Snorkel TB37 2001 - Manual (Page 29)

Figure 7.13—Tires and Wheels
The aerial platform may have air or foam filled tires. Air
filled tires have a tire pressure decal near the valve
stem. The valve stem also has a valve core like an auto-
mobile tire. Foam filled tires do not have a pressure de-
cal or a valve core. Different types of tires have different
inspection requirements.
Air Filled
Check air filled tires very carefully for wear, cuts, punc-
tures, or imbedded objects.
The aerial platform can tip over if it becomes unsta-
ble. Death or serious injury can result from a
tip-over accident. Do not operate the aerial platform
if a tire is leaking air or is in poor condition where a
blow out could occur.
Test the air pressure with a pressure gauge to make
sure the tires are properly inflated. Check the tires sev-
eral times throughout the day to see that they are prop-
erly inflated.
Foam Filled
Inspect for large holes or cuts where foam is coming out
of the tire. Look for large imbedded objects, such as an-
gle iron, that can rip a tire open.
Punctures caused by bolts, screws, or nails are not a
problem for foam filled tires.
Lower Control Station
With no personnel in the platform, test the operation of
each control from the lower controls (refer to Figure
7.14).
Figure 7.14—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.
6. Test the operation of each function in both direc-
tions.
Note
When checking the turntable rotation function in the
clockwise direction, the turntable will rotate toward you.
Emergency Stop
Push the emergency stop safety guard down to turn off
the engine. The lower control functions should not oper-
ate 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 in the emer-
gency power position and the ground controls switch in
the on position to operate the aerial platform from the
lower controls using the emergency power system.
Chapter 7. Prestart Inspection
TB37 – 0172094 page 7 - 5
Emergency
Stop Switch
Emergency
Power Switch
Ground Controls
Switch
DANGER
DANGER