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If the main hydraulic system fails, the aerial platform
may be lowered and stowed using the emergency pow-
er system. The main boom may be lowered using the
emergency lowering knob. The machine may be towed
if the drive system fails. Refer to Emergency Power Sys-
tem, Emergency Lowering, or Towing for the appropriate
procedure.
Emergency Power System
The emergency power system can be used to operate
the machine from the lower or upper controls.
Caution
The emergency power system is for emergency low-
ering and stowing only. The length of time the pump
can be operated depends on the capacity of the bat-
teries. Do not use this system for normal operation.
Only use the emergency power system if the main power
system fails.
Lower Controls
Use the following procedure to operate the machine using
the emergency power system from the lower controls.
1. Place the battery disconnect switch in the on position
(refer to Figure 10.1).
Battery Disconnect Switch
Figure 10.1 – Battery Disconnect Switch
2. Place the key in the control selector switch (refer
to Figure 10.2) and turn it to the lower control posi-
tion.
460SJ – 1433685
Chapter 10 – Emergency Operation
Start/Emergency Power/
Ground Operation Switch
Figure 10.2 – Lower Controls
3. Pull the emergency stop button outward.
4. Hold the emergency power switch upward in the
emergency power position.
5. Hold the appropriate function toggle switch in the
desired direction.
Upper Controls
For the upper controls to be operational:
• The battery disconnect switch must be in the on posi-
tion.
• The emergency stop button at the lower controls must
be in the on position.
• The controls selector switch at the lower controls
must be in the upper control position.
Use the following procedure to operate the machine using
the emergency power system from the upper controls.
1. Pull the emergency stop button outward (refer to
Figure 10.3).
Controls Selector Switch
Emergency
Stop Button
61
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