Hardware Installation Guide 39
4
Wheel Angle Sensor (WAS) Installation
This Wheel Angle Sensor Installation chapter information is provided in the following sections:
• Wheel Angle Sensor Installation Guidelines
• Wheel Angle Sensor Installation Tasks
Wheel Angle Sensor Installation Guidelines
The following guidelines should be considered before beginning the Wheel Angle Sensor installation process:
1. Install the wheel angle sensor in a protected position to avoid damage from tall crops or debris.
2. Orient the wheel angle sensor so that the potentiometer is pointing upwards to avoid water intrusion.
3. The linkage arm should have enough clearance to rotate freely from a full left to a full right turn.
4. Adjust the length of the linkage arm until you get approximately 3000 counts during steering calibration. If you are doing
an installation on a new machine, start off with longer linkage arm lengths and shorten as necessary to get approximately
3000 counts during steering calibration.
5. To avoid damage to the potentiometer, do not rotate beyond the travel stops (~180 degrees).
6. To make fine adjustments to the potentiometer angle, loosen the two screws securing the potentiometer and rotate the
potentiometer.
7. The wheel angle sensor bracket must be well secured to the machine to avoid changes in position after the steering calibra-
tion has been completed.
8. Avoid installing the wheel angle sensor on parts that can move or rotate independently of the steering wheels, such as the
steering cylinders and the tie rods with ball joints.
9. Repeat the steering calibration after any changes to the position of the wheel angle sensor or linkages.
10. Many tractors, combines and sprayers have custom designed brackets and linkages available from AutoFarm for the wheel
angle sensor. On all other machines you must fabricate special mounting brackets according to available mounting points
on the steering axle.
11. Route the sensor cable in a safe position away from moving parts or hot parts.
12. Secure the sensor cable with nylon cable ties.
13. Tighten all screws, bolts and nuts after the wheel angle sensor has been installed and tested.
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