Oshkosh JLG 520AJ, Operation And Safety Manual

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SECTION 4 - MACHINE OPERATION
4-2 – JLG Lift – 3121664
4.2 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. Load is within manufacturers rated design capacity.
3. All machine systems are functioning properly.
4. Machine is as originally equipped from JLG.
Stability
Machine stability is based on two (2) conditions which are called
FORWARD and BACKWARD stability. The machine’s position of
least FORWARD stability is shown in Figure 4-1., and its position
of least BACKWARD stability is shown in Figure 4-2.
TO AVOID FORWARD OR BACKWARD TIPPING, DO NOT OVERLOAD MACHINE OR OPER-
ATE THE MACHINE ON AN OUT-OF-LEVEL SURFACE.