Snorkel AB80J - Manual (Page 26)

Chapter 6 – Controls
22 AB80J/AB85J – 0420453
Riser Switch
The riser switch is used to raise or lower the riser booms.
The switch is spring returned to the center off position.
Hold the switch up to raise the riser booms. Hold the
switch down to lower the riser booms.
Boom Elevation Switch
The boom elevation switch is used to raise or lower the main
boom. As the main boom is raised on AB85J machines, the
tip boom is extended a maximum of 30″ (76.2 cm). The
switch is spring returned to the center off position.
Hold the switch up to raise the main boom. Hold the switch
down to lower the main boom.
Boom Extension Switch
The boom extension switch is used to extend or retract
the booms. The switch is spring returned to the center
off position.
Hold the switch to the right to extend the booms. Hold
the switch to the left to retract the booms.
Boom Speed Knob
Use the boom speed control knob to control the speed
of the following boom functions.
• Main boom raise/lower
• Main boom extend/retract
• Jib rotate – AB85J only
• Turntable rotation clockwise/counterclockwise
Set the knob to slow (turtle) when beginning a boom
movement. The speed may be increased by slowly rotat-
ing the knob toward fast (rabbit). For smooth operation,
rotate the knob to slow when ending boom movement.
Jib Rotation Switch – AB85J Only
The jib rotation switch is used to rotate the jib relative to
the end of the tip boom. The switch is spring returned to
the center off position.
Hold the switch up to rotate the jib counterclockwise. Hold
the switch down to rotate the turntable clockwise.
Figure 6.2 – Lower Controls
Circuit Breaker Reset Buttons
Fuel Switch
Engine Speed Switch
Jib Rotation Switch
Hydraulic System
Warm-up Switch
Emergency Stop Button
Start Switch
Control Selector Switch
Ground Operation Switch
Engine/Emergency Power Switch
Jib Articulation Switch
Platform Rotation Switch
Riser Switch Boom Elevation Switch
Platform Level Switch
Boom Speed Knob
Boom Extention Switch Rotation Switch