7230RTractor

With the current software generation all paddle pods, and the electrical joystick are reconfigurable giving operators free choice to customize all controls depending on applications, drivers, implements or other requirements.

The following information has to be considered for all reconfigurable controls (electrical joystick and selective control valve [SCV] paddle pods):

• Default function can be operated directly after turning on the tractor when controls are unlocked. No need to wait for the CommandCenter to load
• Activation of the reconfigured controls (custom mode) is required to load last used settings
• ISOBUS functionality has to be activated and acknowledged separately for safety reasons
• The button Save/Load is the short cut to the Settings Manager and gives the option to load stored settings

Electrical joystick control setup in the CommandCenter

Overview

 

To set up the electrical controls in the CommandCenter the operator has the possibility to select from different functions. The following functions can be reconfigured to the different controls:

• Buttons 5–9 are available for:
• Front loader auxiliary functions
• AutoTrac™ assisted steering system
• iTEC™ headland management sequences 1-4
• ISOBUS push button functions
• Gear shift
• Axes are available for:
• SCV control
• Front/rear hitch
• Front loader operation
• Rocker switch is available for:
• SCV control with extend/retract, float
• Front/rear hitch
• Front loader operation

Additionally, in the CommandCenter notification about the default settings there is an additional label on the right-hand side window to show the factory default settings for Settings Manager.

Control setup for ISOBUS functions on electrical joystick

For using ISOBUS push functions on the electrical joystick, the operator can select the buttons of the electrical joystick in the CommanCenter. There are two ways of setting up the ISOBUS functionalities:

1. In the electrical joystick setup
2. In the ISOBUS control setup

 

Code	Description
841L	Electrical joystick

 

NOTE: Please also see available attachments. 

Benefits

• Control of tractor and implement functions in parallel without hand movement
• Increased comfort reduces operator fatigue
• AutoTrac and iTEC resume buttons – ergonomic and comfortable activation without hand movement
• Maximum flexibility for various applications and operators

Functions overview

NOTE: If the multifunction lever is operated in tractor mode, variable functions can be assigned to the lever directions fore/aft and left/right and to the rocker switch on the multifunction lever. This assignment can be viewed only on the Controls Setup page (for more information see below).

A   Pull multifunction lever rearward until the functions of the implement are performed at the desired speed. Do not move the lever beyond the kiss pressure. B   Pull the multifunction lever back until it is beyond the point of perceptible kiss pressure (click point) and then release it. With SCV control: The hydraulic cylinder of the connected implement is extended in accordance with the preset flow time and flow rate. In loader mode: The preset flow time is ignored in loader mode. On loaders with return to position (RTP): RTP is activated. C   Move multifunction lever to the left until the functions of the implement are performed at the desired speed. Do not move the lever beyond the kiss pressure. D   Move the multifunction lever to the left until it is beyond the point of perceptible kiss pressure (click point) and then release it. With SCV control: The hydraulic cylinder of the connected implement is extended in accordance with the preset flow time and flow rate. In loader mode: The preset flow time is ignored in loader mode. In loader mode, if the multifunction lever is moved to the left twice in brief succession beyond the point of resistance (click position) and held there, the bucket shake function is activated. This function stops when the lever leaves its click position. On loaders with RTP: RTP is activated. The bucket shake function is activated in the same way as in loader mode. E   Push multifunction lever forward until the functions of the implement are performed at the desired speed. Do not move the lever beyond the kiss pressure.

F   Push the multifunction lever forward until it is beyond the point of perceptible kiss pressure (click point) and then release it. With SCV control: The hydraulic cylinder of the connected implement is retracted in accordance with the preset flow time and flow rate. In loader mode: The preset flow time is ignored in loader mode. On loaders with RTP: RTP is activated. G   Push the multifunction lever all the way forward and engage in detent to activate the float position. The lever remains in the detent until it is pulled back by hand. H   Move multifunction lever to the right until the functions of the implement are performed at the desired speed. Do not move the lever beyond the kiss pressure. I   Move the multifunction lever to the right until it is beyond the point of perceptible kiss pressure (click point) and then release it. With SCV control: The hydraulic cylinder of the connected implement is retracted in accordance with the preset flow time and flow rate. In loader mode: The preset flow time is ignored in loader mode. In loader mode, if the multi-function lever is moved to the right twice in brief succession beyond the point of resistance (click position) and held there, the bucket shake function is activated. This function stops when the lever leaves its click position. On loaders with RTP: RTP is activated. The bucket shake function is activated in the same way as in loader mode. J   Move the multifunction lever all the way to the right and engage it to activate the float position. The lever remains in the detent until it is pulled back by hand.

