AutoFarm GPS AutoSteer Hardware Installation Guide Supported Models: John Deere 7220 John Deere 7320 John Deere 7420 John Deere 7520 PN: 602-0022-02
Special Requirements Tools This list consists of special tools that are needed. A complete set of common installation tools is assumed. If you find that you are using other special tools, please notify Documentation@gpsfarm.com. Metric open wrenches Metric socket wrenches up to 24mm Soft brush Clean rags Oil collection pan (for collecting oil when hose connections are opened) Attention Tighten all screws, bolts, nuts, hose connections and cable connections after the final assembly of the AutoFarm Steering System on the vehicle. Technician Feedback Please contact Novariant via email to Documentation@gpsfarm.com with: outdated pictures or instructions tips for other installers general comments or suggestions ii
Table of Contents Special Requirements.................................................... ii Tools............................................................ ii Attention......................................................... ii Technician Feedback............................................... ii Installation Overview................................................... 1 Kit Overview...................................................... 1 Installation Kit Components.......................................... 2 Install Roof Module..................................................... 3 Safety Notes...................................................... 3 Install the Base Plate................................................ 3 Mount the Roof Module............................................. 4 Install the Wheel Angle Sensor (WAS)...................................... 6 Wheel Angle Sensor Overview........................................ 6 Mount Linkage Arm and Sensor Brackets............................... 6 Mount Linkage Arm and Sensor Brackets............................... 7 Adjust the Sensor and Linkage Arms................................... 8 Mount the Sensor and Connect the Linkage Arms......................... 8 Install the User Terminal................................................. 9 Assemble and Mount the User Terminal Bracket.......................... 9 Mount and Adjust the User Terminal.................................. 10 Install the SA Module................................................... 15 Mount the SA Module Bracket....................................... 15 Mount the SA Module to the Bracket.................................. 15 Assemble and Mount the Hydraulic Valve.................................. 17 Install the Hydraulic Valve.......................................... 17 Install the Hydraulic Hoses.............................................. 18 Assemble the Hydraulic Hoses....................................... 18 Route the Hydraulic Hoses.......................................... 18 AutoFarm Steering Valve........................................... 19 AutoSteer High Flow Valve Port Connections........................... 19 Connect the Hydraulic Hoses to Power Beyond Ports..................... 20 Identify Power Beyond Ports........................................ 21 Power Beyond JD-6820 Europe...................................... 22 Attach the Pressure Transducer...................................... 23 Install the Main Cable Harness........................................... 25 Attach the Main Cable Harness to the User Terminal..................... 25 Attach the Cable to the Power Supply in the Cab......................... 25 Attach the Main Cable Harness to the Roof Module...................... 26 iii
Install the SA Module Cable Harness...................................... 29 Attach the Cable to the SA Module................................... 29 Connect the SA Module Harness to the Hydraulic Valve.................. 30 Connect the SA Module Harness to the Wheel Angle Sensor............... 31 Attach SA Module Cable Harness to Main Cable Harness................. 31 Final Checklist......................................................... 32 iv
1. Installation Overview 1.1 Kit Overview The John Deere 7520 Tractor Installation Kit contains the following components. (Component size is not shown to scale below.) 1
1.2 Installation Kit Components Item Component 1 Hose Kit 2 Valve Bracket 3 Hydraulic Valve 4 User Terminal Monitor Bracket 5 Wheel Angle Sensor (WAS) Assembly 6 Roof Module Bolts/Spacers 7 Mounting Hardware 8 SA Module Assembly 9 SA Module Bracket 10 Main Harness 11 SAM Harness 12 Roof Module Bracket 13 Installation Guide 2
