SECTION 4 - MACHINE OPERATION
4-2
3121734
4.3
BOOM OPERATING CHARACTERISTICS AND
LIMITATIONS
Capacities
Raising boom above horizontal with or without any load in plat-
form, is based on the following criteria:
1.
Machine is positioned on a smooth, firm and level surface.
2.
Axles are fully extended.
3.
Load is within manufacturer’s rated capacity.
4.
All machine systems are functioning properly.
5.
Machine is as originally equipped from JLG.
Envelope Control System
The Envelope Control System is the primary means of controlling
the working positions of the tower and main boom within the
stability and structural requirements of the machine. The main
boom must be controlled in maximum angle and minimum
angle to avoid entering a position that could compromise back-
ward stability and avoid main boom to tower boom interference.
The main boom envelope does not change based on tower boom
angle. The tower boom must be controlled by permitting only
specific combinations of tower length and tower angle to avoid
entering a position that could compromise forward and back-
ward stability.
Recognized faults within this system will result in control by the
Electrical Retrieval System, reduced function speeds, and Boom
Control System (BCS) warning light illumination. After retrieval
the boom will be restricted from leaving the transport position
until the fault is resolved.
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