CommandARM – controls setup in the CommandCenter

Overview

The operator can choose from different functions for the CommandARM controls: 

• Buttons 1–4 are available for:
• iTEC sequences 1 – 4
• Paddle pods are available for:
• SCV control
• Front/rear hitch
• The default function for the SCV paddle pods are the SCVs as labeled
• The default function for buttons 1–4 are the iTEC sequences 1 – 4 (assignment in iTEC menu is still required)

Defaults function in the control setup

Overview

 

The operator also has the possibility to set all reconfigured controls (custom) for the paddle pods and the electrical joystick back to the factory settings (default) in the settings.

 

This can be done in the advanced settings.

The e23 transmission delivers smooth shifting and intuitive controls with Efficiency Manager™ in a reliable 23-speed PowerShift™ transmission. The e23 transmission is available for all 7R, 8R and 8RT Tractors.

 

The e23 has evolved from more than 50 years of John Deere PowerShift technology. With more automatic features, the e23 is easy to operate for all levels of operator experience. For more advanced operators looking to customize the transmission to best fit their operation, the e23 offers a custom mode.

As the next generation of PowerShift technology, e23 delivers the strength to handle sudden, high-torque power loads while maintaining responsive, quick, and smooth shifts. The e23 with Efficiency Manager provides improved fluid efficiency and overall productivity with limited input from the operator.

 

e23 options

• e23 transmission 40 km/h (25 mph) with Efficiency Manager
• e23 transmission 50 km/h (31 mph) with Efficiency Manager

Even gear spacing for optimal performance

The e23 has 23 forward gears and 11 reverse gears, which are all evenly spaced. Forward gears are spaced apart with a 15 percent speed differential between each gear, while reverse gears are spaced apart with a approximately 30 percent speed differential, providing operators smooth shifting between gears. Even spacing improves efficiency and allows for smooth, automated shifts when using Efficiency Manager. The e23 can reach maximum forward ground speed in gear F20. As a result, gears F21-F23 maintain maximum ground speed at reduced engine rpms to save fuel on 40-km/h (25-mph) transmission.

 

e23 controls

 

The e23 is available with either a right-hand or left-hand reverser.

Right-hand reverser

 

A convenient, right-hand reverser is available with the e23 transmission. The reverser is located on the CommandARM™ controls as shown above.

• Forward direction selector
• Reverse direction selector
• Neutral position
• Electronic park lock

 

Right-hand reverser equipped models use four main controls to operate the tractor:

• Foot brake
• Clutch pedal
• Set speed adjuster
• Gear selector control lever with integrated reverser

 

The right-hand reverser control strategy combines speed control and direction control into one multi-function lever that is conveniently located on the CommandARM. This is a good choice for most common field applications since tractor speed and direction are not constantly being adjusted by the operator.

 

 

Left-hand reverser

An easy-to-use left-hand reverser is available with the e23 transmission and includes the same functions as the right-hand reverser. The reverser control is located at the 10 o’clock position on the steering column for intuitive control.

The four-position, left-hand reverser column incorporates the following controls:

• Forward direction selector
• Reverse direction selector
• Neutral position
• Electronic park lock

Left-hand reverser equipped models use five main controls to operate the tractor:

• Foot brake
• Clutch pedal
• Set speed adjuster
• Gear selector control
• Multi-function left-hand reverser

The left-hand reverser control strategy separates the direction control lever from the speed/gear control lever on the CommandARM. This strategy is a good choice for operations requiring the right hand to run multiple operations on the CommandARM or applications requiring constant directional changes like loader work.

Determining which reverser is best suited for a specific operator depends on a few key factors. Consider the following to help choose between a left- or right-hand reverser.

• Operator preference and ergonomic benefits.
• Operators in loader applications might prefer a left-hand reverser since direction changes occur frequently while their hands are on the steering wheel (near the left-hand reverser location).

Producers primarily in row-crop applications using features like AutoTrac™ or operating with the seat swiveled to the right for easy access to monitors and displays might find the right-hand reverser more convenient. Speed and directional controls are in one location on the CommandARM.

 

CommandCenter™ controls

The CommandCenter is the central information system for tractors and allows the operator to program various settings tailored to a specific operation.
 
To access the tractor’s transmission settings, press the transmission shortcut button on the CommandCenter shortcut bar.

 

Operating modes

The e23 application settings employ three modes to take full advantage of the engine-transmission communication: full auto mode, custom mode, and manual mode.

Foot brake with integrated AutoClutch function

 

The electrohydraulically controlled brakes on e23-equipped tractors have an integrated AutoClutch function.

• At low idle only, the tractor will stop by depressing only one brake pedal.
• Pressing both brakes (locked together) simultaneously will stop the tractor from any ground or engine speed.

Braking can be done on flat ground or steep slopes simply by using the brake pedals; it is not necessary to depress the clutch.

• It is recommended to lock the brake pedals together when operating on roads.

