EXCAVATOR OPERATION
50
BOOM LOWERING VALVE
Use this valve if the engine fails to get started and the
accumulator fails to operate and there is an urgent need
to lower the boom.
To avoid personal injury or death:
A
When the engine functions, move the control
lever to lower the boom. Never use the boom
lowering valve.
A
Before starting this job, make sure there is
nobody below the boom.
A
Loosen the boom lowering valve plug slowly
45-degree turn at a time. Be careful not to
loosen it a full turn or more at once because
otherwise oil may squirt out accidentally.
1. Make sure that the engine has stopped.
2. Open the fuel tank cover.
3. Loosen the boom lowering valve plug.
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.
Switch for Auto Idle (AI) Control
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
It is possible that the Auto Idle may not function until
hydraulic oil warms up in the cold weather. Therefore
it is not recommended that the Auto Idle be activated
until the machine is completely warmed up.
A
Before operating the control lever, check the Auto Idle
Indicator Lamp.
A
When operating in confined spaces or when loading
onto a vehicle, turn the Auto Idle switch off (Light off).
This is to prevent unwanted engine speed increases
when control levers are activated.
A
The Auto Idle control, when selected by a switch,
provides the operator with a way to control engine
speed without moving the Throttle Potentiometer,
simply by not activating any control levers for about
four seconds after stopping work, and then to simply
restore a preset (by potentiometer) engine speed by
activating any control lever to return to work.
A
The purpose of the system is to reduce fuel
consumption, noise and operator fatigue.
A
When the dozer control lever is locked at the "Float"
position on the angle blade type, the Auto Idle function
is not activated even if any other control lever is set in
the neutral position.
(1) Boom lowering valve plug
(1) Throttle potentiometer
(2) Switch for Auto Idle control
(3) Lamp for Auto Idle control
Summary of Contents for KX080-4
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Page 18: ...SAFE OPERATION 8...
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 70: ...46 EXCAVATOR OPERATION...
Page 127: ...103 LIFTING CAPACITY...
