Topcon Motorgrader, Operator'S Manual

Page: 56 / 172

Operation
Motorgrader System Five Operator’s Manual
2-34
• Rotation Sensor
A Rotation Sensor is mounted on the hydraulic swivel in the
center of the circle.
It measures the rotation angle of the moldboard. Since the desired
slope is perpendicular to the edge of the road, the rotation sensor
measures the blade rotation angle to compensate to get the correct
cross slope.
Figure 2-41.
• Mainfall Sensor
Mounted to the frame of the machine is the Mainfall Sensor. It
has an electronic level vial just like the Blade Slope Sensor. The
Mainfall Sensor measures the slope of the machine going up-hill
or down. When the blade is rotated, the mainfall prevents the
leading edge from undercutting when going uphill and the trailing
edge from undercutting when going downhill.
Figure 2-42.
Curbline
2.0% Slope