Snorkel T85J - Manual (Page 35)

Chapter 7 – Prestart Inspection
TB80/TB85J Fixed Axle – 0112792 31
Operating Controls
Use the following procedure to operate the machine from
the lower controls.
1. Turn the battery disconnect switch on.
2. At the lower controls, pull the emergency stop but-
ton outward. Place the control selector switch in the
lower control position.
3. Insert the key into the master switch and turn the
switch to start until the engine starts, then release.
4. Let the engine warm to operating temperature.
5. Hold the ground operation switch upward.
A
Danger
Pinch points may exist between moving compo-
nents. Death or serious injury can result from be-
coming trapped between components, buildings,
structures, or other obstacles. Make sure all person-
nel stand clear of the aerial platform while perform-
ing the prestart inspection.
6. Test the operation of each function in both directions.
Note
When checking the turntable rotation function in the
clockwise direction, the turntable will rotate toward you.
Emergency Stop
Push the emergency stop button inward to turn off the
engine. The lower control functions should not operate
with the emergency stop in this position.
Emergency Power
Place the battery disconnect switch, the emergency stop
switch, and the master switch in the on position.
Hold the engine/emergency power switch down and the
ground operation switch upward to operate the aerial plat-
form from the lower controls using the emergency power
system.
Emergency Lowering
The main boom can be lowered in an emergency using
the emergency lowering knob. The emergency lowering
knob is at the base of the main boom lift cylinder.
Use the following procedure to test the emergency lower-
ing system.
1. Use the lower controls to raise the main boom.
2. Turn the engine off.
A
Danger
Pinch points may exist between moving compo-
nents. Death or serious injury can result from be-
coming trapped between components. Stand clear
of moving components while test operating the
machine.
3. Slowly turn the knob (refer to Figure 7.13) counter-
clockwise to open the bleed down valve. The boom
should slowly lower by gravity.
Figure 7.13 – Emergency Lowering Knob
A
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
4. Turn the knob clockwise to close the cylinder bleed
down valve.
Level Sensor
Use the following procedure to test the level sensor.
1. Position the aerial platform on a smooth, flat, level
surface.
2. Remove all persons and materials from the platform.
3. Start the engine and raise the main boom just above
horizontal.
4. Open the rear door on the left side of the machine to
access the level sensor (refer to Figure 7.14).
Emergency
Lowering Knob