9510RTractors

What is it?

Efficiency Manager (EM) allows for IVT-like operation on the 18-speed PowerShift transmission. With EM engaged, the operator no longer has to manage the engine revolutions per minutes (rpm) and gear selection for the most efficient level of operation possible. Efficiency Manager does that automatically by shifting up and throttling back depending on the load on the tractor.

 

How does it work?

With the tractor sitting still, in neutral, or once the tractor is in motion, the operator simply pushes either the F1 or F2 switch on the CommandARM™ to activate the feature. Once EM is activated, the operator can set and adjust the desired ground speed by using the thumbwheel on the shift lever. An icon and the desired ground speed will appear on the corner post display once EM is activated.

 

The operator can program two ground speeds by pushing either the F1 or F2 switch. The F1 setting will typically be set for field work while the F2 setting will be used for field/road transport. F1 can be set at any speed from 2 mph (3.2 km/h) to 12.6 (20.3 km/h) mph, and F2 can be set at any speed from 2 mph (3.2 km/h) to 25 mph (40 km/h).

 

Can it be managed by the operator?

By navigating through the CommandCenter™, the operator can adjust the rpm shift points while operating in custom mode. The operator can set it to automatic or custom. In automatic mode, the tractor will predict the optimum shift points under load to maintain the highest level of performance and operation. Custom mode allows the operator to adjust how high or low he/she would like the engine rpm to pull down before shifting under load. See the operator’s manual for more information.

 

Operation example:

If a customer is operating a 9R, equipped with the 18-speed PowerShift transmission, on a grain cart he/she could set F1 to the same speed as the combine for an unload, on the go scenario. Once the combine is empty and the 9R operator is ready to unload the grain from the cart onto the truck, he/she could push the F2 switch (already set at a higher transport speed) to get them to the truck quicker.

 

NOTE: Efficiency Manager is not recommended during for use during high draft load applications. We do not recommend the use of Efficiency Manager during the cut cycle in scraper applications. Efficiency Manager is recommended during the transport cycle of scraper applications.

JDLink, Service ADVISOR, and Service ADVISOR Remote

The optional GreenStar™ JDLink System from Ag Management Solutions (AMS), including Select and Ultimate versions, allows operators to optimize the true performance capabilities of their 7R, 8R/8RT, and 9R/9RT Series Tractors. Optimization occurs by continuously collecting and transmitting machine data for machine management purposes via mobile phone technology. In collecting operational information, the system enables the preventive maintenance and remote diagnostics of tractors, as well as the tracking of machines working on multiple work sites.
 
Information collected by JDLink includes location, machine hours, oil temperature, idle time, maintenance intervals, and a variety of other machine settings. The data collected by JDLink is communicated to a central John Deere server and made available to registered users via a password-secured JDLink Website or through e-mail, fax, or SMS messaging. Machine owners can then access valuable equipment information quickly and efficiently to optimize machine operations before problems are realized by the current operator. There is a current JDLink Ultimate promotion featuring a one-year free subscription with the purchase of a 7R, 8R/8RT, or 9R/9RT Series Tractor.

For further information on the JDLink system and the appropriate tractor bundles required for a fully-functional JDLink system, please refer to the AMS product information.
 

NOTE: JDLink is not available in all geographic regions.

Service ADVISOR

Service ADVISOR diagnostics greatly assist in reducing service costs and downtime.  It allows the John Deere service technician to readily extract vital information about tractor malfunctions through the Service ADVISOR data port. Diagnostic codes and CAN bus statistics stored by the tractor and visible in the CommandCenter™ are used by service technicians to isolate, identify, and resolve problems.
 
Diagnostics and CAN bus statistics are not normally used by the operator. Access and use of trouble codes should only be done by a qualified, factory-trained John Deere service technician.

Service ADVISOR Remote

Service ADVISOR Remote takes the machine connectivity of JDLink and takes it one step further. With Service ADVISOR Remote, machines can be diagnosed remotely, saving the cost of a field service call. For example, diagnostic trouble codes can be reset and software updates can be uploaded remotely.

Ordering options

All 7, 8, and 9 Family Tractors come JDLink capable with all of the components necessary to use JDLink and Service ADVISOR Remote included in the base price. With the JDLink Ultimate promotion, receive a one-year free subscription in base price. Below are all of the ordering options.

