Gradall 544D-10 (9136-4142) Operation Manual - Manual (Page 53)

Form No. 20220 z z z z z 544D-10 Owner/Operator Manual
Standard Signals - When handler work conditions require hand signals, they shall be provided or posted conspicuously
for the use of both signalman and operator. No handler motions shall be made unless signals
are clearly understood by both signalman and operator.
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.
Instructions - When it is desired to give instructions to the operator other than provided by the established signal
EMERGENCY STOP - With both arms
extended laterally, hands open
downward, move arms back and
forth.
STOP - With either arm extended
laterally, hand open downward,
move arm back and forth.
RAISE BOOM - With either arm ex-
tended horizontally, fingers closed,
point thumb upward.
LOWER BOOM - With either arm
extended horizontally, fingers
closed, point thumb downward.
EXTEND TELESCOPIC BOOM - With
both hands clenched, point thumbs
outward.
TILT FORKS UP - With one arm held
at side, extend other arm upward
at about 45°.
RETRACT TELESCOPIC BOOM - With
both hands clenched, point thumbs
inward.
TILT FORKS DOWN - With one arm
held at side, extend other arm down-
ward at about 45°.
CLOSE BUCKET - Hold one hand
closed and stationary. Rotate other
hand in small vertical circle with
forefinger pointing horizontally at
closed hand.
MOVE SLOWLY - Place one hand
motionless in front of hand giving
motion signal. (Raise load slowly is
shown)
THIS FAR TO GO - With hands raised
and open inward, move hands
laterally, indicating distance to go.
OPEN BUCKET - Hold one hand
open and stationary. Rotate other
hand in small vertical circle with
forefinger pointing horizontally at
open hand.
STOP ENGINE - Draw thumb or
forefinger across throat.
HAND SIGNALS