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MACHINE OPERATIONS AND CONTROLS
q Do not pull in the crusher with the intermediate link and arm
pulled in.
The crusher will contact the boom and this may result in dam-
age to the machine.
PROHIBITION OF WORK AT THE STROKE END OF A CYLINDER
Do not use the attachment with the cylinder extended or retracted
all the way to its stroke end.
Leave some allowance at the stroke end when extending or
retracting the cylinder.
If the machine is operated with the bucket cylinder at the extract-
ing end, piston (1) strikes cylinder head (2). As a result, cylinder
head mounting bolt (3) may become loose and the cylinder piston
may come out eventually.
Confirmation and inspection before and after work.
Check the bolts of the bucket cylinder head for looseness. If any
bolts loosened, tighten them to the specified torque. If any bolts
have been removed, notify your Komatsu distributors.
7-20
HIGH REACH DEMOLITION EQUIPMENT 27M
INCORRECT
Matching of piston
and cylinder head
Cylinder stroke end
7
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