JD 7820.book - Terre-net

AutoFarm GPS AutoSteer
Hardware Installation Guide
Supported Models: John Deere 7720, 7820, 7920 MFWD
PN: 602-0014-02-A
Special Requirements
Tools
This list consists of special tools that are not normally needed. A complete set of common installation tools is
assumed. If you find that you are using special tools, please notify Documentation@Novariant.com.
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Metric open wrenches
Metric socket wrenches up to 24mm
Soft brush
Clean rags
Oil collection pan (for collecting oil when hose connections are opened)
Tractor Requirements
The tractor must be equipped with “Power Beyond” ports before starting your AutoSteer installation. If the tractor does not have a factory installed “power beyond”, you must order and install the John Deere “power beyond”
accessory kit before starting the AutoSteer installation.
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@Novariant.com with:
• outdated pictures or instructions
• tips for other installers
• general comments or suggestions
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Table of Contents
Special Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Tractor Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Attention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Technician Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Install Roof Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Install the Mounting Rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Mount the Roof Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Install the User Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Assemble and Mount the User Terminal Bracket. . . . . . . . . . . . . . . . . . . . . . . . . . 5
Mount and Adjust the User Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Install the Wheel Angle Sensor (WAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Mount the Sensor bracket and the Tie Rod bracket.. . . . . . . . . . . . . . . . . . . . . . . 10
Mount the Sensor and Mount and Connect Linkage Arms . . . . . . . . . . . . . . . . . 11
Adjust the Sensor and Linkage Arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Assemble and Mount the Hydraulic Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Install the Hydraulic Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Install the Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Route the Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
AutoSteer Valve Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Connect the Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Attach the Pressure Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Install the SA Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Mount the SA Module Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Mount the SA Module to the Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Install the Main Cable Harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Attach the Main Cable Harness to the User Terminal. . . . . . . . . . . . . . . . . . . . . . 20
Attach the Cable to the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Attach the Main Cable Harness to the Roof Array . . . . . . . . . . . . . . . . . . . . . . . . 21
Install the SA Module Cable Harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Attach the Cable to the SA Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Connect the SA Module Harness to the Hydraulic Valve . . . . . . . . . . . . . . . . . . 24
Connect the SA Module Harness to the Wheel Angle Sensor . . . . . . . . . . . . . . . 25
Attach SA Module Cable Harness to Main Cable Harness . . . . . . . . . . . . . . . . . 25
Final Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
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1. Install Roof Module
1.1 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.
1.2 Install the Mounting Rail
Remove the cab roof bolts.
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Align the mounting rail to mounting holes and fasten the mounting rail to the roof. The lettered holes and
the dummy cable connector must be on the left side of the tractor.
left side of tractor
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1.3 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.
Make sure that the spring lock is in place.
locked position
3
Insert and close the locking pin through the holes in the roof module and the mounting rail. 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.
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2. Install the User Terminal
2.1 Assemble and Mount the User Terminal Bracket
Remove hole covers from the cab post.
threads for
mounting
bracket
Mount the bracket assembly.
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2.2 Mount and Adjust the User Terminal
Attach the adjustable arm to the user terminal.
mounting plate
Remove the travel stop on the bracket assembly.
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Install user terminal arm onto the cab bracket.
Replace the travel stop.
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Tighten the arm onto the bracket.
Remove adjustment bolt caps.
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Adjust user terminal arm tightness.
Replace adjustment bolt caps and adjust user terminal viewing angle. (Different vehicle shown below.)
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3. Install the Wheel Angle Sensor (WAS)
3.1 Mount the Sensor bracket and the Tie Rod bracket.
Remove the bolt as shown.
Mount the sensor bracket.
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Mount the linkage bracket.
3.2 Mount the Sensor and Mount and Connect Linkage Arms
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3.3 Adjust the Sensor and Linkage Arms
Adjust linkage arm length and/or linkage bracket position to obtain between 3200 and 3800 counts. Turn the
wheels all the way in both directions to make sure the linkage arms can move without interference. Note:
This step is done during the calibration and tuning steps.
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4. Assemble and Mount the Hydraulic Valve
4.1 Install the Hydraulic Valve
Remove panel cover at the front right side of the cab.
Fasten bracket into place.
Make sure none of the
bracket bolts are in contact with the fuel tank
after installation
We recommend drilling
a third hole through the
compartment floor for
added support at the spot
shown here
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Use the rectangular washer underneath the floor the back right bolt.
Mount the hydraulic valve.
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5. Install the Hydraulic Hoses
5.1 Route the Hydraulic Hoses
Route the return, pressure, and load sense hoses from the AutoSteer hydraulic valve, beneath the cab to the
power beyond unit on the back of the tractor.
Route “Steer Out” hoses from the AutoSteer valve to the vehicle’s steer cylinder.
Route the vehicle’s existing hoses from the vehicle’s steering unit to the AutoSteer valve “Steer In” ports.
Note: Secure the hoses with cable ties and be sure they are clear of moving parts and heat sources.
5.2 AutoSteer Valve Port Connections
Hydraulic Hose
Valve Port Label
Steer In (Right)
SR
Steer In (Left)
SL
Steer Out (Right)
Right
Steer Out (Left)
Left
Pressure
P
Return
T
Load Sense
LS
Pressure Transducer
Trans
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5.3 Connect the Hydraulic Hoses
Disconnect the hoses shown below. Reroute and connect them to the AutoSteer valve “Steer In” ports.
Connect the hoses from the AutoSteer valve “Steer Out” ports to the steer cylinder fittings shown below.
disconnect and reroute
these hoses to the “steer
in” ports on the AutoSteer
valve
connect to the AutoSteer
“steer out” hoses here
Connect hoses to power beyond unit.
load sense
pressure
return
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5.4 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.
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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.
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6. Install the SA Module
6.1 Mount the SA Module Bracket
Note: It is essential that the SA Module is NOT mounted so that the cable connection is on the top or on the
side with the cable going up.
6.2 Mount the SA Module to the Bracket
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7. Install the Main Cable Harness
7.1 Attach the Main Cable Harness to the User Terminal.
7.2 Attach the Cable to the Power Supply
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7.3 Attach the Main Cable Harness to the Roof Array
Route the cable out of the cab through an existing rubber plug under the left side of rear window.
Attach the cable to the roof array.
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Secure the cable to the roof using the eye clamp.
Route the cable down the left side of the cab and secure with cable ties.
cable ties
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8. Install the SA Module Cable Harness
8.1 Attach the Cable to the SA Module
Connect the cable to the SA Module.
bottom of SA module
cable connector
locking mechanism in
open position
Close the cable connector locking mechanism.
locked position
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Note: To disconnect the cable from the SA module, the connector must first be unlocked as shown.
pull upwards
pinch here
8.2 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
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8.3 Connect the SA Module Harness to the Wheel Angle Sensor
Route and secure the WAS cable from the SA Module to the WAS.
Attach the cable to the WAS.
8.4 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.
Attach the harnesses with two connectors.
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9. 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.
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