Instructions For Mounting The Wheel Angle Sensor On - Terre-net

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Instructions for Mounting the Wheel Angle Sensor on John Deere 8020 ILS Series Tractors These instructions are for mounting the wheel angle sensor installation kit (PN#200-0061-01) on all John Deere JD8020 series tractors having ILS front suspension. The kit was designed to work with the new (black) adjustable wheel angle sensor on ILS tractors having any tread width adjustment. 1. Pre-assemble the two mounting brackets as shown in the assembly drawing using the bolts provided in the kit. 2. Remove the two large bolts on the tractor’s left side tie rod and mount the tie rod bracket as shown in photo below. Use the two longer bolts (M12x1.5x60) and washers provided with the kit if necessary. Note: The tie rod bracket must have 1/8”x3” cut off one edge next to the bolt holes in the position shown in order to correctly fit the tie rod. 3. Install the Wheel Angle Sensor bracket under the “A” arm” on the large bolt on the drive shaft housing. Refer to the photo below for the correct mounting position and bolt. Mount the wheel angle sensor on the bracket in the position shown in photo. 4. Adjust the two linkage lengths to the values in the table below. Measure the distance between the centers of the ball joints on the threaded rod and between the ball joint and the sensor shaft centerline on the pot sensor linkage. These linkage lengths were designed for an ILS tractor having maximum tread width and maximum steering angle and should work well on any tractor. Linkage Pot Sensor Linkage (short arm) Threaded Rod (long linkage) Length 5.88 inches (5-7/8”) 11.0 inches 5. Install the linkage assembly on the wheel angle sensor and on the tie rod bracket as shown in photos. The pot sensor shaft should be turned to the working position shown in the photo. You can make a preliminary adjustment of the “pot sensor” angle so that you get a “count” of around 2000 with the front wheels pointing straight ahead. Note: You must avoid rotating the pot sensor shaft beyond its working range. Check the correct free rotation of the sensor arm using your hand before bolting the linkage arm to the tie rod bracket. 6. After installing all linkages, turn the front wheels full left and full right while checking if the linkage rods move freely and do not hit the tractor frame or other parts of the tractor. 7. Connect the sensor to the “Cab Box” cable and measure the number of “counts” on the monitor between a hard right turn and a hard left turn. On narrow tread tractors you should get a count variation of about 2600 while on wide thread tractors (whose front wheels turn more) you can obtain about 3600 counts. (you should typically get 3150 counts on a 76” ILS tread tractor). If necessary, rotate and adjust the potentiometer (pot sensor) so that your “counts” are within the working range of 16 – 4080. 8. You can make minor adjustments to the threaded linkage lengths if necessary, always leaving at least 3/8” of thread inside the ball joint. Route the wheel angle sensor cable and secure with tie wraps to avoid damage. Tighten all nuts and bolts. 9. After installing the brackets and sensor, you must perform a complete steering calibration and field test the tractor’s automatic GPS steering response and line acquisition. The steering calibration must be performed with the ILS front suspension at its normal working height. AutoFarm 1350 Willow Road, Suite 202 Menlo Park CA, 94025 ARJ 03-25-2004