2. Install Roof Module 2.1 Safety Notes The AutoFarm system must be powered OFF when installing or removing the roof module. The supplied locking pin or a padlock must be in place whenever the vehicle is in operation. The roof module must be removed when transporting the vehicle at speeds above 30 mph. Make sure that you are in a stable position on the tractor platform when removing the roof module, so that you do not fall or drop the roof module. 2.2 Install the Base Plate Remove the cab roof bolts. 3
Align the base plate to mounting holes and fasten the base plate to the roof. The lettered holes and the dummy cable connector must be on the left side of the tractor. left side of tractor 2.3 Mount the Roof Module Slide the roof module into locked position. The cable connection must be on the left side of the tractor, facing the rear. 4
Make sure that the spring lock is in place. locked position Insert and close the locking pin through the holes in the roof array and the base plate. Note that a padlock can replace the locking pin. locking pin Attach the radio modem antenna. Note: The antenna should be attached hand tight. Do not use any tools to tighten the antenna. Apply a small amount of silicone grease to the o-ring seal on the antenna before mounting on the roof module. 5
3. Install the Wheel Angle Sensor (WAS) 3.1 Wheel Angle Sensor Overview The Wheel Angle Sensor is shown in the diagram below. cable connector sensor linkage arm bracket sensor bracket linkage arms 3.2 Mount Linkage Arm and Sensor Brackets Mount the sensor bracket on the right side of the front axle as shown in the photo below. Use the existing bolt on differential housing to secure the bracket. sensor bracket sensor linkage arms linkage bracket 6
3.3 Mount Linkage Arm and Sensor Brackets Mount the sensor bracket as shown below. sensor bracket Mount the linkage arm bracket as shown below. linkage arm bracket) 7
3.4 Mount the Sensor and Connect the Linkage Arms The complete wheel angle sensor installation is shown below. sensor bracket sensor linkage arms linkage bracket 3.5 Adjust the Sensor and Linkage Arms Adjust linkage arm length and/or linkage bracket position to obtain between 3200 and 3800 counts. Turn the tractor all the way right and left to make sure the linkage arms can move without interference. Note: This step is done after final assembly during the calibration and tuning steps. 8
4. Install the User Terminal 4.1 Assemble and Mount the User Terminal Bracket Remove plastic hole covers from the cab post. mounting bracket position Mount the bracket assembly 9
4.2 Mount and Adjust the User Terminal Attach the mounting plate on the adjustable arm to the user terminal using four screws. mounting plate Remove the travel stop on the bracket assembly. 10
Slide the user terminal arm on to the bracket. Replace the travel stop. 11
Tighten the arm on to the bracket using an Allen key wrench supplied in the installation kit. Remove adjustment bolt caps. 12
Adjust user terminal arm tightness so the arms can be easily turned during normal tractor operation. Replace adjustment bolt caps and adjust user terminal viewing angle. Turn the lever to loosen before adjusting the angle. 13
Replace the plastic cover before final assembly. The complete User Terminal installation is shown in the figure below. 14
5. Install the SA Module 5.1 Mount the SA Module Bracket Mount the SA module bracket in a protected position on the tractor. SA module bracket 5.2 Mount the SA Module to the Bracket Mount the SA Module to the bracket. SA module 15
AutoFarm recommends mounting the SA module in the positions shown below. Do NOT mount the SA module in the positions shown in the figure below. 16
6. Assemble and Mount the Hydraulic Valve 6.1 Install the Hydraulic Valve The AutoFarm steering valve is mounted under the right side of the tractor cab in the position shown below using the existing tractor bolts. Remove the cab mount bolts and use them to mount the valve bracket. cab bolts hydraulic valve Mount the hydraulic valve on to the bracket using the three long bolts supplied. hydraulic valve hydraulic valve bracket 17
7. Install the Hydraulic Hoses 7.1 Assemble the Hydraulic Hoses Assemble hoses as shown (Hose length is not shown to scale below.) pressure line pressure port on power beyond return line return port on power beyond lines load sense adapters to connect the tractor steering hoses to AutoFarm valve steer out right load sense port on power beyond line to right steer cylinder steer out left line to left steer cylinder 1/4 NPT elbow for pressure transducer teflon tape for NPT threads 7.2 Route the Hydraulic Hoses Summary: Steer IN and OUT hoses are routed from the hydraulic valve, under the cab, to the vehicle s steering lines. Note: Secure the hoses with cable ties and be sure they are clear of moving parts and heat sources. 18
7.3 AutoFarm Steering Valve The valve is shown in the figure below. steer out left steer out right steer in left steer in right return load sense pressure 7.4 AutoSteer High Flow Valve Port Connections Hydraulic Hose Steer In (Right) Steer In (Left) Steer Out (Right) Steer Out (Left) Pressure Return Load Sense Pressure Transducer Valve Port Label SR SL R L P T LS Trans 19
