Upper Control Station; Guardrail System; Lanyard Anchors; Operating Controls - Snorkel A46JRT Operator's Manual

Rotation Bearing Bolts
Figure 7.10 – 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 7.11):
• A top rail
• A mid rail
• Three entry gates: one on each side and one rear
• Toeboards around the sides of the platform.
Gravity Gate

Lanyard Anchors

Platform Foot
Switch
Figure 7.11 – 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.
2. Visually inspect the rail and toeboard welds for
cracks.
3. Visually inspect all bolts and nuts fastening the plat-
form in place. They must be present and not show
any signs of looseness.
A46JRT – 0261169
Outer Race
Access Holes
Top Rail
Gravity Gate
Mid Rail
Toeboard
Chapter 7 – Prestart Inspection
4. Inspect the gravity gates to be sure they are present,
are not damaged, and move freely.
Lanyard Anchors
There are two lanyard anchors below the upper control
panel (refer to Figure 7.11).
To inspect the lanyard anchors:
1. Visually inspect the lanyard anchors to make sure
they are in place and are not deformed.
2. 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.

Operating Controls

Use the following procedure to operate the machine from
the upper controls:
1. At the lower controls, pull the emergency stop button
outward and place the control selector handle in the
upper control position.
2. At the upper controls (refer to Figure 7.12), pull the
emergency stop button outward.
Riser Platform
Rotation
Elevation
Handle
Handle Handle
Jib
Platform
Rotation Elevation
Handle Handle
Figure 7.12 – Upper Controls
3. Start the engine and let it warm to operating tempera-
ture.
Danger
Pinch points may exist between moving components.
Death or serious injury will result from becoming
trapped between components, buildings, structures,
or other obstacles. Make sure all personnel stand
clear of the aerial platform while performing the pre-
start inspection.
Boom
Drive
Level Elevation
Joystick
Handle
Emergency
Stop Button
Boom
Extension
Snorkel Guard
Handle
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