Volvo EC35, Operator'S Manual, Page: 72 / 140

Operating techniques
70 Signalling pattern
Signalling pattern
Manual signals to the driver of a mobile excavator acc. to SAE J1307.
Hand signals are mainly used by the signalling person as a means to direct the lifting, handling and positioning of
loads fastened to the attachment. Hand signals may also be used during earth moving work and/or when moving
the machine with limited visibility.
If quick lifting, lowering or driving is required, the movements must be made more vividly. If a load is to be loaded
by two machines it must be determined how lifting is to be performed and how the respective machine operators
are to be signalled.
LOAD UP
Forearm vertical, index finger
pointing up. The hand moves in small
horizontal circles.
LOAD VERTICAL DOWN
Once arm stretched down, index finger
pointing down. The hand moves in
small horizontal circles.
MOVE LOAD HORIZONTALLY
TOWARDS MACHINE
One arm stretched out, hand raised
and open in direction of motion.
Move the hand to the desired
direction.
MOVE LOAD HORIZONTALLY
AWAY FROM MACHINE
One arm stretched out, hand raised
and open in direction of motion.
Move the hand to the desired
direction.
RAISE BOOM
One arm stretched horizontally, the
hand forms a fist. The thumb points
up.
LOWER BOOM
One arm stretched horizontally, the
hand forms a fist. The thumb points
down.
MACHINE
One are stretched horizontally, the index finger points in direction of
swing.
RETRACT ARM
Both hands form fists, thumbs
point inward.
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