 

JDLink options

JDLink Select NOTE: Includes JDLink hardware: integrated cab wiring harness, antenna, modular telematics gateway (MTG) with Service ADVISOR Remote capability, and JDLink Select activation. Requires purchase of JDLink Select subscription sold separately.

JDLink Ultimate NOTE: Includes JDLink hardware: integrated cab wiring harness, antenna, modular telematics gateway (MTG) with Service ADVISOR Remote capability, and JDLink Ultimate activation. Requires purchase of JDLink Ultimate subscription sold separately. In addition to JDLink Select features this includes: machine utilization information, machine reports, and machine diagnostics.

JDLink Ultimate promotion - One-year subscription included NOTE: Includes JDLink hardware: integrated cab wiring harness, antenna, modular telematics gateway (MTG) with Service ADVISOR Remote capability, JDLink Ultimate activation, and one-year subscription to JDLink Ulitimate service. In addition to JDLink Select features this includes: machine utilization information, machine reports, machine diagnostics.

JDLink Ultimate promotion - 3 year subscription included NOTE: Includes JDLink hardware: integrated cab wiring harness, antenna, modular telematics gateway (MTG) with Service ADVISOR Remote capability, and JDLink Ultimate activation, and three-year subscription to JDLink Ultimate service. In addition to JDLink Select features: machine utilization information, machine reports, machine diagnostics.

The CommandView™ II cab includes the following features:

• ComfortCommand™ seat with air suspension, lumbar control, swivel, fore-aft and lateral attenuation, backrest angle adjustment, and adjustable left-hand armrest
• Operator presence system warns if operator is out of seat while operating key functions
• CommandARM™ with integrated controls
• CommandCenter™ display for monitoring and adjusting tractor settings as well as AutoTrac™ and John Deere Section Control capabilities when ordered with touch screen.
• 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
• Monitor mounts on right-hand front post and rear cab post
• Radio ready wiring, mounting bracket, and external roof mounted antenna (external antenna is not included with radio ready option)
• Tinted glass
• Air conditioner and heater
• Two - 12-V convenience outlet (cigarette lighter style)
• Two - 12-V 3-pin outlet with adapter (provides switched and unswitched power)
• One – ISO 9-pin connector
• Transport lock for hitch and selective control valves
• Two-speed and intermittent front wiper with washer
• Digital cornerpost display:
  • Fuel level gauge with low fuel warning
  • Temperature gauge
  • Oil pressure gauge
  • Engine rpm
  • Transmission commanded gear or speed
• Inside-mounted rearview mirror
• Four - beverage holders sized to accommodate various containers
• Interior lighting: left-hand dome light, right-hand adjustable map light, and right-hand courtesy light
• Redesigned upholstery is lighter in color and provides a more pleasant and eye-appealing appearance

ComfortCommand™ seat

The ComfortCommand seat is built using cut-and-sew cushion construction, adjustable backrest angle, and lumbar support controls for maximum operator comfort.  The cut-and-sew design allows material to move independently of the foam, providing additional comfort.  The seat is covered in a soft but durable fabric that breathes, and the cushions are removable for easy cleaning.  An optional leather seat covering is also available.
 
ComfortCommand seat features include:

• Armrests, lumbar support, and backrest angle are easily adjusted to match operator preference
• Shock absorbers dampen motion effect of the tractor for an improved ride
• Seat height adjustments are conveniently located on the left armrest
• Fore-and-aft adjustment is easy to reach located on left front of seat
• Swivel adjustment, located on the front of the seat, allows seat to be swiveled 25 degrees right or 15 degrees left of center position
• Operator presence switch - warns if operator is out of seat while operating key functions.
• Seat belt with retractor
• Seat is centered in cab, providing excellent over-shoulder visibility 

 

Adjustable shock absorber permits adjusting the ride from soft to firm to match the operator's desired comfort level

Cab entry/exit

The 9R and 9RT Series Tractors utilize a CommandARM with an integrated CommandCenter display. Many of the features and controls that were on the right-hand console have been integrated into the CommandARM.  The controls and CommandCenter follow the operator as the seat swivels for added comfort.
 