AutoClutch sensitivity can be adjusted through the Generation 4 CommandCenter™. AutoClutch can be deactivated on e23 transmissions as well; however, it will be reactivated after every key start.

Stopping the tractor using AutoClutch

During transport, it may be desirable to use the AutoClutch feature to stop the tractor when approaching an intersection or turn. Braking the tractor using the AutoClutch at high ground speed and engine speed will require high brake-pedal force.

Rather than using AutoClutch alone, reduce the engine rpm and reduce the e23 to a slower commanded speed before applying the AutoClutch. This will help to reduce the force needed to stop the tractor with the AutoClutch. The tractor will accelerate to the previously commanded speed upon release of the AutoClutch, repositioning of the hand throttle and increasing the commanded speed.

NOTE: The preferred method of stopping heavy towed loads is to reduce the e23 commanded speed and lower engine rpm first, and then depress both brake pedals. (Brake pedals should be locked together.)

 

 

Using individual brake pedals - implement hook-up

 

Individual brake pedals can be used to assist slow-speed off-road turning, such as hooking up to an implement. At low idle, the AutoClutch feature will stop the tractor if the operator depresses only one brake pedal.

To assist in hooking up an implement, depress either brake pedal while slowly increasing engine speed until the desired turn is achieved. Returning engine speed to a low idle while continuing to depress one brake pedal will slow the tractor to a stop.

Full AUTO mode

Full AUTO mode enables the tractor to make adjustments to the transmission operating mode automatically, based on engine and transmission speed and the load on the tractor.  This means the tractor will shift up and throttle back automatically to reach the desired ground speed efficiently.  Operators have the ability to set the maximum forward and reverse speeds for the tractor in their particular application.

 

When shifting in AUTO mode, the transmission shifts set speeds, meaning the transmission may not necessarily shift gears each time the lever is bumped. Efficiency Manager is automatically engaged while operating in AUTO mode.  As a result, shifting will not take the tractor out of Efficiency Manager in AUTO mode.

Manual mode

Manual mode operates similar to a traditional PowerShift transmission. When shifting, the transmission shifts gears, not set speeds like AUTO and custom mode.  Manual mode also features Efficiency Manager when the operator engages set speed one or two on the CommandARM, as shown above in illustration.

When operating in manual mode with Efficiency Manager active, there is the option of turning eco on or eco off.  This allows the operator to select two different minimum engine speeds.  In the advanced settings page, operators can adjust AUTO shift engine speed droop and load anticipation, similar to custom mode.

Custom mode

Custom mode allows operators to adjust operating parameters to meet their specific operation.  Just like auto mode, custom mode shifts set speeds meaning the transmission may not necessarily shift gears each time the lever is bumped.  Efficiency Manager is engaged automatically in custom mode.

In custom mode, eco allows two minimum engine speeds to be set. Operators can turn eco on and off by either pushing the eco button on the side of the throttle or by selecting eco in the transmission settings page of the CommandCenter.  For example, operators may choose to turn eco on during transport to utilize a lower minimum engine speed and then turn eco off while operating in the field where a higher minimum engine speed is desired.

In the advanced settings page, operators can customize the auto shift engine speed droop as a percentage of the full engine speed.  In addition, the load anticipation feature can be enabled for the hitch engagement, hydraulic engagement, or both.

Releasing the park brake

 

The e23 transmission utilizes a spring-engaged/hydraulically-disengaged park brake. The park brake control feature prevents accidental park brake engagement when tractor is moving at high speed.

 

On tractors equipped with air brakes, the park brake automatically activates the air brake system.

Operators can lock-in a desired ground speed by pushing the button on the side of the hand throttle when the foot pedal is depressed to the desired ground speed. To unlock the foot pedal, the operator can tap the foot pedal, press the lock button or press the brake pedal.

 

 

 The cornerpost display shows the commanded gear instantaneously once selected.

Efficiency Manager

Efficiency Manager is automatically enabled in auto and custom mode. Efficiency Manager can be turned on in manual mode by selecting the set speed one or two on the CommandARM. The set speed adjuster on the top of the single-lever gear selector allows the operator to dial in the desired ground speed to establish set speed one or two in Efficiency Manager.

 
Efficiency Manager allows the transmission to up or down shift and change engine rpm to maintain the set wheel speed. To reach the desired set speed, the throttle must be set to full engine rpm. This allows Efficiency Manager to shift the transmission and adjust engine speed to maintain the desired wheel speed.  For more information on Efficiency Manager refer to the operator’s manual.

 

e23 operation

Both right-hand reverser and left-hand reverser control options provide full powershifts for on-the-go shifting; no need to stop or clutch when bump shifting or shuttle shifting between forward and reverse.

The single-lever shifter allows for quick and convenient shifting with minimal physical effort.
 
Shifts are made either by bumping the lever or by holding the lever in a forward or rearward position.

