Manitowoc 3900W - Page 332

STANDARD HAND SIGNALS FOR CONTROLLING CRANE OPERATIONS
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STOP. Arm extended, palm
down, move arm back and
forth horizontally.
EMERGENCY STOP. Both
arms extended, palms down,
move arms back and forth hor-
izontally.
TRAVEL. Arm extended for-
ward, hand open and slightly
raised, make pushing motion
in direction of travel.
DOG EVERYTHING. Clasp
hand in front of body.
TRAVEL. (Both Tracks.) Use
both fists in front of body, mak-
ing a circular motion about
each other, indicating direction
of travel; forward or backward.
TRAVEL. (One Track.) Lock
the track on side indicated by
raised fist. Travel opposite
track in direction indicated by
circular motion of other fist, ro-
tated vertically in front of body.
EXTEND BOOM. (Telescoping
Booms.) Both fists in front of
body with thumbs pointing out-
ward.
RETRACT BOOM. (Telescop-
ing Boom.) Both fists in front of
body with thumbs pointing to-
ward each other.
EXTEND BOOM. (Telescoping
Boom.) One Hand Signal. One
fist in front of chest with thumb
tapping chest.
RETRACT BOOM. (Telescop-
ing Boom.) One hand signal.
One fist in front of chest, thumb
pointing outward and heel of
fist tapping chest.
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