed to drop
to idle speed when the control levers are left in neutral
for longer than four seconds. If the control is activated,
the engine speed rises immediately to the preset rpm.
If the auto idle is not activated the throttle
potentiometer can be utilized to control engine speed
in a similar way to a conventional throttle control lever.
A
1-way circuit.....
A
2-way circuit.....
HAMMER etc.
THUMB, TILT BUCKET,
AUGER, GRAPPLE etc.
(1) Selection valve
(2) Selector lever
(1) Throttle potentiometer
(2) Auto idle control switch
(3) Auto idle lamp
Summary of Contents for KX033-4
Page 16: ...SAFE OPERATION 8 6 DANGER WARNING AND CAUTION LABELS...
Page 17: ...9 SAFE OPERATION...
Page 18: ...SAFE OPERATION 10...
Page 19: ...11 SAFE OPERATION...
Page 20: ...SAFE OPERATION 12...
Page 21: ...13 SAFE OPERATION...
Page 24: ...DEALER SERVICE 2 1 Engine serial No...
Page 66: ...44 EXCAVATOR OPERATION...
Page 117: ...95 LIFTING CAPACITY...
Page 118: ...96 LIFTING CAPACITY...