Snorkel TB85J Fixed Axle CE - Manual (Page 50)

Chapter 8 – Operation
46 TB80/TB85J Fixed Axle – 0112823EE
that the machine is about to start. Turn the switch to
start, then release it to on. The engine will not start if
the switch is left in the on position for 30 seconds or
longer before turning it to start. The switch must be
turned back to off before the engine will start.
8. Let the engine warm to operating temperature.
Boom Operation
Use the following procedure to operate the turntable,
boom, or platform functions.
1. Step down on the platform foot switch (refer to Figure
8.4). This switch must be held down to operate the
upper controls.
Figure 8.4 – Platform
2. Hold the appropriate control in the desired direction.
Always look in the direction of movement.
3. Releasing the control to its neutral position, or re-
leasing the foot switch will stop movement.
Driving and Steering
A
Danger
The aerial platform can tip over if it becomes un-
stable. Death or serious injury can result from a tip-
over accident. Do not drive an elevated aerial plat-
form on soft, uneven, or sloping surfaces. Do not
drive the machine on grades that exceed 30 per-
cent.
For operation on grades up to 30 percent, it is recom-
mended that the main boom be near horizontal and the
jib on TB85J machines elevated just enough to provide
adequate ground clearance.
A 30 percent grade is a 0.91 m (36
″
) vertical rise in 3.05 m
(10
′
) horizontal length.
Avoid driving with the platform over the front end of the
chassis. In this position the machine is difficult to control
because:
• drive and steer control movements and their result-
ing machine movements are reversed.
• when driving fast, sudden turns or stops produce more
severe reactions to platform occupants.
• more turning space is required to prevent the plat-
form from colliding with obstacles several feet be-
yond the path of the tires.
A
Warning
Death or serious injury can result from improperly
driving or steering the aerial platform. Read and
understand the information in this manual and on
the placards and decals on the machine before op-
erating the aerial platform on the job.
The blue and yellow arrows on the chassis indicate the
direction the chassis will move when the drive or steer
control is moved toward the corresponding color.
When the machine is in the stowed position, with the
booms centered between the rear wheels, the direction
of drive and steer control movement corresponds with the
direction of chassis movement.
When the turntable is rotated from the stowed position,
with the booms to either side of or in front of the chassis,
the direction of control movement does not correspond
with the direction of chassis movement.
To avoid confusion, always drive to the work area or move
between work areas with the turntable and booms in the
stowed position. After arriving at the work area, the booms
may be positioned to the side or the front of the chassis
for final positioning. Always look in the direction of move-
ment as indicated by the directional arrows on the chas-
sis.
Use the following procedure to operate the drive and steer
functions.
1. Determine the desired drive range for the specific driv-
ing conditions. Place the switch in the appropriate
position to achieve the desired drive wheel operation.
• Use high range (two wheel drive) when traveling
across firm, flat, level surfaces. High range can
only be activated when the booms are stowed. High
range is for high speed, low torque operation.
• Use mid range (four wheel drive) when traveling
across soft surfaces or those with small inclines.
Mid range can only be activated when the booms
are stowed. Mid range is for medium speed, high
torque operation.
Lanyard
Anchors
Platform Foot
Switch