| Manufacturer | John Deere |
| Price | - |
| Model | 4066R |
| Equipment Type | Compact Utility Tractors |
| Factory |
KEY SPECS
| Engine power (gross) | 48.5kW / 65.9hp / PS at 2600rpm / SAE J1995 rated power |
| Power take-off (PTO) power | PRT - 40.4kW / 54.2hp / eHST - 38.7kW / 52hp / Per SAE J1995 |
| Steering hydraulics | 23.5L/min / 6.2gpm |
| Implement hydraulics | 42.3L/min / 11.2gpm |
| Hitch type | Category 1 |
| Lift capacity, 24-in. behind link arms | 1135kg / 2500lb |
| Standard transmission; forward/reverse | eHydro Transmission (eHST) |
| Cruise control | Standard |
| Approximate shipping weight (open-station; cab) | Open operator station (OOS) - 1710 kg/3770 lb/Cab - 2120 kg/4675 lb |
| Wheelbase | 185.5cm / 73in |
ENGINE
The John Deere 4066R features a Yanmar 4TNV86CHT-MJT engine, delivering 65.9 hp at 2600 rpm with a robust torque of 178 Nm, making it suitable for various agricultural tasks. Its high-pressure common rail direct injection system enhances fuel efficiency while meeting Final Tier 4 emissions standards, which is advantageous for reducing environmental impact. However, potential challenges include the complexity of turbocharged systems and the need for regular maintenance to ensure optimal performance in demanding conditions.
| Family | EYDXL2.09HDA/FYDXL2.09HDA/GYDXL2.09HDA |
| Manufacturer | Yanmar |
| Engine model | 4TNV86CHT-MJT |
| Engine power (gross) | 48.5kW / 65.9hp / PS at 2600rpm / SAE J1995 rated power |
| Power take-off (PTO) power | PRT - 40.4kW / 54.2hp / eHST - 38.7kW / 51.9hp / Per SAE J1995 |
| Rated engine speed | 2600 rpm |
| Type | Diesel |
| Injection pump type | High pressure common rail direct injection |
| Aspiration | Turbocharged and charge air cooled |
| Emissions compliance | Final Tier 4 |
| Cylinders/displacement | 4 / 2.091L / 4 / 127.6cu in. |
| Number of cylinders | Four |
| Cylinder liners | Cast-in-block |
| Bore and stroke | 86 x 90mm / 3.4 x 3.54 in |
| Compression ratio | 19.1:1 |
| Lubrication | Pressurized |
| Cooling system | Liquid |
| Air cleaner | Dual element with electronic restriction indicator |
| Engine torque at rated speed | 178Nm / 131.3lb-ft |
| Fuel tank capacity | Rollover protective structure (ROPS) - 56.9 L/15 U.S. gal./Cab - 52.2 L/13.8 U.S. gal. |
ELECTRICAL
| Battery size | 770 CCA |
| Alternator (12-V) | 75 amp |
| Starter size | 2kW / 2.68hp |
FUEL SYSTEM
| Type | High pressure common rail direct injection |
TRANSMISSION
The John Deere 4066R features a choice between the eHydro infinitely-variable transmission and the 12/12 PowrReverser transmission, offering flexibility for various applications; the eHydro excels in smooth operation for tasks requiring frequent speed adjustments, while the PRT is beneficial for applications needing positive gear shifting. With a robust final drive and multi-plate wet disc brakes, the tractor provides excellent traction and stopping power, making it suitable for heavier loads (up to 2400 kg at the rear). Its hydrostatic power steering enhances maneuverability, especially in tight spaces, though operators may need to acclimatize to the responsive nature of the steering system.
| Standard transmission; forward/reverse | eHydro transmission (eHST) |
| Optional transmission; forward/reverse | 12/12 PowrReverser transmission (PRT) |
| Left-hand reverser | PRT only |
| Transmission gear ranges | PRT - 12F/12R eHydro - Infinitely-variable 3 range |
| Final drive | Planetary |
| Brakes | Multi-plate wet disc |
| Steering | Hydrostatic power steering |
| Clutch, wet/dry | Wet |
| Clutch disk diameter wet clutch | 129mm / 5.08in |
| Axle capacity | Front 1600kg / 3528lb / Rear / 2400kg / 5292lb |
| Creeper | SpeedMatch standard |
| Cruise control | Standard |
| Differential lock | Yes |
HYDRAULICS
| Type | Open center |
| Pump rated output | Steering 23.5L min 6.2 gpm Implement 42.3 L min 11.2 gpm 65.8 L min 17.4 gpm |
| Pump type | Single gear |
| Draft control sensing | Position control |
| Remote control valves available | Up to six rear remotes |
3-POINT HITCH
| Type | Category 1 |
| Lift capacity, 24-in. behind link arms | 1135kg / 2500lb |
POWER TAKE-OFF (PTO)
| Standard | Independent 540 rpm at 2600 rpm |
| Optional | 540E rpm |
| Control | Independent |
| Clutch | Wet disc |
FLUID CAPACITIES
| Crankcase with filter | 5.3L / 1.4qt |
| Transmission and hydraulic system | 47.3L / 12.5gal |
FINAL DRIVE
| Type | Planetary |
| Differential lock | Yes |
OPERATOR STATION
| Rollover protective structure | Type / Foldable / Yes |
| Platform - flat/straddle | Flat |
| Gear shift location - console/floor | PRT - Left-hand side |
CAB
| Compliance | OSHA, SAE, ASAE |
| Visibility | 360 degree (angle) |
| Air conditioning, temperature differential | 14.4°C / 58°F |
| Doors | Two |
| Noise rating | 78 dBA |
| Seat equipment | Air suspension with swivel |
DIMENSIONS
| Wheelbase | 185.5cm / 73in |
| Front axle clearance | 35.1cm / 13.8in |
| Turning radius with brakes | 2.8m / 9.19ft |
| Turning radius without brakes | 3m / 9.84ft |
| Approximate shipping weight (open-station; cab) | Open operator station (OOS) - 1710 kg/3770 lb/Cab - 2120 kg/4675 lb |
TIRES
The John Deere 4066R features versatile tire options for various applications, including agricultural, turf, and industrial, allowing for adaptability in field conditions. Its front tread spacing of 148.1 cm and rear spacing of 137.2 cm provide stability and effective load distribution, enhancing performance in varied terrain. However, users should consider the implications for maneuverability and soil compaction depending on the tire selection and application scenario.
| Front | Farm - 8-16 / Turf - 27x10.5-15 or 27x12LL-15 / Industrial - 10-16.5 |
| Rear | Farm - 13.6-28 / Turf - 44x18-20 or 22.5LL-16.1/Industrial - 16.9Lx24 |
| Front tread range | 148.1cm / 58.3in |
| Rear tread spacing | 137.2cm / 54in |