Structures; Weldments; Boom Slide Pads; Fasteners - Snorkel AB60J Operator's Manual

Chapter 7 – Prestart Inspection
2. Make sure there are no holes in the covers.

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.
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 weld and at the weld
to parent material joint. 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 7.16)
between the main and tip boom sections.
Slide Pads
Figure 7.16 – Boom Sections
To inspect the slide pads:
1. Use the lower controls to position 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.
36

Fasteners

To inspect the component 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.
3. Raise the riser boom to access the inner race rota-
tion bearing bolts in the turntable (refer to Figure
7.17). The outer race bolts can be viewed through
the openings in the turntable. Rotate the turntable
to inspect all of the outer race bolts.
Figure 7.17 – Inside Turntable
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 7.18):
A top rail

A mid rail

A gravity gate or optional swinging gate

Optional side entry gravity gate

Toeboards around the sides of the platform.

Rotation Bearing Bolts
AB60J – 0181972