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Chapter 8 – Prestart Inspection
Emergency Lowering System
Use the following procedure to test the emergency low-
ering system:
Danger
Pinch points may exist between moving components.
Death or serious injury will result from becoming
trapped between components. Stand clear of moving
components while test operating the machine.
1. Use the lower controls, fully raise the platform. Push
the emergency stop button inward.
2. Locate the emergency lowering control.
The lever for the S3215L/S3215E/S3219E is mounted
at the front of the aerial platform (refer to Figure 8.13).
Emergency
Lowering Lever
Figure 8.13 – Front of Machine
The handle for the S3220E/S3226E/S4726E/S4732E is
mounted at the rear of the aerial platform (refer to Figure
8.14).
Emergency Lowering Handle
Figure 8.14 – Rear of Machine
32
Pinch points may exist between moving components.
Death or serious injury will result from becoming
trapped between components. Make sure all person-
nel stand clear while lowering the platform with the
emergency lowering lever/handle.
3. Make sure there is nothing in the way to obstruct the
platform when it lowers. Stand clear of the scissors
structure.
4. Stand clear of the scissors structure.
S 3 2 1 5 L / S 3 2 1 5 E / S 3 2 1 9 E – p u s h d o w n -
y
ward on the emergency lowering lever at the
front of the machine to lower the platform.
S3220E/S3226E/S4726E/S4732E – pull outward
y
on the emergency lowering handle at the rear of
the machine to lower the platform.
5. The platform will begin to lower as the lever/handle
is actuated. Release the lever/handle to stop the
platform from lowering.
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. 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.
4. Pay close attention to welds in areas where changes
in cross section take place and near the attachment
points of highly loaded components.
Rollers and Slide Blocks
To inspect the rollers and slide blocks:
1. Visually inspect the scissors arm rollers and slide
blocks (refer to Figure 8.15). They must be free to
move without obstruction. There is one roller and
slide block on each side of the chassis.
S3215L/S3215E/S3219E/S3220E/S3226E/S4726E/S4732E – 1500834
Danger
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