Winching And Towing Procedures; To Release Free-Wheeling Valve; Pin Brakes System - Skyjack SJIII 3219 Operating Manual

Procedures

2.5 Winching and Towing Procedures

This section provides the operator with the Winching
and Towing procedure, which includes instructions on
how to manually release the brakes.
WARNING
Ensure platform is fully lowered before
winching or towing. Sudden motion could
cause the aerial platform to become
unstable. Death or serious injury could
result.
WARNING
In emergency situations where aerial
platform functions are not available and
lowering is impeded by an obstacle,
utmost care must be taken to move
aerial platform far enough to clear the
obstacle. In such cases, operation must
be extremely smooth with no sudden
movements and must not exceed a speed
of 2"/sec (50 mm/sec).
WARNING
When pushing, winching or towing, do
not exceed 2 mph (3.2 km/h).
WARNING
Do not push, winch or tow aerial platform
onto a slope, or brake the towing vehicle
rapidly. Do not pull aerial platform down
an incline towards a winch.
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It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

2.5-1 To Release Free-wheeling Valve

1.
2.
2.5-2 To Release Brakes Manually
Releasing the brakes manually depends on the brake
system that is provided on the aerial platform.
2.5-2a Pin Brakes System
contained in this operating manual and on the aerial platform.
Section 2 - Familiarization
Ensure aerial platform is on level ground. Chock
or block the wheels to keep aerial platform from
rolling.
1
Figure 2-7. Free-wheeling Valve
Free-wheeling Valve - Turning valve knob
counterclockwise (item 1) to a fully opened
position allows fluid to flow through the wheel
motors, thus providing "free-wheeling."
WARNING
The free-wheeling valve must be closed
tightly (clockwise) for normal operation.
WARNING
Do not manually disengage brakes if the
aerial platform is on a slope.
Figure 2-8. Brakes
WARNING
Brakes must be manually disengaged for
pushing, winching or towing.
SJIII DC Electric