Tires and Wheels
Visually inspect the tires (refer to Figure 8.9). They
should be smooth without any cuts, gouges, or missing
rubber that might affect aerial platform stability.
Figure 8.9—Tires and Wheels
Check the wheel lug nuts to see that none are missing,
damaged, or loose.
Parking Brakes
Inspect the brake release cams for rust, dirt, and proper
orientation. When the brakes are engaged the release
cam should swing freely when pushed with a finger and
be oriented as shown in Figure 8.10.
Figure 8.10—Brake Release Cam
Ground Strap
Make certain the ground strap (refer to Figure 8.10) is se-
curely fastened to the chassis. It should be long enough
to contact the ground surface to eliminate static electric-
ity from the machine.
Lower Control Station
With no personnel in the platform, test the operation of
each control from the lower control station (refer to Fig-
ure 8.11).
Figure 8.11—Lower Controls
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, lift the emergency stop safety
guard up, and push the toggle switch up to the on
position.
3. Insert the key into the master switch and turn the
switch to start until the engine starts, then release
it.
4. Let the engine warm to operating temperature.
5. Hold the ground controls switch in the on position.
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 per-
sonnel stand clear of the aerial platform while per-
forming the prestart inspection.
Test the operation of each function in both directions.
Test the operation of the platform raise/lower switch in
both directions.
Place the battery disconnect switch in the off position.
The platform should not raise or lower with the discon-
nect in this position.
Emergency Stop
Push the emergency stop button in to turn off the electri-
cal power. The lower control functions should not oper-
ate with the emergency stop in this position.
Lowering Alarm
Raise the platform and then lower it to ensure that the
alarm sounds to warn personnel in the area that the
platform is lowering.
8 - 4
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Chapter 8. Prestart Inspection
Ground Strap
Cam
A
DANGER
Control Selector Switch
Emergency Stop Button
Platform
Raise/Lower Switch
