Command Center Vehicle Speed Calibration (Manual) NOTE: The Vehicle Speed Calibration (Manual) procedure is not to be used with John Deere Dual Beam Radar. D C B Automatic vehicle calibration is used with John Deere Dual Beam radar or GPS signal device. See VEHICLE SPEED CALIBRATION (AUTOMATIC) in this Section. RXA0085829 —UN—27JAN06 On tractors equipped with no radar or single beam radar, a change in tire size or loading of tractor can affect wheel and ground speed which requires recalibration. A This procedure will compute tire rolling circumference value and radar proportion constant for the wheel and ground speed displays. A—Settings Switch B—Command Dial C—Select Switch D—Display 1.
Install implement and ballast tractor as required for configuration. When Select Switch is pressed, CommandCenter will display alternating messages shown in Display 1 and Display 2. 2. On a hard level dry surface, mark out a 400 ft. (122 m.) course. Place easily visible markers at the start and end of the course. Display 1 Display 2 Speed Cal 400 ft (122 m) end Exit Course, Driving 2 mph Speed Cal 400 ft (122 m) end Press Select At Marker 3. Drive tractor up to, but do not cross, course start line. 4. Press vehicle Settings Switch (A) to view menu items on Display (D). Rotate Command Dial (B) to highlight Speed Cal and press Select Switch (C). 8.
Drive entire course length at 3.2 km/h (2 mph) and press Select Switch when crossing the course end marker. 5. Display will read: 400 ft (122 m) NOTE: Most common reason failed message is received is because tractor speed falls below 3.2 km/h (2 mph). Increase speed in 1.6 km/h (1 mph) increment, not to exceed 9.6 km/h (6 mph) and attempt procedure again. It may be necessary to consult your John Deere dealer for assistance if calibration is not successful. Automatic Back 6. Highlight 400 ft (122 m) , then press Select Switch. When Select Switch is pressed, CommandCenter will display alternating messages shown in Display 1 and Display 2.
Display 1 Display 2 When Select Switch is pressed, CommandCenter will display: Speed Cal 400 ft (122 m) start Enter Course, Driving 2 mph Speed Cal 400 ft (122 m) start Press Select At Marker If Calibration is Successful If Calibration is Unsuccessful Speed Cal Calibration Successful Speed Cal Calibration Failed 7. Set tractor speed to 3.2 km/h (2 mph) and press Select Switch as tractor crosses start line. 9. If failed message is received, perform procedure again. RW29387,000005B 1908SEP081/1 1614 122208 PN=55