7.5 Connect the Hydraulic Hoses to Power Beyond Ports The pressure, return and load sense hoses from the AutoFarm valve must be connected to the three power beyond ports located at the back of the tractor as shown below. The load sense port is usually a metric thread on the side of the triangular adapter plate on either the right or left side of tractor as shown below. Some tractors have Load Sense adapter plates on both sides. If both load sense adapter plates are installed on the tractor and already being used, you will have to install a shuttle valve to connect the AutoFarm load sense hose to one of the load sense ports already being used. Pressure and return ports for power beyond. Use metric thread hose adapters. The load sense port is usually located on this plate or on similar plate on the other side of the tractor 20
7.6 Identify Power Beyond Ports Tractors equipped with a power beyond kit typically have the two quick couplers shown below. To install the AutoFarm system on these tractors you can either replace the female quick couplers on tractor by the two metric adapters provided in your hose kit or you can purchase two male quick couplers from a John Deere dealer and install them on the ends of the AutoFarm pressure and return hoses. The AutoFarm load sense hose can either be connected directly to the adapter plate on the valve block as shown on right or you can install a male quick coupler on hose end if the tractor is already equipped with female quick coupler for load sense. The load sense adapter plate can be installed on either the right side or the left side of the tractor s valve stack. pressure and return hoses from AutoFarm valve Optional male quick couplers on hose ends for tactors having female quick couplers already installed load sense adapter plate for power beyond (this is a John Deere part) metric thread elbow adapter for load sense hose going to AutoFarm valve 21
7.7 Power Beyond JD-6820 Europe Some tractors have different port locations for the power beyond. The picture below is from a JD-6820 in Europe. Your hose kit includes both M12 and M14 threaded elbows for the load sense because the thread size can be different according to the tractor model and Power Beyond port location. power beyond block pressure and return ports load sense port 22
7.8 Attach the Pressure Transducer Attach the 90 degree fitting to the port marked trans on the AutoSteer valve. Note: Use teflon tape to ensure a good seal. Attach the pressure transducer to the 90 degree fitting. Note: Use teflon tape to ensure a good seal. 23
Attach the cable connector from the valve harness to the pressure transducer. pressure transducer cable connector make sure to line up the connectors correctly. do not force the connection. 24
6. Install the Main Cable Harness 6.1 Attach the Main Cable Harness to the User Terminal 6.2 Attach the Cable to the Power Supply in the Cab 17
On European versions of the John Deere 7520 tractors you may find a different style of power outlet in the cab as shown below. Purchase a power adapter to connect your AutoFarm to this type of outlet. 6.3 Attach the Main Cable Harness to the Roof Module Route the cable out of the cab through an existing rubber plug under the left side of rear window. 18
Attach the cable to the roof module as shown in the photo below. Secure the cable to the roof using the eye clamp. 19
Route the cable down the left side of the cab and secure with cable ties. cable tie 20
7. Install the SA Module Cable Harness 7.1 Attach the Cable to the SA Module Connect the cable to the SA Module. (Different vehicle shown below.) bottom of SA module cable connector locking mechanism in open position Close the cable connector locking mechanism. locked position 21
Note: To disconnect the cable from the SA module, the connector must first be unlocked as shown. pinch here pull upwards 7.2 Connect the SA Module Harness to the Hydraulic Valve Route and secure the steering cable from the SA Module to the hydraulic valve. two connectors 22
7.3 Connect the SA Module Harness to the Wheel Angle Sensor Route and secure the WAS cable from the SA Module beneath the cab to the WAS. The two connectors on the main must exit under that cab to connect to the SAM Module cable. Attach the cable to the WAS. 7.4 Attach SA Module Cable Harness to Main Cable Harness Route the SA Module cable into the cab through the rubber plug under the right side of rear window. 23
8. Final Checklist Check all hose connections. Check all cable connections. Power up the vehicle and check for hydraulic leaks. Check manual steering. Power up the AutoSteer system and begin the calibration and tuning process. 24