33
APPENDIX 1
WHEEL DRIVE SPEED SENSOR INSTALLATION AND CALIBRATION
PROCEDURE
1.
MOUNTING WHEEL DRIVE SPEED SENSOR
The Wheel Drive Speed Sensor consists of four magnets, a switch assembly with
cable, and mounting hardware.
Sequence of mounting Speed Sensor:
l)
Select a non-driven wheel (left front tractor wheel or implement wheel).
2)
Check for predrilled holes in rim. If not predrilled, see "RIM DRILLING
INSTRUCTIONS FOR WHEEL DRIVE SPEED SENSOR".
3)
Mount the four magnets to the inside of rim and tighten (See Figures below).
Magnets must be mounted in alternating red-black order.
4)
Mount switch assembly to stationary column with the hardware provided (See below).
The switch assembly need not pivot with the wheel.
5)
Position switch assembly so that as the wheel rotates the magnets pass across the
center of the black, molded switch assembly.
6)
Clearance gap between magnets and switch assembly must be between 1/4 inch [6 mm]
and 1 inch [25 mm]. With wheels pointed straight ahead, rotate wheel to ensure
gap is correct. Make sure vehicle wheels can be turned to their extremes in each
direction without the magnets hitting the switch assembly.
7)
Tighten switch assembly bracketry.
8)
Secure cable to column with plastic cable ties.
MAGNET LOCATION
MAGNET ASSEMBLY
SWITCH ASSEMBLY
