Snorkel TB37 2001 - Manual (Page 31)

Inspect the covers while operating the machine to en-
sure they are securely fastened and completely cover
the cylinder rod. 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
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. Pay
particular attention to boom welds. The area to be in-
spected should be clean and free of dirt and grease.
Look for visible cracks in the weld and at the weld to par-
ent material joint. A bright light may be used to provide
adequate visibility of the inspection area.
Slide Pads
The main boom has slide pads (refer to Figure 7.18) be-
tween the main and tip boom sections.
Figure 7.18—Slide Pads
Use the lower controls to raise the main boom about 6
′
(1.8 m). Extend the tip boom about 1
′
(30 cm).Visually
inspect the slide pads to make sure they are in place
and are not obviously loose.
Inspect the surface where the pads contact the inter-
mediate and tip booms. The paint must be in place with
no signs of bare metal.
Fasteners
Visually inspect all fasteners to see that none are miss-
ing or loose.
Pay particular attention to all of the bolts, nuts, rollpins,
collars, and snap rings that connect the booms and cyl-
inders. They should all be present, tight, and not dam-
aged in any way.
Raise the main boom to access the rotation bearing
bolts in the turntable (refer to Figure 7.19).
Figure 7.19—Rotation Bearing Bolts
Inspect the rotation bearing bolts to ensure that none
are missing, damaged, or loose.
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 7.20) includes the
top rail, mid rail, toeboards and a gravity gate or optional
swinging gate.
Figure 7.20—Guardrail System
Inspect all components of the guardrail system. The
rails and toeboards must all be in place and free of any
damage or deformation. Visually check the rail and
toeboard welds for cracks. All bolts and nuts fastening
the platform in place must be present and not show any
signs of looseness.
Inspect the gravity gate to be sure it is present, is not
damaged, and moves freely.
Inspect the optional swinging gate to see that it swings
freely, closes firmly, and is not deformed in any way.
Make sure the spring closes and secures the gate when
the gate is closed.
Chapter 7. Prestart Inspection
TB37 – 0172094 page 7 - 7
Rotation Bearing Bolts
Mid Rail
Toeboard
Lanyard Anchor
Gravity Gate
Platform
Foot Switch
Top Rail
Slide Pads