Maeda LC1385M-8BF - Page 180

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[4] CHECKING CRANE OPERATIONS
Be sure to refer to the Operation sections between "3.15 Cautions before Crane Operation" and
"3.23 Crane Stowing Operation", and strictly observe the methods described and cautions
given when checking crane operations.
1. Verify that the boom rises smoothly when the right work
equipment control lever is operated to "RAISE" side (pull toward
you). Also, verify that the boom lowers smoothly when the right
work equipment control lever is operated to "LOWER" side
(push toward outside).
When doing the above, check for any abnormal sound emitted
by part of the boom or from the boom derrick cylinder.
If there is any abnormality, repair.
2. Verify that the boom extends smoothly when the left work
equipment control lever is operated to "EXTEND" (push forward).
Also, verify that the boom retracts smoothly when the left work
equipment control lever is operated to "RETRACT" (pull
backward).
When doing the above, check for any abnormal sound emitted
by part of the boom or from the boom telescoping cylinder.
If there is any abnormality, repair.
3. Verify that the hook is wound down smoothly when the right
work equipment control lever is operated to "DOWN" (push
forward). Also, verify that the hook is wound up smoothly when
the right work equipment control lever is operated to "UP" side
(pull backward).
When doing the above, check for any abnormal sound emitted
by part of the boom or from the winch motor.
If there is any abnormality, repair.
4. Verify that the crane smoothly slews counterclockwise when the
left work equipment control lever is operated to "LEFT" side
(push toward outside). Also, verify that the crane smoothly slews
clockwise when the left work equipment control lever is operated
to "RIGHT" side (pull toward you).
When doing the above, check for any abnormal sound emitted
nearby the slewing post.
If there is any abnormality, repair.