Snorkel AB46JE - Manual (Page 33)

Chapter 8 – Prestart Inspection
AB46JE – 0260072 29
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 plat-
form.
3. Start the machine and raise the riser boom above
horizontal, approximately 15 to 20 degrees.
4. Remove the drive control compartment cover. The
level sensor is in the right side (refer to Figure
8.10).
5. Pull the level sensor to the side as far as possible to
activate the tilt alarm.
Figure 8.10 – Level Sensor
A
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury could result from such accidents. Do not alter,
disable, or override any safety device.
6. If the alarm does not sound, remove the machine
from service until the problem is corrected.
7. Lower the riser boom.
Flashing Light
The machine may be equipped with an optional flashing
light mounted to the top of the counterweight.
To inspect the flashing light:
1. Turn the battery disconnect switch on.
2. At the lower controls, pull the emergency stop button
outward and turn the start switch on.
3. Operate any control function and visually check to
see that the light is flashing approximately one flash
per second.
Level Sensor Level Sensor
Note
There is not an off switch for the flashing light.
Structures
Visually inspect all weldments and related components.
It is important to inspect the fasteners that connect the
components.
Weldments
To inspect the weldments:
1. Visually inspect all weldments for abnormal wear,
abrasion, or deformation that could cause interfer-
ence between moving parts.
2. Inspect the welds on the structural components.
Pay particular attention to boom welds. The area to
be inspected should be clean and free of dirt and
grease.
3. Look for visible cracks in the welds and at the weld
to parent material joints. A bright light may be used
to provide adequate visibility of the inspection area.
Boom Slide Pads
The main boom has slide pads (refer to Figure 8.11)
between the main and tip boom sections.
Figure 8.11 – Slide Pads at Tip End of Boom
To inspect the slide pads:
1. Use the lower controls to raise the main boom near
horizontal. Extend the tip boom about 1 ′ (30 cm).
2. Visually inspect the slide pads to make sure they are
securely fastened to the main boom.
3. Inspect the surface where the pads contact the tip
boom. The paint must be in place with no signs of
bare metal.
Slide Pads Slide Pads