Kato SR-300L, Instruction Manual

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(1) Improve the ground surface as far as possible if it is soft, crumbly, uneven or sloping. Use wooden blocks etc. if
necessary to produce a flat surface and then set the outriggers on steel plates etc. of adequate areas and rigidity to
reduce surface pressure further.
(2) Ground which appears to be strong can have dangerously inadequate strength due to ground conditions below the
surface. Avoid areas which are likely to suffer such problems as listed below, and set the outrigger floats on steel
plates etc. of adequate areas and rigidity to guard against potentially weak soil.
・
Surfaces paved with plain asphalt
・ Surfaces paved with thin concrete
・
Brick or cobbled road surfaces
・
Areas where soil under the road paving has been eroded by water to leave a void
・ Areas where the soil is very dry but soft
・
Road shoulders or near construction excavations
Set the crane level with full consideration for the above points.
If the crane is not set level, the reduction in the crane's lifting capacity can be unexpectedly
severe. If you use the crane without noticing and correcting the inclination, it could tip over or
the boom could be broken even if the load is well below the rated lifting capacity.
(541A-0180-1E)
(3) Check that the suspension lock cylinders are fully retracted (suspension locked) before you set the outriggers.
(4) As a rule, all four outriggers should be extended fully. If you have no alternative but to use any outrigger at
intermediate extension or full retraction or if the outriggers cannot be used at all, you must first obtain the
permission of the site foreman and then proceed slowly and cautiously with safety as your prime concern.
(5) Check that nobody is near the outriggers and under the machine before you set the outriggers.
(6) While driving or when you set the outriggers, always check that the stopper pins are inserted to fasten the
outriggers securely in the correct positions.