The following functions are located on the CommandARM:

• Hydraulic settings
• Hitch settings
• Transmission settings for PowerShift (PST) or manual shift transmission (MST)
• FieldCruise™
• iTEC™ programming functions
• Radio
• Heating, ventilation, and air-conditioning (HVAC) controls (deluxe and premium cabs only)
• Lights
• In addition, A through J soft keys, a thumbwheel, and other CommandCenter navigation keys are integrated into the CommandARM. 

 

Other CommandARM functions provide individual access to all primary use controls:

• Engine throttle
• Hitch/SCV controls
• PTO controls
• Automatic PowerShift resume
• iTEC sequence switches
• AutoTrac™ assisted steering system resume switch (if equipped).  

 

The CommandARM can also be repositioned for additional comfort and to accommodate different operators.

CommandARM™ controls

The 9R and 9RT Series Tractors utilize a CommandARM with an integrated CommandCenter display. Many of the features and controls that were on the right-hand console have been integrated into the CommandARM.  The controls and CommandCenter follow the operator as the seat swivels for added comfort.
 
The following functions are located on the CommandARM:

• Hydraulic settings
• Hitch settings
• Transmission settings for PowerShift (PST) or manual shift transmission (MST)
• FieldCruise™
• iTEC™ programming functions
• Radio
• Heating, ventilation, and air-conditioning (HVAC) controls (deluxe and premium cabs only)
• Lights
• In addition, A through J soft keys, a thumbwheel, and other CommandCenter navigation keys are integrated into the CommandARM. 

 

Other CommandARM functions provide individual access to all primary use controls:

• Engine throttle
• Hitch/SCV controls
• PTO controls
• Automatic PowerShift resume
• iTEC sequence switches
• AutoTrac™ assisted steering system resume switch (if equipped).  

 

The CommandARM can also be repositioned for additional comfort and to accommodate different operators.

Operator visibility
 
The cab’s four cornerpost support structure provides a wide opening for front window glass, creating excellent forward visibility from the seat.
 
High visibility is accomplished by:

• Front window glass is as wide at the bottom as it is at the top.
• The front sunshade is integrated into the headliner and recessed.
• There are no view-obstructing components attached to the chassis. 

Rear visibility

The large rear window provides excellent visibility to the drawbar, 3-point hitch area, and rear-mounted implements. The cab supporting structure provides wide openings for rear window glass, creating excellent visibility paths from the seat. Selective control valves (SCVs) with hose couplers, are unitized for compact size and are stacked horizontally. This provides a clear visibility path to the drawbar.

3-point hitch

The 9R and 9RT Series Tractors are designed to maximize performance for different applications.  The 9R Series offers two different hitch options:

• Optional 6940 kg (15,300 lb)
  • Refer to the operators manual for compatibility
• Optional 9071 kg (20,000 lb)
  • Refer to the operators manual for compatibility

CommandARM™

 

To help boost productivity, there are five shortcut keys located on the 9R and 9RT Series Tractor CommmandARM™ to access individual hitch settings:

1. Hitch transport lock
2. Hitch lower limit set
3. Load/depth
4. Hitch upper height limit set
5. Hitch rate of drop

The load/depth feature is a useful tool designed to increase performance in tillage applications.  Load/depth adjustments allow the operator to make adjustments to hitch draft responsiveness.
 
Draft control helps maintain the operating depth in varying conditions such as rolling terrain and varying soil densities.

 

An additional feature with load/depth control is the hitch slip option.  Hitch slip uses wheel slip data to supplement the draft control system.  If the wheels slip, the 3-point hitch lifts to allow the tractor wheels to maintain traction with the ground.  Once the slip condition is no longer present, the hitch lowers to the required depth as determined by the hitch command and load depth settings.

 

Both of these hitch command options are easily programmable in the CommandCenter display by pressing the load/depth shortcut key, followed by simply using the thumbwheel and confirm key to dial in the desired settings.

Hitch, external remote control switch

For added operator convenience, a 3-point hitch remote control switch is located on top of the left rear fender for 9R and 9RT Series Tractors.  The external remote switches enable the operator to raise and lower the 3-point hitch from behind the tractor while hooking to implements.

Fully-independent 1000-rpm PTO is available as a factory- or field-installed option.

• Available on all 9R and 9RT Series Ag Tractors regardless of transmission.
• Full-power capability for maximum utilization (9R Series Tractors derate to 319 PTO hp when tractor is stationary)
• 44.5-mm (1-3/4-in.) diameter shaft.

