Snorkel S2033CE - Manual (Page 29)

Chapter 8 – Prestart Inspection
S2033 – 330003EE 25
Figure 8.12 – Pothole Protector Skid
4. Raise the platform while watching movement of the
skids. The skids should lower to approximately 2 cm
( 3 /
4
″) ground clearance when the platform is raised
approximately 61 cm (24 ″).
5. Fully lower the platform while watching movement of
the skids. The skids should raise to their stowed
position, with about 8.3 cm (3 1 /
4
″) ground clearance
when the platform is fully lowered.
6. Place a 3.8 cm (1 1 /
2
″) thick board, such as a 2 x 4,
under the skid on the right side (refer to Figure 8.13).
Figure 8.13 – Pothole Protector Skid
7. The board will prevent the skid from lowering fully.
Raise the platform. When the skid contacts the board,
the platform should stop raising and an alarm should
sound at approximately 2 m (7 ′) platform floor height.
The alarm should then sound when the platform lift
switch is activated and the platform should not raise.
8. Lower the platform. Place the board under the skid
on the left side.
9. Raise the platform. When the skid contacts the board,
the platform should stop raising and an alarm should
sound at approximately 2 m (7 ′) platform floor height.
The alarm should then sound when the platform lift
switch is activated and the platform should not raise.
A
Warning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Do not alter,
disable, or override any safety device.
10. If the platform raise function is not disabled, or the
alarm does not sound remove the aerial platform from
service until the problem is corrected.
Emergency Lowering
Using the lower controls, fully raise the platform. Locate
the emergency lowering handle (refer to Figure 8.14) at
the front of the aerial platform.
While standing clear of the scissors structure, pull the
handle outward. The platform will begin to lower as the
lever is pushed down. Release the handle to stop.
Figure 8.14 – Front of Chassis
Structures
Visually inspect all mechanical structures including the
weldments and related components. It is important to in-
spect the fasteners that connect the components.
Weldments
Visually inspect all weldments for abnormal wear, abra-
sion, or deformation that could cause interference between
moving parts.
Inspect the welds on the structural components. The area
to be inspected should be clean and free of dirt and grease.
Look for visible cracks in the weld and at the weld to
parent material joint. A bright light may be used to provide
adequate visibility of the inspection area.
Pay close attention to welds in areas where changes in
cross section take place and near the attachment points
of highly loaded components.
Pothole Protector Skid
Pothole Protector Skid
2 x 4
Emergency
Lowering Handle