Maeda MC405C-3 - Tasks to be Performed Upon Engine Stop

Section 4 – OUTRIGGER SETTING Mini-Crawler Crane M A E D A
4-44 1/2019 MC405C-3
• 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/medium".
Failure to perform crane operation with
proper values may cause the machine to
topple over. Exercise caution when
performing operation.
• Despite the maximum extension of all the
outriggers, the width of extended outriggers
decreases due to an ungraded ground even
when clearance "a" in the figure is 50 mm.
Fig. 4-97
Crane operation should proceed with
respect to the values specified in "When the
crane is used with the outriggers extended
at the medium" in the rated total load chart.
• Despite the medium extension of all the
outriggers, the width of extended outriggers
decreases due to an ungraded ground even
when clearance "a" in the figure is 50 mm.
Fig. 4-98
Crane operation should proceed with
respect to the values specified in "When the
crane is used with the outriggers extended
at the minimum" in the rated total load
chart.
• 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 figure is 50 mm.
Fig. 4-99
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.
Tasks to Be Performed upon
Engine Stop
There are four outriggers installed to the
machine.
Although the setting method is described for just
one outrigger (outrigger [4]), set the other three
outriggers in the same way.
Fig. 4-100