Operating instructions
Signalling diagram
135
Signalling diagram
For manual signalling to operator of a mobile excavator as per
SAE J1307.
The primary use of hand signals is for a signalman to direct the lift-
ing, handling and placement of loads attached to working equip-
ment. Hand signal usage may also be applicable to earthmoving
operations and / or machine travel when the operator's visibility is
obstructed. If a rapid lifting, lowering or moving movement is re-
quired, the arm movements should be carried out more lively. If
two different machines are used for lifting the same load, there
should be an agreement beforehand how the lift should be carried
out and what signals should be given to the respective operators.
Raise load vertically
With either forearm vertical, fore finger pointing up, move hand in
small horizontal circle.
Lower load vertically
With either arm extended downward, forefinger pointing down-
ward, move hand in small horizontal circle.
Move load in horizontally
With either arm extended, hand raised and open toward direction
of movement, move hand in direction of required movement.
Move load out horizontally
With either arm extended, hand raised and open toward direction
of movement, move hand in direction of required movement.
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