Snorkel S1930-snAP05168 - Manual (Page 28)

Chapter 8 – Prestart Inspection
24 S1930 – 0361527
Figure 8.16 – Platform Slide Blocks
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.
Fasteners
Visually inspect all fasteners to see that none are miss-
ing or loose.
Pay particular attention to all of the bolts, nuts, roll pins,
collars, and snap rings that connect the scissors arms.
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 (refer to Figure 8.17) includes the
top rail, mid rail, toeboards and an entry chain or optional
swinging gate.
Figure 8.17 – Guardrail System
Inspect all components of the guardrail system. The rails
and toeboards must all be in place and free of any dam-
age or deformation. Visually check the rail and toeboard
Structures
Visually inspect all mechanical structures including the
weldments and related components. It is important to
inspect the fasteners that connect the components.
Weldments
Visually inspect all weldments for abnormal wear, abra-
sion, or deformation that could cause interference be-
tween 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 pro-
vide 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.
Slide Blocks
Visually inspect the scissors arm slide blocks (refer to
Figure 8.15). The slide blocks must be free to move with-
out obstruction. There is one slide block on each side of
the chassis.
Figure 8.15 – Scissors Arm Slide Blocks
Raise the platform from the lower controls to visually in-
spect the slide blocks underneath the front of the plat-
form (refer to Figure 8.16).
Slide Block
Top Rail
Mid Rail
Toeboard
Entry Chain
Slide Block