See specs for model rated PTO horsepower.

Electrohydraulic (EH) PTO control

The 9R Series Tractor utilizes an electrohydraulic (EH) PTO-engagement switch to activate the optional 1000-rpm PTO.

Regular service and maintenance are essential to the performance, productivity, and longevity of all farm machinery.
 
Maximum uptime is an important element of productivity.

• Service points are quick and simple to check.
• Greater accessibility improves serviceability.

All items in the daily service schedule can be performed without the use of tools:

• Engine oil, hydraulic oil, coolant level, and water separator can be conveniently accessed from ground level without having to open the hood
• Engine can be easily accessed by simply raising the one-piece hood for more periodic maintenance checks
• Single-point latch mechanism and self-contained leash ensure easy hood opening and closure.

NOTE:  Always refer to the operator’s manual for complete maintenance and service recommendations.

 

Typical maintenance and service information includes:

Refueling

The 9R 1325 L (350 U.S. gal.) fuel tank is easily filled from the right or left side of the tractor.

 and the 9RT 1287 L (340 U.S. gal.) is easily filled from the left side of the tractor.

NOTE:

• John Deere supports the usage of bio-diesel. Bio-diesel should meet ASTM D6751 (US) or EN 14214 (European) fuel quality standards.
• Tractors receive fuel containing a 2 percent bio-diesel blend at the factory
• Acceptable blend levels may vary by geographic region 
  

For more information about the use of bio-diesel in John Deere engines, refer to www.JohnDeere.com/biodiesel

Engine access

The one-piece tilt hood design provides side shields and guards for additional engine compartment protection.
 
Pull out the hood release (located on the front, left side) and tilt hood back to open.

Transmission, hydraulic, and axle oil level

A sight glass for the transmission, hydraulic, and axle oil level is located at the right side of the tractor indicating proper oil levels and an oil fill neck is located on the back left side of the transmission for the 9R Series Tractor. The oil fill is located on the top of the common reservoir on the right side of the 9RT Series Tractor and a fill tube is located at the rear of the tractor. This common oil location improves on the two separate locations of the 9030 Series Tractors.

• Provides increased filter capacity compared to 9030 Series
• Transmission, hydraulic, and axle oil should be changed every 1500 hours
• Filter should be changed every 1500 hours unless filter restriction code occurs

Primary air filter access

The primary engine air filter is accessible from ground level for replacement annually or as operating conditions require. The filter is aspirated and extends filter life in dusty conditions by aspirating over 95 percent of incoming dust. Aspirator suction is created by utilizing the air flow from the cooling fan.

Oil change intervals

The engine features a 500-hour change interval when using approved John Deere PLUS-50 II oil and John Deere oil filter.

• Previous initial oil and filter change at 100 hours in no longer required due to the factory oil fill of Break-In Plus.
• If using anything other than John Deere PLUS-50 II a 250-hour change interval is required.  CJ-4 must still be used.
• Only use ultra-low sulfur diesel fuel and CJ-4, ACEA E9 or ACEA E6 oil
• An oil change of 500 hours is possible when using fuel with less than 15 parts per million (ppm) of sulfur, along with John Deere PLUS-50 II oil.

Battery access

The 9R Battery box is located at the top of the platform and on the 9RT the top step of the platform conceals the tractor’s three 12-V batteries 2775 (3-925CCA).
 
Although the batteries are maintenance-free, conditions such as long periods of operation at high ambient temperatures and excessive engine cranking may require adding water.

Battery boost terminal

A battery boost terminal is located on the left-hand side of the engine for convenient and proper boost-assisted starting.

Cab air filters

The cab fresh air filter is conveniently located beneath the left side of the cab:

• External service means no mess in the cab from dusty filters
• Filter housing acts as a dust accumulator compartment
• Hand screw eliminates need for tools
• Replace cab fresh air filter every 1000 hours or sooner if plugged or damaged
  

Cab air recirculation filter

 

Cab air recirculation filter is located in the roof liner above the operator. 70 percent of the total air volume is recirculated with a blanket effect for enhanced operator comfort.

• Replace cab air recirculation filter every 1000 hours or sooner if plugged or damaged. 

