| Manufacturer | John Deere |
| Price | 51,842(USD) |
| Model | 4066M Heavy Duty |
| Equipment Type | Compact Utility Tractors |
| Factory | Augusta, Georgia, USA |
KEY SPECS
| Engine power (gross) | 48.5 kW/65.9 hp/PS at 2600 rpm/SAE J1995 rated power |
| Power take-off (PTO) power | eHydro transmission: 38.7 kW/52 hp |
| Steering hydraulics | 23.5 L/min/6.2 gpm |
| Implement hydraulics | 42.3 L/min/11.2 gpm |
| Hitch type | Category 1/Category 2 |
| Lift capacity, 24-in. behind link arms | 1135 kg/2500 lb |
| Standard transmission; forward/reverse | eHydro transmission |
| Cruise control | Standard |
| Approximate shipping weight (open-station; cab) | Open station: 1950 kg/4290 lb/Cab: Not applicable |
| Wheelbase | 185.5 cm/73 in. |
ENGINE
The John Deere 4066M Heavy Duty tractor features a robust Yanmar® 4TNV86CT-MJT diesel engine with a rated power of 48.5 kW and a high-pressure common rail injection system, ensuring efficiency and compliance with Final Tier 4 emissions standards. Its turbocharged design and exceptional torque output of 178 Nm provide excellent performance for heavy-duty applications, making it suitable for demanding tasks like loader work and tillage. However, the reliance on liquid cooling and pressurized lubrication means increased maintenance requirements to uphold optimal operation.
| Family | EYDXL2.09HDA/FYDXL2.09HDA/GYDXL2.09HDA |
| Manufacturer | Yanmar® |
| Engine model | 4TNV86CT-MJT |
| Engine power (gross) | 48.5 kW/65.9 hp/PS at 2600 rpm/SAE J1995 rated power |
| Power take-off (PTO) power | eHydro transmission: 38.7 kW/52 hp/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 cylinders/2.091 L/127.6 cu in. |
| Number of cylinders | Four |
| Cylinder liners | Cast-in-block |
| Bore and stroke | 86 x 90 mm/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 | 178 Nm/131.3 lb-ft |
| Fuel tank capacity | 56.9 L/15 U.S. gal. |
ELECTRICAL
| Battery size | 770 CCA |
| Alternator (12-V) | 75 amp |
| Starter size | 2 kW/2.68 hp |
FUEL SYSTEM
| Type | High pressure common rail direct injection |
TRANSMISSION
The John Deere 4066M features an eHydro transmission with infinitely-variable three ranges, offering precise speed control for varying tasks, enhancing operator flexibility and ease of use in diverse conditions. Its robust planetary final drive and multi-plate wet disc brakes provide high durability and effective stopping power, ideal for heavy-duty applications. With a total axle capacity of 4,000 kg (8,818 lbs), this tractor is well-suited for demanding operations, though operators should be conscious of maintenance requirements for the wet clutch system.
| Standard transmission; forward/reverse | eHydro transmission |
| Transmission gear ranges | eHydro - Infinitely-variable three range |
| Final drive | Planetary |
| Brakes | Multi-plate wet disc |
| Steering | Hydrostatic power steering |
| Clutch, wet/dry | Wet |
| Clutch disk diameter wet clutch | 129 mm/5.08 in. |
| Axle capacity | Front/1600 kg/3528 lb/Rear/2400 kg/5292 lb/ |
| Creeper | SpeedMatch standard |
| Cruise control | Standard |
| Differential lock | Yes |
HYDRAULICS
| Type | Open center |
| Pump rated output | Steering/23.5 L/min/6.2 gpm/Implement/42.3 L/min/11.2 gpm/ |
| Pump type | Single gear |
| Draft control sensing | Position control |
| Remote control valves available | Two remotes standard |
3-POINT HITCH
| Type | Category 1/Category 2 |
| Lift capacity, 24-in. behind link arms | 1135 kg/2500 lb |
POWER TAKE-OFF (PTO)
| Standard | Independent 540 rpm at 2600 rpm |
| Optional | 540E rpm |
| Control | Independent |
| Clutch | Wet disc |
FLUID CAPACITIES
| Crankcase with filter | 5.3 L/1.4 qt |
| Transmission and hydraulic system | 47.3 L/12.5 gal. |
FINAL DRIVE
| Type | Planetary |
| Differential lock | Yes |
OPERATOR STATION
| Rollover protective structure | Type/Foldable/Yes |
| Platform - flat/straddle | Flat |
DIMENSIONS
| Wheelbase | 185.5 cm/73 in. |
| Front axle clearance | 35.1 cm/13.8 in. |
| Turning radius with brakes | 2.8 m/9.19 ft |
| Turning radius without brakes | 3 m/9.84 ft |
| Approximate shipping weight (open-station; cab) | Open station: 1950 kg/4290 lb/Cab: Not applicable |
TIRES
The John Deere 4066M features R4 industrial tires that provide excellent floatation and traction on varied surfaces, making it ideal for diverse applications such as construction and landscaping. A key advantage of the 31.5x13-16.5 front tire and 16.9-24/R4 Industrial 19.5L-24 rear tire combination is its stability during heavy loads, while the adjustable rear tread spacing allows customization for enhanced maneuverability. However, the relatively wide tread may present challenges in narrow spaces, necessitating careful planning in confined work environments.
| Front | R4 Industrial 31.5x13-16.5 |
| Rear | R4 Industrial 16.9-24/R4 Industrial 19.5L-24 |
| Front tread range | 1374.6 mm/54.1 in. |
| Rear tread spacing | 1375 mm/54.1 in./1495 mm/58.9 in. |