• Transmission is in neutral when the shift control or left-hand reverser is not in park, forward, or reverse.
• Operator presence feature prevents the transmission from going into gear when the operator is not seated or has the brake or clutch pedal depressed.
• Transmission can be programmed to start in 1F – 13F or 1R – 6R.

 

A forward gear between 1F and 13F may be preselected by depressing the clutch pedal and pushing or pulling the shift lever.  The transmission will then start in the preselected forward gear when clutch pedal is released.

Rapid shifting

When the tractor is working in a light-load condition, for example in transport, the transmission can be shifted rapidly by bumping the shift lever.

To reach transport speeds quickly:

• Depress clutch pedal and rapidly bump shift lever to 13F
• Transmission will shift directly to 13F when clutch pedal is released
• Transmission will skip some gears as it keeps up with the operator’s command, allowing the tractor to accelerate to transport speed quickly
• Once tractor is underway in 13F, bump the shift lever to reach desired ground speed 

Double shifting

The transmission can skip a gear when operating under load by double bumping the shift lever.

• This aids the ease of deceleration/acceleration when approaching and departing headland turns. 

Ground speed matching

When the tractor is slowing down and the clutch pedal is depressed, the transmission will match a gear to the ground speed of the tractor when the clutch is released. Ground speed matching only engages in gears 13F higher.

Setting start-up gears

The 7R Tractors default to 9F and 3R at start-up. However, these default start-up gears can be adjusted from 1-13F and 1-6R through the CommandCenter. Refer to the operator’s manual for additional information.

How exhaust gas recirculation (EGR) works

 

EGR reduces the high temperatures where nitrogen oxide (NOx) compounds are formed in the engine cylinders by replacing excess oxygen with a prescribed amount of cooled exhaust gas.

 

Exhaust gases contain more carbon dioxide than oxygen. The EGR valve in conjunction with the venturi and engine control unit (ECU) allows a controlled amount of exhaust gas to enter the intake manifold to mix with the incoming fresh air. Replacing excess oxygen with cooled exhaust gas leads to lower combustion temperatures, creating less NOx. In addition, EGR allows for advanced timing, leading to optimal performance of the engine, maximizing fuel economy.

 

The following diagrams illustrate how air flows through the engine.

 

For added performance and efficiency, the engine passes the exhaust gases through an EGR cooler before it enters the engine.

 

Flow of exhaust during engine operation

 

Exhaust airflow enters into the EGR cooler from the exhaust manifold near the turbocharger.

 

Based on engine load, air temperatures, and rpm, the engine control unit (ECU) opens or closes the EGR valve, allowing a measured percentage of exhaust gas to enter the intake manifold.

 

The gases mix with the rest of the incoming air from the turbocharger and aftercooler before entering the cylinders.

The Standard CommandView III cab offers unsurpassed visibility, operator comfort, control placement, and ride and sound quality.

Features:

• ComfortCommand™ seat with air suspension, lumbar support, swivel, fore-aft and lateral attenuation, backrest angle adjustment, adjustable left-hand armrest, and 40-degree right-hand seat swivel
• Operator presence system that warns if the operator is out of the seat while operating key functions
• Folding instructional seat
• CommandARM™ with integrated controls
• 4100 or 4600 Generation 4 CommandCenter™
• Behind-the-seat storage
• Left-hand storage compartment
• Passive noise reduction system
• Service ADVISOR™ data port
• Tilt/telescoping steering wheel with position memory
• Swing-out rear window, opens 30 degrees
• Right- and left-outside mirrors (manually adjustable mirror head)
• Monitor mounts on right-hand front post and rear cab post
• Standard radio package, including AM/FM stereo and weatherband with remote controls, auxiliary input jack, four speakers, and an external antenna
• Laminated glass
• Air conditioner and heater with automatic temperature controls (ATC)
• Two 12-V convenience outlet (cigarette lighter style)
• One 12-V 3-pin outlet with adapter (provides switched and unswitched power)
• One International Organization for Standardization (ISO) 9-pin connector
• Power strip with convenience plug adapter
• Hitch control lever lock and selective control lever lock
• Two-speed and intermittent front and rear wiper with washer
• Front pull-down sunshade
• Digital cornerpost display with:
  • Fuel level gauge, including low fuel warning
  • Temperature gauge
  • Diesel exhaust fluid (DEF) gauge, including low DEF warning
  • Engine rpm
  • Transmission commanded gear or speed
  • Vehicle system functions, such as iTEC™, that are operating
• Inside-mounted rearview mirror
• Beverage holders sized to accommodate various containers
• Interior left-hand dome light

ComfortCommand seat

ComfortCommand seat improves ride quality and helps to reduce operator fatigue

Features include:

• Armrests, lumbar support, and backrest angle are easily adjusted to match operator preference.
• Shock absorbers dampen the motion effect of the tractor for an improved ride.
• Seat height adjustments are conveniently located on the left armrest.
• Fore-aft adjustment is easy to reach located on the left front of the seat.
• Swivel adjustment, located on the front of the seat, allows the seat to be swiveled 40 degrees to the right or eight degrees to the left of the center position.
• Operator presence switch warns if the operator is out of the seat while operating key functions.
• Seat belt retractor.
• Centered cab seat, providing excellent over-shoulder visibility.
• Adjustable shock absorber permitting ride adjustment from soft to firm to match the operator's desired comfort level.
• Removable cushions for easy cleaning.

