Structures; Weldments; Rollers And Slide Blocks; Fasteners - Snorkel S2255RT Operator's Manual

Figure 7.8 – Bleed Down Handle
Danger
Pinch points may exist between moving compo-
nents. Death or serious injury will result from be-
coming trapped between components. Make sure
all personnel stand clear while lowering the platform
with the emergency lowering 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. Pull outward
on the emergency lowering handle at the rear of
the machine to lower the platform.
5. The platform will begin to lower as the handle is
actuated. Release the 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.
S2255RT S2755RT - 15286-1
Chapter 7 – Prestart Inspection

Rollers and Slide Blocks

To inspect the rollers and slide blocks:
1. Visually inspect the scissors arm rollers and slide
blocks (refer to Figure 7.9). They must be free to
move without obstruction. There is one roller and
slide block on each side of the chassis.
Figure 7.9 – Scissor Rollers
2. Raise the platform from the lower controls and visu-
ally inspect the slide blocks underneath the front of
the platform (refer to Figure 7.10). There is one slide
block on each side of the platform. The slide blocks
must be in good condition and free to move without
obstruction.
Figure 7.10 – Slider Blocks

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.

Upper Control Station

Inspect the platform and upper controls only if all func-
tions operated properly from the lower controls.

Guardrail System

The guardrail system includes (refer to Figure 7.11):
31