Snorkel A38E-sn006001+ - Manual (Page 32)

Chapter 8 – Prestart Inspection
28 A38E – 8210243
3. Raise the riser boom to access the inner race rotation
bearing bolts in the turntable (refer to Figure 8.14).
The outer race bolts can be viewed through the open-
ings in the turntable. Rotate the turntable to inspect
all of the outer race bolts.
Figure 8.14 – Rotation Bearing Bolts
4. Inspect the inner and outer race rotation bearing
bolts to ensure that none are missing, damaged, or
loose.
Upper Control Station
Inspect the platform and upper controls, after verifying all
functions operated properly from the lower controls.
Guardrail System
The guardrail system includes (refer to Figure 8.15):
A top rail
A mid rail
Entry gate
Toeboards around the sides of the platform
Figure 8.15 – Guardrail System
To inspect the guardrail system:
1. Visually inspect all components of the guardrail
system. Make sure the rails and toeboards are all in
place and free of any damage or deformation.
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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.
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.
Boom Slide Pads
The main boom has slide pads (refer to Figure 8.13)
between the main and tip boom selections.
Figure 8.13 – Slide Pads at Tip End of Boom
To inspect the slide pads:
1. Use the lower controls to raise the main boom near
horizontal. Extend the tip boom about 1′ (30 cm).
2. Visually inspect the slide pads to make sure they are
securely fastened to the main boom.
3. Inspect the surface where the pads contact the tip
boom. The paint must be in place with no signs of
bare metal.
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 that connect the booms and cylinders.
They should all be present, tight, and not damaged
in any way.
Entry
Gate
Top Rail
Mid Rail
Toeboard
Slide Pads