Calibrating Wheel Speed Sensor

NOTE: Radar sensor overrides wheel speed sensor when radar sensor is installed. If using radar sensor, operator should calibrate wheel speed sensor for precautionary reasons. When calibrating wheel speed sensor, disconnect radar sensor and install dust cap on wiring harness.

When using wheel speed sensor, the radar symbol SHOULD NOT appear on line A of RUN pages one or two if default RUN pages are used.

1. Fill the solution tank half full of water or solution.

2. Measure a 122 m (400 ft) course with tape measure on flat terrain that is most typical of field conditions (loose, medium, hard-packed). Do not use end rows due to possible varying ground conditions that can affect calibration.

3. Mark both beginning and end of course with markers that are visible from cab.

4. Allow enough room at each end of course for sprayer to travel entire course without speeding up or slowing down.

5. Select speed of 10 mph. Maintain constant speed over entire course.

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6. Press "SETUP" to display SETUP menu.

7. Press letter button next to "Sprayer Vehicle".

8. Press letter button next to "Vehicle Calibrate".

9. Press letter button next to "Wheel Speed Sensor Calibrate".

10. Verify that calibration value is within specified calibration ranges for tires below.

Calibration value ranges:

Standard/Narrow Tires: 48-58

Flotation Tires: 48-58

11. If calibration value is not within range, press letter button next to "Calibration Value". Enter a value within range.

12. Press letter button next to "Calibration Value" to save entered value.

13. Start driving somewhere before beginning of the course and reach speed at which spraying will most likely occur.

14. While maintaining that speed, press letter button "C" to turn wheel counter "ON" when the sprayer reaches the beginning of the course.

15. Keep constant speed over the course, and when sprayer reaches the end marker, press letter button "C" to turn counter "OFF".

16. Record calibration value that appears on line E.

17. Repeat steps 13-15 two more times and record calibration values.

18. Average the three calibration values.

19. Press letter button next to "Calibration Value". Enter calibration average.

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20. Press letter button next to "Calibration Value" to save entered value.

21. To verify calibration value, measure the course with the distance counter. (See Operating Distance Counter in this section.)

22. If the "Distance" is anything more or less than 120-123 m (395-405 ft), refine the previous wheel calibration number as follows:

Wheel Calibration Number x Recorded distance ÷ by 122 m (400 ft) = New Wheel Calibration Number

23. Enter new wheel calibration number.

24. Repeat Steps 20 and 21 if necessary.

Calibration value ranges:

Standard/Narrow Tires: 48-58

Flotation Tires: 48-58

NOTE: If radar was disconnected, connect after completing calibration of wheel speed sensor.

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