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[4] OUTRIGGER MINIMUM EXTENSION
• Make sure all the outriggers are extended before performing crane operation. Crane operation
is allowed only when all the outriggers are placed properly. Potential overturning of the
machine may occur that leads to serious personal injury if disregarded.
• Always place the machine in a horizontal position with the use of the level when extending the
outriggers.
A warning buzzer sounds when the machine is inclined 3° or more and stops when the
machine is placed in a horizontal position.
• When the crane is used with the outriggers extended other than at the maximum, crane
operation should proceed with respect to the values specified in the rated total load chart
corresponding to “When the crane is used with the outriggers extended at the
minimum/midway”. Failure to perform crane operation with proper values may cause the
machine to topple over. Exercise caution when performing operation.
• Crane operation with the outriggers extended at the
minimum is permitted only if the outriggers are placed
on a level surface. 50mm of dimension between the
outrigger bottom and crawler bottom should be
obtained.
• On ungraded ground or similar, the width of extended
outriggers decreases even when clearance "a" in the
right figure is 50 mm. Do not perform crane operation
under such extension condition. Potential overturning of
the machine may occur that leads to serious personal
injury if disregarded.
• The machine becomes unsteady at some point if it undergoes a 360-degree slewing with an
object hoisted. Irrespective of the rated total load, ensure operation in a short working radius
and at low speed.
The figure shown at right represents the condition “When the crane
is used with the outriggers extended at the minimum” in the rated
total load chart.
NOTES
Outrigger minimum extension is defined as that:
1. The outrigger is set at the positioning pin position (40° front,
30° back).
2. The inner box of all the outriggers is minimized.
3. All the outriggers are placed on a level surface.
4. Approx. 50mm is assured for clearance "a” (between the
outrigger bottom and crawler bottom) in the figure at right.
NOTES
If even a group of outriggers is retracted to the minimum point, all
the outriggers are deemed to be extended at the minimum.
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