Rough Terrain Electric Scissors
December 2007 Page 33
Section 2 - Familiarization Procedures
It is the responsibility of the operator to read, completely understand and follow all instructions and warnings
contained in this operating manual and on the aerial platform.
FAMILIARIZATION
2.5 Winching and Towing Procedure
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 obstacle. In
such cases, operation must be extremely
smooth with no sudden movements and
must not exceed a speed of 50 mm/sec.
WARNING
When pushing, winching or towing, do
not exceed 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.
2.5-1 To Release Free-wheeling Valve
1. Ensure aerial platform is on level ground. Chock
or block the wheels to prevent aerial platform
from rolling.
1
Figure 2-6. Free-wheeling Valve
2. Free-wheeling Valve - Turning the 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.
2.5-2 To Release Brakes Manually
Releasing the brakes manually depends on the brake
system that is provided on the aerial platform.
WARNING
Do not manually disengage brakes if the
aerial platform is on a slope.
1
2
Figure 2-7. Disc Brakes System
NOTE
Brakes must be manually disengaged for
pushing, winching or towing.
1. Ensure aerial platform is on level ground. Chock
or block wheels to prevent aerial platform from
rolling.
2. Turn main power disconnect switch to “ ” off
position.
3. Locate brake auto reset valve plunger (item 1) and
brake hand pump (item 2) at the main manifold in
the motor/hydraulic compartment.
4. Push in brake auto reset valve plunger.
5. Grasp brake hand pump and rapidly depress
until firm resistance is felt. The brakes are now
released.
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