SKYJACK, Page 19SJIII Compacts & Conventionals
February 2008
Component Identification Section 2 - Operation
2.5-10 Emergency Lowering System
This emergency lowering system allows platform
lowering in the event of an emergency or an electrical
system failure. Refer to Section 2.15 for the emergency
lowering procedure. The system contains the following
controls:
2
1
3
Figure 2-8. Emergency Lowering System
1. Holding Valve Manual Override Knob - Located
on the holding valve at the bottom of each lift
cylinder.
2. Emergency Lowering Valve - Located at the rear
of the hydraulic/electric tray.
3. Access Rod (3226, 3226M, 4626, 4632 & 68xx) -
Located at the left side of the base.
2.5-11 Lowering Warning System
A lowering warning system automatically stops the
lowering function before reaching the fully retracted
position and sounds an alarm.
2.5-12 Maintenance Support
1
Figure 2-9. Maintenance Support
1. Maintenance Support - The maintenance support
is a safety mechanism designed to support the
scissor assembly. When properly positioned it
can support the scissor assembly and empty
platform. The maintenance support must be used
when inspection and/or maintenance is to be
performed within the lifting mechanism. Refer to
Section 2.16 for procedure on how use and store
the maintenance support.
The maintenance support must be used
when inspection and/or maintenance or
repairs are to be performed within the
lifting mechanism. Failure to use this
safety mechanism could result in death
or serious injury.
Do not reach through the scissor assembly
when the platform is raised without the
maintenance support properly positioned.
Failure to avoid this hazard could result
in death or serious injury.
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