Tractor function controls

Located just to the right of the throttle is the Auto-Trac-activation button and four sequence controls for iTEC functions. Behind the iTEC sequence controls there are buttons which control the activation and deactivation of MFWD and differential lock. Differential lock can also be activated by the foot switch on the cab floor.

CommandARM

John Deere 7R and 8R Tractors feature the CommandARM with integrated Generation 4 CommandCenter display. The control layout of the CommandARM utilizes a clean and efficient design which groups controls by function and builds upon John Deere’s history of intuitive and ergonomic control placement and operation. The CommandARM’s design allows for a 40 degree right seat swivel and adjustable positioning matching the operator’s preference.

 

Controls located on the CommandARM include:

• Engine throttle
• FieldCruise™
• Minimum Engine speed – CommandQuad™, 16-speed PowerShift transmission (PST), e23™
• Eco mode – Infinitely Variable Transmission (IVT™)
• Foot pedal lock (if equipped)
• Transmission control
• Hitch/selective control valve (SCV) controls
• Rotary encoder hitch control
• Power take-off (PTO) controls
• Mechanical front-wheel drive (MFWD) on/automatic
• Differential lock on/automatic
• iTEC sequence switches
• AutoTrac™-assisted steering system resume switch (if equipped)
• Joystick (if equipped)
• Radio
• Beacon light on/off
• Hazard lights on/off
• Field Lights 1/2
• Heating, ventilation, air conditioning (HVAC) system

Transmission controls

John Deere 7R Tractors with CommandQuad transmissions feature a left-hand reverser. 8R Tractors equipped with 16-speed PST are equipped with right-hand reverser. 7R or 8R Tractors equipped with e23 PST offer a left- or right-hand reverser. 7R or 8R Tractors equipped with AutoPowr™/IVT are offered with either a left-hand or a right-hand reverser.

 

The transmission control lever is placed on the CommandARM’s left side closest to the operator for convenient setting and adjustment.

Hydraulic and hitch controls

Hydraulic and hitch controls utilize fingertip paddle pods for raise/lower and extend/retract functions. An optional crossgate joystick replaces fingertip paddle pods for control of SCVs and allows for programmable hydraulic functionality according to operator preference. Rear hitch position can also be controlled with the encoder wheel located on the right side of the CommandARM. The encoder wheel allows for finite positioning of the rear 3-point hitch.

Three buttons near the encoder are for hitch set, lock, and return to height. Adjustment knobs for the 3-point hitch are located under the cover for the CommandARM’s storage compartment and allow for adjustment of the rate of drop, hitch height limit, and depth control.

Throttle

The throttle design incorporates buttons which control FieldCruise speed, foot pedal mode (if equipped), and transmission eco settings. 

Controls for radio, lights, rotary beacon (if equipped), hazard flashers, and HVAC system are located to the center-right on the CommandARM, along with PTO for both front (if equipped) and rear PTO. 

Seat swivel

The design of the CommandARM allows for up to 40 degrees of right-hand seat swivel.

CommandCenter

The Generation 4 CommandCenters feature fast adjustment of tractor functions and controls and are integrated into the CommandARM to create a seamless control center. The 4100 CommandCenter features a 178-mm (7-in.) touchscreen display and is standard equipment on 7210R and 7230R models, while the 4600 CommandCenter features a 154-mm (10-in.) touchscreen and is standard equipment on 7250R – 7290R models, as well as all 8R and 8RT models.

 

The following functions can be adjusted using the CommandCenter display:

• Hydraulic settings
• Hitch settings
• Transmission settings
• FieldCruise
• iTEC programming functions
• Radio
• Lights

The brakes are designed with large-diameter rear disc brakes and powerful activating pistons. The brakes run in oil for cooling and long life in the most demanding situations. Braking in the field during a turn can be accomplished with light pedal effort and excellent modulation of brake forces.

There is a detection if brake pedal is locked together, if not maximum speed is limited to 40 km/h (24.9 mph).

