The tractor is available with a three-range electronic hydrostatic (eHydro) transmission.

Fluid under pressure transmits engine power to the drive wheels using a pump and motor
Functions both as a clutch and transmission
Provides high torque for startup
Reduces powertrain shock loads

Danfoss® supplies both the pump and motor. This ensures that the components are matched to each other, providing maximum efficiency.

The electronic hydrostatic transmission is ideally suited for jobs where productivity is a must, such as loader or mower applications.

Twin Touch™ foot controls allow the operator to select both directions of travel and speed with a touch of the toe.

Key features of the eHydro transmission:

Infinitely variable ground speeds, in each range, allow the operator to match the speed of the tractor to the job.
No clutching means fast and easy direction changes.
Twin Touch foot pedals provide quick and easy forward/reverse operation.
Cruise control is standard equipment:
- Cruise control switch is located on the right-hand console for easy access.
- Cruise control is electronically engaged and disengaged, which allows for precise setting of speed.

Danfoss eHydro transmission

Danfoss eHydro transmission is used for reliable operation. Durability features include:

Large forged trunnion shaft with larger support bearings that reduce vibration and noise
Center section made from ductile iron (much stronger than grey iron used in many competitive transmissions)
Transmission oil cooler cools transmission oil for longer transmission life

Safety features of the eHydro transmission include:

The tractor will start with one or both foot pedals depressed, but it will not move until both pedals first return to neutral.
Operator presence system means the tractor will come to a stop if the operator leaves the seat but will not shut off unless the power take-off (PTO) is also running.

Key John Deere advantage

Twin Touch foot controls

John Deere's Twin Touch foot controls offer key advantages over competitive hydro model tractors.

Some competitive hydrostatic tractors use a treadle pedal designed (toe-heel) foot control for operation of the hydro.
- Requires the operator to use both toe and heel to change direction, resulting in increased operator fatigue

Integrated eHydro features

The eHydro convenience controls have been integrated into a single module. Combining features such as SpeedMatch™ LoadMatch™, MotionMatch, eThrottle, and automotive-style cruise control pulls the maximum efficiency out of the eHydro transmission tractors. All these features are standard on the 4M Heavy Duty and 4R models and deliver customers an easier and more comfortable experience.

eHydro convenience control module

	Press button to active/deactivate eThrottle. When eThrottle is activated, depression of the travel pedal increases engine rpm and tractor speed.
	Press button to active/deactivate LoadMatch. When LoadMatch is activated, engine will not stall during heavy load applications.
	Press button to activate/deactivate SpeedMatch. When SpeedMatch is activated, operator is able to set the desired maximum travel speed.
	Press button to activate/deactivate cruise control. When cruise control is activated, operator is able to set cruise speed.
	Press button to set cruise speed, or to decrease cruise/set max speed.
	Press button to resume set cruise speed, or to increase cruise/set max speed.
	MotionMatch - longer accelerate and decelerate distances.
	MotionMatch - shorter accelerate and decelerate distances.

eThrottle

eThrottle indicator

Press a button to activate/deactivate eThrottle. When eThrottle is activated, depression of the travel pedal increases engine rpm and tractor speed simultaneously. This provides the operator with comfort and convenience as well as fuel economy.

MotionMatch indicator

This icon indicates shorter accelerate and decelerate distances.

Automotive-style cruise control

Cruise control indicator

An automotive-style cruise control is standard equipment on the 4M Heavy-Duty and 4R Series Tractors. Cruise control is electronically engaged and disengaged and is located on the right-hand operator console.

Maintains desired forward speed without pressure on the foot pedal
When activated, the operator is able to set cruise speed:
- Use the SET/- button to set cruise speed, or to decrease cruise/maximum speed
- Use the RES/+ button to set cruise speed, or to increase cruise/maximum speed
A speed sensor also allows the tractor to maintain preset speed driving up and down hills
To disengage the cruise control, either:
- Apply pressure to the brakes
- Disengage cruise control button
- Briefly depress the reverse travel pedal

LoadMatch power management system

LoadMatch indicator

LoadMatch is a standard feature on the 4M Heavy-Duty and 4R Series Tractors.

If torque requirements increase significantly, the transmission will reduce the tractor's drive speed to compensate for the increased load on the transmission, maximizing torque to drive wheels and minimizing stalls.

Controls automatically adjust LoadMatch compensation depending on the tractor’s application. PTO applications require less engine speed fluctuation, therefore adjusting the amount of droop depending on PTO speed. This adjustment increases efficiency and optimizes engine speed and torque output based on tractor application.

While typically left on, LoadMatch can be turned off with the right-hand console controls.

MotionMatch

MotionMatch, standard on the 4M Heavy-Duty and 4R Series Tractors, is located on the right-hand console. It offers seven settings for adjusting the rollout or decelerating when the pedal is released.

MotionMatch indicator

This icon indicates longer accelerate and decelerate distances.

SpeedMatch

SpeedMatch indicator

SpeedMatch, standard on the 4M Heavy-Duty and 4R Series Tractors, further enhances the eHydro cruise control functions by allowing the operator to preset maximum speed. Once this feature is engaged, the operator must stroke the travel pedal fully to meet the operator’s preset speed and press the Set button to lock the speed. From there, the operator can use the automotive-style cruise controls to adjust speed. This function will improve accuracy and safety, particularly at lower travel speed applications.

Rotary tilling or spraying applications are examples of where SpeedMatch can be applied. SpeedMatch will work in both the forward and reverse set speeds.

NOTE: Automotive-style cruise control and SpeedMatch can be used in conjunction with LoadMatch to maximize productivity.

Danfoss is a trademark of Danfoss A/S Corporation.

4066M Heavy Duty Compact Utility Tractor