Gradall D152 Operators Safety Manual page 97

Hand Signals
EMERGENCY STOP - With both
arms extended laterally, hands
open downward, move arms back
and forth.
RAISE BOOM - With either arm
extended horizontally, fingers
closed, point thumb upward.
EXTEND BOOM - With both
hands clenched, point thumbs
outward.
SWING- With either arm extended
horizontally, point with forefinger
to direction of swing rotation.
Special Signals - When signals for auxiliary equipment functions or conditions not covered are required, they
shall be agreed upon in advance by the operator and signalman.
OY1090
STOP - With either arm extended
laterally, hand open downward,
move arm back and forth.
OY1120
LOWER BOOM - With either arm
extended horizontally, fingers
closed, point thumb downward.
OY1150
RETRACT BOOM - With both
hands clenched, point thumbs
inward.
OAC0300
OPEN BUCKET- Hold one hand
open and stationary. Rotate other
hand in small vertical circle with
forefinger pointing horizontally at
open hand.
OY1100
STOP ENGINE - Draw thumb or
forefinger across throat.
OY1130
MOVE SLOWLY - Place one hand
motionless in front of hand giving
motion signal. (Raise load slowly
shown)
OY1160
THIS FAR TO GO - With hands
raised and open inward, move
hands laterally, indicating distance
to go.
OAC0310
CLOSE BUCKET- Hold one hand
closed and stationary. Rotate
other hand in small vertical circle
with forefinger pointing
horizontally at closed hand.
OY1110
OY1140
OY1170
OAC0320