Hydraulically actuated, power wet-disc brakes:

• Never require adjustment
• Are oil cooled for long life
• Tractors equipped with front brakes use annular pistons that automatically retract after each braking operation to reduce friction for better fuel economy
• Have a self-equalizing feature that ensures even braking to each wheel
• Have integrated backup braking capabilities built into the brake system to provide positive brake engagement should the engine or hydraulic system fail
• Use a brake valve that is located externally of the cab to provide a quiet operating environment

An integrated park brake is included with all transmission options.

Front wet-disk brakes are included on 8R Tractors equipped with the 50-km/h (31-mph) Independent-Link Suspension (ILS™) axle and 7R Tractors equipped with a 50-km/h (31-mph) Triple-Link Suspension (TLS™) Plus front axle. Front brakes are optional equipment on the 8R 42-km/h (26-mph) ILS axle and 40-km/h (25-mph) TLS Plus front axles.

Foot brakes on tractors equipped with AutoPowr™ transmission/Infinitely Variable Transmission (IVT™), and e23™ transmissions have an integrated automatic clutch function, as described in the IVT/e23 sections.

For towing very large loads, the 7R and 8R Tractors can be equipped with a complete dual-line air-brake-system or a hydraulic brake coupler, or both. The brakes supply air or oil pressure to a brake-equipped trailer or implement.

For minimizing the turning radius all 7R and 8R models are equipped with a steering brake. The brake pedal can be operated as two single pedals to help the operator in difficult situations.

To improve safety there is a warning signal for brake failures as base equipment for all 7R and 8R Tractor models. The system will indicate failure in the brake system on the tractor’s side-till coupler to the operator.

The steering system uses load sensing of hydraulic pressure required to efficiently complete the designated tasks. The pressure- and flow- compensating pump produces excellent stationary or creeping ground speed steering response to handle demanding applications.

ActiveCommand Steering (ACS™)

With ACS, John Deere has designed one of the most robust and full encompassing steering system in the industry. Whether in the field or on the road, ACS reduces steering effort, which can result in reduced operator fatigue and can improve operator comfort and control.
 
There are four key features of the ACS system:

Dynamic road wheel offset control

• A gyroscope senses tractor yaw and can automatically make small steering adjustments to provide unprecedented line-holding abilities. Drive down a bumpy road and experience how ACS makes it easier to keep the tractor straight, even over rough terrain.  ACS delivers the ultimate in comfort and control.
• ACS works to prevent over-steering when a sudden obstacle causes the operator to make a quick steering reaction.

Variable ratio steering

• Approximately 3.5 turns lock-to-lock at in-field speeds for quick headland turns.
• Approximately 5 turns lock-to-lock at transport speeds for improved vehicle control.

Elimination of steering slop and hand wheel drift

• Steering wheel drift and slop are eliminated with the ACS electronic control system.

Variable effort steering

• Steering wheel resistance automatically changes with ground speed to deliver light steering effort at slower speeds for less effort during headland turns, and higher steering wheel torque at transport speeds for better comfort and control.

A fail operational system

The ACS system is fail operational, which means steering is still functional in the event of any single-point failure. John Deere has gone to great lengths to help ensure the operator can steer the tractor if something goes wrong in the steering system.
 
For example, if the primary controller fails, a second controller takes over. If power from the alternator is lost, the battery resumes control. If the engine quits running and is unable to supply hydraulic oil to the system, an electric-driven backup pump is used to supply the oil. There is a backup for ACS components.

Value of ACS

• Improves line holding when driving at transport speeds
• Less turns lock-to-lock: 3.5 turns lock-to-lock in the field for quicker headland turns and 5 turns lock-to-lock at transport speeds for improved vehicle control
• Eliminates hand-wheel backlash and drift
• Reduces steering effort, resulting in reduced operator fatigue
• Smaller hand-wheel diameter for improved operator comfort and visibility
• Maintains operator feel and touch points of traditional steering column system
• Fully integrates with AutoTrac™ guidance system
• Compatible with suspended and non-suspended front axles
• Compatible with wide- and narrow-section width tires

The ACS system consists of several key components:

1. Gyroscope: This is used to measure the yaw rate (turn rate) of the tractor during transport speeds.
2. Road-wheel angle sensors: These sensors simply measure the steer angle of the tractor.
3. Power supply module: This module distributes the power of the battery and alternator throughout the ACS system.
4. Hand-wheel angle sensors and tactile feedback unit: This includes the steering wheel position sensors and a brake, which can increase or decrease resistance dependent on speed. Lighter feedback is desired during normal field use, and slightly heavier feedback is desired during transport and while the tractor is cornering at high speeds.
5. Controllers: Two controllers are located in the back of the tractor and are the brains of the system.
6. Control valves: Also known as steering valves, control valves are used to steer the tractor.
7. Electric-drive backup pump: This pump supplies oil to the steering system, brakes, and park brakes (for towing) if there is no longer a sufficient oil supply to the steering and brakes.

