Snorkel S2633 - Manual (Page 29)

Chapter 8 – Prestart Inspection
S2633 – 8210048 25
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.
Slide Blocks
To inspect the slide blocks:
1. Visually inspect the scissors arm slide blocks. They
must be free to move without obstruction. There are
two slide blocks at the rear of the chassis (refer to
Figure 8.10).
Figure 8.10 – Rear of Machine
2. Raise the platform from the lower controls and visually
inspect the slide blocks underneath the rear of the
platform. They must be free to move without obstruc-
tion. There are two slide blocks underneath the rear
of the platform (refer to Figure 8.11).
Figure 8.11 – Rear of Platform
Fasteners
To inspect the fasteners:
1. Visually inspect all fasteners to see that none are
missing or loose.
2. Inspect all of the bolts, nuts, rollpins, collars, and
snap rings. They should all be present, tight, and not
damaged in any way.
Slide Blocks Slide Blocks
Slide Blocks Slide Blocks
A
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury could result from such accidents. Fully close
the emergency lowering valve before operating the
aerial platform.
6. Make certain the knob is fully released and the emer-
gency lowering valve is fully closed before operating
the aerial platform.
Lowering Alarm
The machine is equipped with a lowering alarm. Lower
the platform to ensure that the alarm sounds to warn
personnel in the area to stand clear.
All Motion Alarm
The machine may be equipped with an all motion
alarm.
Operate the machine functions to ensure that the alarm
sounds to warn personnel in the area that the aerial
platform is in motion.
Flashing Lights
The machine may be equipped with optional fl ashing
lights mounted on each side of the machine.
To inspect the fl ashing light:
1. At the lower controls, twist the emergency stop button
clockwise and turn the start switch on.
2. At the upper controls, twist the emergency stop button
clockwise.
3. Operate any control function and visually check to
see that the light is fl ashing approximately one fl ash
per second.
Note
There is not an off switch for the fl ashing 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.