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John Deere
4066M HEAVY DUTY
4 Series Compact Tractors

John Deere 4066M Heavy Duty

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Category 1 and 2 Implement Compatibility

The 4M Heavy-Duty Tractor’s 3-point hitch system offers high implement versatility with Category 1 and 2 compatibility, telescoping draft links, and a lift capacity of up to 3130 lb (1420 kg) at the lift link ends. Its position control lever, rate-of-drop valve, and adjustable stabilizers ensure precise, consistent implement depth and easy attachment without tools.

Side, close-up view of a 4M heavy duty tractor's 3-point rear hitch with grass background
Excellent visibility provided by standard lighting equipment

Standard lighting equipment includes wide-angle halogen headlights with premium automotive-style bezels, amber flashing warning lights, and fender-mounted working lights, all compliant with ASAE S279 standards. 

Studio front left view of the headlights and front protective bars of a 4052M Compact Utility Tractor
Maximize Productivity With an eHydro™ Transmission

The eHydro™ transmission offers seamless operation with an infinitely variable ground speed, no clutching for direction changes, and integrated Twin Touch™ foot controls for quick and easy forward/reverse movement. It maximizes tractor productivity, reduces powertrain shock loads, and enhances operator comfort by providing high torque for startup.

Maximize Productivity with an eHydro™ Transmission
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Specs & Compare
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John Deere
4066M HEAVY DUTY
Compact Tractor
John Deere
4052M HST/PRT (Model year 2024)
John Deere
4052M Heavy Duty (Model year 2024)
John Deere
4066M (Model year 2024) Gear 4WD / HST 4WD
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Machine Configuration

Wheel or Track ConfigurationWheel

Engine

Engine MakeJohn Deere PowerTech™ 4045 PWL
Emissions CertificationsFinal Tier 4
AspirationTurbochargedTurbochargedTurbochargedTurbocharged and charge air cooled
Cylinder LinersWet sleevedCast-in-blockCast-in-blockCast-in-block
Aftertreatment TypeERG/DOC/SCR
Rated Engine Speed2600 rpm2600 rpm2600 rpm2600 rpm
Rated Engine Power65 hp
(SAE J1995)
SAE J1995 rated power: 37.9 kW
50.8 hp
51.5 PS at 2600 rpm
37.9 kW
51.5 hp
PS at 2600 rpm
SAE J1995 rated power
SAE J1995 rated power: 48.5 kW
65 hp
65.9 PS at 2600 rpm
Rated Engine Power49 kWSAE J1995 rated power: 37.9 kW
50.8 hp
51.5 PS at 2600 rpm
37.9 kW
51.5 hp
PS at 2600 rpm
SAE J1995 rated power
SAE J1995 rated power: 48.5 kW
65 hp
65.9 PS at 2600 rpm
Rated Engine Power66 PSSAE J1995 rated power: 37.9 kW
50.8 hp
51.5 PS at 2600 rpm
37.9 kW
51.5 hp
PS at 2600 rpm
SAE J1995 rated power
SAE J1995 rated power: 48.5 kW
65 hp
65.9 PS at 2600 rpm
Maximum Engine Torque500 Nm / 369 lb-ft139 Nm
102.5 lb-ft
139 Nm
102.5 lb-ft
178 Nm
131.3 lb-ft

Transmission

Transmission TypePowrReverser™ 16F/16R; Optional: PowrQuad™ PLUS 16F/16R, Powr8™ 32F/16R
CreeperCab: Powr8™ 32F/16R with creeperSpeedMatch™ standardNo
ReverserYesPowrReverser transmission onlyPowrReverser transmission only
ClutchWetWetWetWet

Rear Power Take-Off (PTO)

PTO Category540/540E; Optional: 540/540E/1000
Engagement MethodElectrohydraulic

Rear Hitch

Rear Hitch Category (SAE Designation)Category 2; convertible to 1
Sensing TypeTop link
Draft Control SensingMechanical or ElectrohydraulicPosition controlPosition controlPosition control

Drawbar

Drawbar CategoryCategory 2
Maximum Vertical LoadRoad/field use (250-mm extended): 1450 kg / 3197 lb; Field use (350-mm extended): 1200 kg / 2646 lb; Field use (400-mm extended): 1200 kg / 2646 lb 500 kg
1103 lb

Hydraulics

Hydraulic System TypeStandard: Open center; Optional: Pressure-and-flow compensated (PFC) system
Pump Rated OutputStandard: 94 L/min / 24.7 gpm; Optional: 117 L/min / 31 gpmSteering
23.5 L/min
6.2 gpm
Implement
42.3 L/min
11.2 gpm

65.8 L/min
17.4 gpm
Steering
23.5 L/min
6.2 gpm
Implement
42.3 L/min
11.2 gpm
Steering
21.5 L/min
5.7 gpm
Implement
38.7 L/min
10.2 gpm

65.86617 L/min
17.4 gpm
Available Flow at a Single Rear SCV70 L/min / 18.4 gpm; Optional: 100 L/min / 26.4 gpm
SCV ControlMechanical

Front Axle

Front Axle TypeMechanical Front Wheel Drive (MFWD)

Rear Axle

Rear Axle TypeFlange
Rear Differential LockElectrohydraulic
Differential ControlsElectrohydraulic
Final DriveInboard planetaryPlanetaryPlanetaryPlanetary

Steering & Brakes

Primary BrakesHydraulic wet disc

Tires

Rear Tires Size19.5L–24 in. 10PR R4 Bias
Wheel Tread RangeFront: 1299–1997 mm / 51.1–78.6 in

Electrical System

Alternator Capacity90 amp
Working LightsStandard: Halogen; Optional: LED
Driving LightsStandard: Halogen; Optional: LED

Operator Station

ROPS TypeFoldable, two-post
Gearshift LocationFloor
Seat SuspensionLow Profile
Instructional SeatNot Available
Primary DisplayAutomotive style light-emitting LED instrument cluster
RadioOptional

Technology Integration

GuidanceOptional: AutoTrac™ with AutoTrac Basic
ConnectivityJDLink™ Modem
Remote DiagnosticsYes
ISOBUS ReadyOptional for cab models

Capacities

Fuel Tank Capacity29.6 (PowrReverser™) / 38.0 (PowrQuad™ PLUS/Powr8™) gal.56.9 L
15 U.S. gal.
56.9 L
15 U.S. gal.
56.9 L
15 U.S. gal.
Cab - 50 L
13.8 U.S. gal.
Fuel Tank Capacity112 (PowrReverser™) / 144 (PowrQuad™ PLUS/Powr8™) L56.9 L
15 U.S. gal.
56.9 L
15 U.S. gal.
56.9 L
15 U.S. gal.
Cab - 50 L
13.8 U.S. gal.

Additional Information

Country of ManufactureSaltillo, Mexico
Date Collected2023_01_06T00:00:00.0000000