SKYJACK, Page 18 SJIII Compacts & Conventionals
February 2008
Section 2 - Operation Component Identification
2.5-7 Free-wheeling Valve
1
Models 3220, 3226, 32xxM, 46xx and 68xx
1
Models 3215 and 3219
Figure 2-5. Free-wheeling Valve
1. Free-wheeling Valve - The free-wheeling valve
is located at the front and/or rear of the aerial
platform (depending on the model). Refer to
Section 2.14-1 for procedure on how to release
the free-wheeling valve.
2.5-8 Battery Charger
The charger is located at the rear of the base or inside
the battery tray. Refer to Section 2.17-2 for battery
charging operation.
Figure 2-6. Battery Charger
2.5-9 Pothole Protection Device
1
Figure 2-7. Pothole Protection Device
1. Pothole Protection Device - This device consists
of a set of mechanically actuated steel weldments
located under the hydraulic/electric tray and battery
tray. These weldments will automatically rotate for
reduced ground clearance when elevating the
aerial platform. If the pothole protection device
has not fully lowered, the drive function will be
disabled.
Crushing Hazard - Personnel on ground
must stay clear of pothole protection
device.
Do not drive elevated in areas where
electrical cords or debris are in the path
of travel.
Maintenance of the Pothole
Protection Device
As with all safety devices, periodic inspection and
maintenance is required to ensure the proper
operation of the pothole protection device.
This mechanism is designed to reduce ground
clearance and assist in the stability of an elevated
aerial platform in the event the aerial platform
encounters a “drop-off” or “pothole.” The nature
of this safety feature relies on maintaining a
consistent ground clearance, therefore, if the aerial
platform ever does come to rest on the pothole
device, the platform should be immediately
lowered and “locked out” to prevent further use
until a complete inspection of the mechanism is
performed by a qualified technician.
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