The 7R, 8R, and 8RT Tractors feature two lighting package options:

• Standard lighting 
• Premium lighting

Standard lighting: 1. Six front grill-mounted halogen lights 2. Twelve cab roof-mounted halogen lights 3. Two rear fender-mounted lights 4. Two rear turn signal and brake/tail lights 5. Two front corner lights and two belt-line lights 6. Left-hand rotary beacon light

Premium lighting: All halogen lights will be replaced by light-emitting diode (LED) lights (expect for two low-beam road lights)

Optional: 7. Two extremity lights* 8. Two loader/driving lights 9. Right-hand rotary beacon light

* Base for some markets according to the legal requirements.

 

The cab lighting pattern provides 330 degrees of coverage while the hood lighting provides the remaining 30 degrees, for completely-programmable, 360-degree, stadium-style lighting. This ensures there are no dead zones or lighting adjustments needed. The lighting configurations are available to match various applications and ensure maximum around-the-clock productivity.

Bulb housings are large, allowing for optimum total lumens and available light. The economy and standard lighting packages use 65-W halogen bulbs, whereas the premium lighting package uses light emitting diode (LED) lights. In the premium lighting package, these tractors take advantage of the high performing and efficient LED technology.

 

The LED lights provide 40 percent greater coverage width and 10 percent more light coverage in the rear. LED lighting packages use 45 percent less amps than standard halogen lights and have an increased life expectancy over high-intensity discharge (HID) lights which lead to lower costs of ownership throughout the life of the tractor.

 

CODE	Description
7204	Standard lighting
7207	Premium lighting
8726	Secondary rotary beacon light
8720	Loader and driving light package
873A	Lights, extremity – fender mounted, folding

 

The low- and high-beam driving/work lights are adjustable. Please refer to the operator’s manual section Electrical Services for complete details on adjusting lights.

Overview

Allows the operator to save and recall tractor and controls settings. It is possible to save and load all settings or only selected ones. Following settings can be saved: 

• Control assignments (electrical joystick, CommandARM™ controls)
• Selective control valve (SCV) settings
• Hitch settings (front and rear)
• Power take-off (PTO) settings (front and rear)
• Transmission settings
• Engine settings
• Lights settings

The following chart provides an overview:

Save settings Save current settings offers the possibility to		Load settings  Load settings allows the selection of function groups which should be loaded
1) Create new profile
2) Update last used profile with current values

In both strategies it is possible to choose for which function groups the settings should be saved.

A new profile and a name must be assigned.

Benefits

• Easy and clear structured menu
• Intuitive and easy setup of machine
• Save and recall of settings for different operators and implements
• Less time required to set up machine

The 7R Series Tractors offer two front hitch options to best fit a variety of applications.

Standard (non-ground-engaging) hitch option for applications including, but not limited to:

• Front-mounted mowers, toppers, and snow blowers
• Carrying front seed hoppers and plow packers
• Carrying front ballast
• Operating light-draft implements

Premium (ground-engaging) hitch option for applications including, but not limited to:

• Operating primary tillage equipment and standard blades 

Premium hitches include a push bar and heavier lift arms:

• Hitches with zero front auxiliary valves include one mid-mount valve.
• Hitches with one front auxiliary valve include two mid-mount valves.
• Hitches with two front auxiliary valves include three mid-mount valves.

To ensure adequate hydraulic availability, up to two selective control valves (SCVs) can be included with a front hitch.

Tractors equipped with a factory front hitch have the option of selecting a joystick control or paddle pot SCV controls. The joystick control is not compatible with the sixth rear electrohydraulic SCV because of the CommandARM™ controls space required for the front hitch joystick.

Features of John Deere factory-installed front hitches include:

 

	Standard	Premium
Lift capacity at ball ends (ISO)	5200 kg (11,464 lb)	5200 kg (11,464 lb)
Lift range	750 mm (29.5 in.)	750 mm (29.5 in.)
Overhang when folded	55 mm (2.2 in.)	55 mm (2.2 in.)
Approach angle (depending on tire and axle setup)	25.5 - 38.7 degrees	25.5 - 38.7 degrees
Reinforcing push bar	Field-installed option	Standard
Auxiliary valve with front couplers	Optional	Standard (optional second valve)
Category 3N hitch	Standard	Standard
7-pin connector - for implement lights	Standard	Standard
9-pin harness and connector (ISO)	Field-installed option	Field-installed option
Front-mounted remote switch	Standard	Standard
Hitch damping	Triple-Link Suspension (TLS™) axle, same effect	TLS axle, same effect
Hydraulic mode select	Single and dual	Single and dual
Electronic position control	Yes	Yes
Full ground clearance	Yes	Yes*
iTEC™ compatible	Yes	Yes
Power take-off (PTO) compatible	Yes	Yes
Installed weight (with push bar)**	--	455 kg (1003 lb)
Installed weight (no push bar)**	345 kg (760 lb)	--

 

*Hitches with a push bar maintain front axle to ground clearance for row-crop applications and can be used with ground-engaging implements, including primary tillage implements and standard blades.

