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2.14 OUTRIGGER SETTING OPERATION
• GROUND FOR SETTING OUTRIGGERS
Always set the outriggers to the level, safe and solid ground.
Performing the crane operation without setting the outriggers can contribute to the
overturning of the machine.
• OUTRIGGER SAFETY DEVICE
Always set the emergency stop cancel switch to the “OFF” (auto) position when operating the
outriggers.
Do not operate the outriggers with the emergency stop cancel switch at the “ON” (cancel)
position.
Set the emergency stop cancel switch to the “ON” (cancel) position only when performing the
inspection and maintenance.
• EXTENDING AND SETTING THE OUTRIGGERS
• Keep people away from the machine when setting the outriggers.
Staying around the machine may cause serious accidents such as getting caught between an
outrigger and the machine main unit.
• Always monitor the level to level the machine when setting the outriggers.
When the machine tilts for “3 degrees” or more, the overturning alarm buzzer sounds.
• Set the outriggers so that the rubber tracks are about 2 inches (50 mm) above the ground.
After setting the outriggers, verify that all the four outriggers are securely set.
• The outriggers of this machine can be set flexibly according to the terrain. However, if the
outriggers cannot be set in the “outrigger maximum extension” state, perform the crane
operation with the values given in the “Rated total load chart with outrigger medium
extension” and “Rated total load chart with outrigger minimum extension” in the rated total
load chart.
• When Extending and setting the outriggers, always maintain the outrigger rotary at the
extension position, and insert the position pin to the end. Do not set the outriggers with the
outrigger rotary stowed.
• There are four outriggers. Be careful not to mistake 8 outrigger switches for the others. Check
the numbers shown on the “operation plate” at the switch section and the location of the
“number plate” affixed to the outriggers. Wrong operation can lead to serious accidents.
• When operating two outrigger setting switches at the same time, choose two front switches
(outrigger (1) and (4)) or two rear switches (outrigger (2) and (3)). Operating two left or right
switches at the same time will suddenly raise two outriggers on one side, causing overturning
of the machine.
• When raising the machine, operate the four outrigger switches to raise them gradually and
uniformly. Suddenly raising two outriggers on one side will overturn the machine.
• Reduce the engine speed to low speed when operating the outrigger switches.
At the high engine speed, the outriggers operate suddenly, leading to serious accidents such
as overturning of the machine.
• Do not extend the outriggers with the outriggers set. Doing so applies unreasonable force on
the outriggers, resulting in the outrigger breakage.
• Always set the traveling lock lever to the “LOCK” position when operating the outriggers.
CAUTION
• Always keep the boom at the "fully retracted, lowest position and slew and store position"
when operating the outriggers. The outriggers cannot be operated if the boom is not stowed
completely. (Verify that the boom stowing lamp (green) on the outrigger display is ON.)
• After extending the outriggers, verify that the outriggers are securely set.
If all the outriggers are not securely set, the crane operations will not be enabled. (Verify that
all of the extension lamps and setting lamps (green) of the outrigger display are lit.)
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