Cab air filters are not designed to filter out harmful chemicals. Follow the instructions in the implement operator’s manual and those given by the chemical manufacturer when using agricultural chemicals.

Fuse and relay panel

The electrical fuse and relay panel is located behind the operator’s seat and just below the cab's rear window. Simply lift up on the operator manual cover for access.

• Contains easy-to-replace automotive blade-type fuses and relays for quick servicing.
• Spare fuses are provided for each amperage size used.

The diode module contains many of the diodes contained in the system:

• If a diode problem occurs, simply replace the diode module for easy service and increased uptime.
• Relays are also fully interchangeable for quick service.

Electrical system (smart load center)

 

The electrical system provides a full CAN-bus based system on the tractor for improved tractor implement integration and flexibility. Incorporated with the system is a smart load center which provides fewer fuses, fewer connectors, and simplified wiring for increased reliability.
 
The solid-state load center’s primary function is to control the majority of high-current loads, such as fender floodlights and the horn. This electronic circuitry will monitor loads and voltages to provide fast reaction time and the ability to alert the operator if a circuit overloads or if voltage is out of specification, for example open circuit (undercurrent) or short circuit (over-current).

Windshield washer

The windshield washer bottle (optional) is located next to the right side fuel fill of the tractor.

Maintenance-free U-joint

Maintenance-free U-joint bearings require no servicing to reduce maintenance time.

Toolbox

A toolbox is conveniently located next to the left side of the batteries on the 9RT. A convenient toolbox is optional on the left-hand side of the front frame for tool storage and comes standard on all 9R and 9RT Series Tractors.

Optional high-flow hydraulics are available on 9R and 9RT Series Tractors equipped with a PowerShift Transmission (PST) by ordering code 3270. The high-flow hydraulic system provides an additional 30 gpm (114 L/min) of flow for a total of 78 gpm (295 L/min). This system is ideal for hydraulic fan motor demands.
 
The 9R and 9RT Series Ag High-Flow Tractor has two parallel hydraulic systems. The benefit of this system is that functions can be split between the two systems. Functions that require high flow and low pressure can be combined on one system (for example, air seeder fans, and planter motors). Functions that require high pressure and low flow can be connected to the remaining system (for example, implement lift, fold, and constant down-pressure systems).
 
Following these guidelines allows the hydraulic system to run cooler as it prevents both hydraulic pumps from running at high pressure. In general, pumps forced to run at both high pressure and high flow generate much more heat than a pump running at a lower flow or lower pressure.
 
The system operates with two hydraulic pumps:

• Pump 1 - Provides hydraulic flow of up to 48 gpm (182 L/min) to SCVs 1, 2, and 3. These SCVs are useful for operating lift/lower and other cylinder type hydraulic needs.
• Pump 2 - Attaches in front of pump 1 and provides hydraulic flow of up to 30 gpm (114 L/min) to SCVs 4 and 5. These SCVs are useful for operating hydraulic motors to drive air/fan or vacuum systems on seeding/planting equipment.
• All SCV oil returns to one common hydraulic reservoir. 

 

This system is recommended for agricultural implements with continuous flow requirements. When maximum hydraulic pump capacity is reached, multiple functions will continue to operate at the same proportional flow rate.

John Deere has engineered the PowerTech PSX 13.5L (824 cu. in.) engine to meet the high expectations for fuel economy and performance that operators expect.

 

Series turbochargers

 

The PowerTech PSX 13.5L (824 cu. in.) utilize two turbochargers – a variable geometry turbocharger and a fixed geometry turbocharger, providing the torque rise and engine responsiveness to meet varying load conditions.

 

Fresh air is first drawn into the low-pressure fixed geometry turbocharger and compressed to a higher pressure. The compressed air is then drawn into the high-pressure Variable Geometry Turbocharger where the air is further compressed. The compressed air is then routed to the charge air cooler, and then to the intake manifold. By splitting the work between two turbochargers, both can operate at peak efficiency and at a slower rotating speed.

 

Variable Geometry Turbocharger (VGT)

 

The VGT is electronically controlled and hydraulically actuates the turbo vanes as required to maintain peak engine performance.