 

**Equals weight of added hitch components.

 

The integrated and styled compact hitch design maintains full maneuverability even with the larger front tires. The hitch extends only 55-mm (2.2-in.) ahead of the front support when the arms are folded.

Standard (carrier version) hitches can be converted to a premium (ground-engaging) hitch by ordering and field installing a conversion kit that includes push bar and heavier lift arms.

All factory-installed front hitches are capable of single- and dual-acting hydraulic cylinder modes. This allows the operator the flexibility to choose the correct mode for a variety of front hitch applications. Single acting provides hydraulic force for retracting the front hitch cylinders and allows front implements to follow the contour of the ground or surface. For example, this would be the correct mode for a front-mounted snow blower. Dual acting provides hydraulic force in retracting and extending the front hitch cylinders to provide down force for ground-engaging implements.

 

Additional hitch features include:

• Integrated and protected routing of oil lines
• Category 3 top link with storage position
• Integrated towing clevis with pin
• Compatible with group 42 - 44 front tires

The 7R with front hitch comes equipped with position sensing that allows operators the ability to establish an upper height limit set point and lower limit set point through CommandCenter™ controls.  Position sensing maintains the height of the hitch arms based on the set points.
 
Position sensing provides the following benefits:

• Add to iTEC™ system sequence (raise/lower set points)
• Limit height for front-PTO implement (stay within desirable driveline angles)
• Set lower position for ground-engaging depth or blade position
• Maintain set height without added fixed link (position will auto correct)
• Prevent inadvertent hitch operation outside of desired range of motion (takes guesswork out of placing height of front implement)
• Less fatiguing for repetitive-type work where the same position is required over and over

For a 9-pin connector, order kit RE322555. The kit includes all necessary components and allows ISO implement communication.

 

NOTE: 7R Series Tractors with a factory-installed front hitch do not ship with a front weight support.

 

Front hitch – Field-installed options:

 

For more information on ordering a front hitch ready configuration, refer to Attachments, front hitch/power take-off (PTO) ready

For tractors ordered non-hitch or non-hitch ready please contact LaForge® company for front hitch options.

Laforge Systems Inc.
4425-C Treat Blvd. #230
Concord, California 94521
Phone: (925) 827-2010 or 1-800-422-5636
Web site: www.fronthitch.com 

LaForge is a trademark of Laforge Corporation.

Front hitch options:

• Standard front hitch with zero front couplers, 5200-kg (11,450-lb) maximum lift capacity at hitch balls
  • NOTE: 3150-kg (6944-lb) International Organization for Standardization (ISO) lift capacity.
    Less push bar (hitch raise/lower hard plumbed to mid-mount valve)
    Includes zero front auxiliary couplers.
    ISOBUS connector available through Parts.
• Standard front hitch with one front auxiliary coupler, 5200-kg (11,450-lb) maximum lift capacity at hitch balls
  • NOTE: 3150-kg (6944-lb-) ISO lift capacity.
    Less push bar (hitch raise/lower hard plumbed to mid-mount valve)
    Includes one front auxiliary couplers.
    ISOBUS connector available through Parts.
• Premium front hitch with one front auxiliary coupler, 5200-kg (11,450-lb) maximum lift capacity at hitch balls
  • NOTE: 3150-kg (6944-lb) ISO lift capacity.
    Includes push bar (hitch raise/lower hard plumbed to mid-mount valve)
    Includes one front auxiliary couplers.
    ISOBUS connector available through Parts.   
• Standard front hitch with two front auxiliary couplers, 5200-kg (11,450-lb) maximum lift capacity at hitch balls
  • NOTE: 3150-kg (6944-lb) ISO lift capacity.
    Less push bar (hitch raise/lower hard plumbed to mid-mount valve)
    Includes two front auxiliary couplers.
    ISOBUS connector available through Parts.
• Premium front hitch with two front auxiliary coupler, 5200-kg (11,450-lb) maximum lift capacity at hitch balls
  • NOTE: 3150-kg (6944-lb) ISO lift capacity.
    Includes push bar (hitch raise/lower hard plumbed to mid-mount valve).
    Includes two front auxiliary couplers.
    ISOBUS connector available through Parts.
• CommandARM paddle pot SCV controls
  • NOTE: Not compatible with joystick control.
    Provides proportional paddle pot SCV control for mid-mount valve(s).
• Joystick control
  • NOTE: Does not include mid-mount valve or loader-ready components.
    Not compatible with six rear SCVs.
    Not compatible with CommandARM SCV controls.