Snorkel TB50 - Manual (Page 43)

Chapter 7 – Prestart Inspection
TB42/TB50 – 0074923 39
Figure 7.19 – Top of Main Boom at Base End
Also inspect the wire ropes just inside the base end of
the main boom (refer to Figure 7.20).
Figure 7.20 – Base End of Main Boom
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 main boom to access the rotation bearing
bolts in the turntable (refer to Figure 7.21).
Figure 7.21 – 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 7.22):
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.
Figure 7.22 – Platform
To inspect the guardrail system:
1. Inspect all components of the guardrail system.
Make sure the rails and toeboards are all in place
and free of any damage or deformation.
2. Visually inspect the rail and toeboard welds for
cracks.





Rotation Bearing Bolts
Toeboard
Platform Foot
Switch
Lanyard
Anchors
Gravity
Gate
Top Rail
Mid Rail