The turbocharger’s vanes are in the exhaust flow.  The opening or closing of the vanes changes the outlet volume and airflow speed against the turbocharger impeller.  When exhaust flow is low, the vanes are partially closed. This partial closure increases the pressure against the turbine blades to make the turbine spin faster and generate more boost pressure. The ability to keep the airflow flowing at optimum levels provides more consistent engine boost pressure and the ability to respond to load quickly across the entire engine rpm range.  This system is without turbo lag as can be found on some engines.  Boost pressure in the intake manifold is controlled at its optimum point for added fuel economy and performance regardless of rpm or load.

 

The overall benefits:

• Increased low rpm torque
• Quicker response to load
• Increased peak torque
• Improved fuel economy
• Improved performance at high altitudes

 

Air-to-air aftercooling

Air-to-air aftercooling lowers the intake manifold air temperature and provides more efficient cooling while reducing cylinder firing pressure and temperatures for greater engine reliability. Since low temperature air is denser, a higher volume of air flows into cylinders so the engine is capable of meeting the increasing horsepower demands.

Electronic unit fuel injection system

Electronic unit fuel injection system on the 13.5L (824 cu. in.) engine provides the following benefits:

• Variable timing control for improved emissions
• Better control at start of fuel injection for improved starting
• Elimination of nozzle service
• Camshaft-driven transfer pump draws fuel through the fuel filter
• The single fuel rail is a drilled passage in the head, eliminating the need for external lines for reduced service through the fuel filter

Engine control unit (ECU) - full authority electronic controls

This engine control unit uses signal inputs from sensors and pre-programmed performance modeling to control critical engine functions such as fuel quantity, injection timing, air-to-fuel ratio, multiple fuel injections, amount of cooled Exhaust Gas Recirculation (EGR), and a host of other control parameters to deliver peak fuel economy and engine performance.

 

Each injector is controlled individually by the ECU. The ECU turns the injector on and off during each firing cycle to control the fuel delivery into each cylinder.  The ECU can sense engine speed and load changes at a rate of 100 times per second and respond instantly to them. Load and speed sensing allows each cylinder’s fuel delivery rate to be adjusted independently at the individual injector.  With each injection cycle, the ECU can make the following adjustments on the go:

• Number of injections
• Fuel pressure in the common rail
• Start of injection
• Duration of injection

 

This management system is connected to the transmission allowing the engine and transmission to respond simultaneously.

 

Cold weather and high altitude compensation are also precisely controlled for quality starts regardless of weather and proper power levels at high elevations.

 

Noise reduction 

 

The injection system also contributes to the engine running at a decreased noise level by a process called pilot injection.  The precise fuel injection capabilities allow a small amount of fuel to be injected early in the combustion process.  This helps lessen the combustion knock that is commonly heard on many diesel engines.  While the combustion noise reduction is most obvious at lower engine speed, pilot injection continues to function at any engine speed.

Vari-Cool™ system

The Vari-Cool fan drive system precisely controls the speed of the fan in relation to the cooling requirements to maximize efficiency of the engine. The Vari-Cool system is efficient for two primary reasons:

• The belt drive used in the Vari-Cool system transfers almost 100 percent of the power from the engine to the fan.
• The variable fan speed sheave is electronically controlled only operating at the necessary speed to cool the engine and other auxiliary components.

 

Vari-Cool is integrated into the hood design

 

The Vari-Cool system is an integrated part of the hood design.  Intake and outflow of air from the coolers is diverted to key openings in the hood structure.  The design allows for airflow dispersion that lessens dust and crop kick-up by discharging the airflow away from the cab.

 

How Vari-Cool works

 

This electrohydraulic system uses variable speed drives.  Actual fan speed is determined by the ratio differences of the top fan drive sheave to the bottom sheave.

The electronic control unit monitors various sensor inputs from the tractor and automatically changes the sheave ratio to change the fan speed. Hydraulic oil pressure is directed to the pistons that push the top inner sheave out (A), to close the gap and create a larger working diameter.

 

The bottom sheave (B) responds by compressing the coil spring, widening the gap between the two sheave halves, and creating a smaller working diameter to increase the fan speed.

 

To slow the fan, the valve opens, allowing oil to leave the piston, widening the upper sheave halves.

 

Automatic shutdown function

 

This feature monitors engine coolant temperature, engine oil pressure, and transmission oil pressures while the transmission is in the park position, and the operator is out of the seat.  If any of the systems reach undesirable levels, the tractor will shut down, to help prevent further tractor damage.