John Deere 6620 Premium

The John Deere 6620 Premium is a tractor produced by John Deere. It is equipped with a 414.1 ci 6.8 L engine. The listed engine power is Diesel (net): 125 hp / 93.2 kW. Transmission: AutoQuad II. Operating weight: 11,532 lbs 5230 kg.

Engine Power

Diesel (net): 125 hp / 93.2 kW

Fuel & Capacities

54.7 gal 207.0 L

Transmission

AutoQuad II

Operating Weight

11,532 lbs 5230 kg

Overview

	2001 - 2006 Model year 2001-20032003-2006 6020 SeriesUtility tractor 6020 Series Utility tractor

Production
Manufacturer	John Deere
Utility tractor

John Deere 6620 Premium Engine
John Deere 6.8L 6-cyl diesel
Fuel tank	54.7 gal 207.0 L
Engine details ...

John Deere 6620 Premium Transmission
24-speed partial power shift
Transmission details ...

John Deere 6620 Premium Power
Engine (net)	125 hp 93.2 kW
PTO (claimed)	110 hp 82.0 kW

Mechanical
Four-wheel drive
Steering	hydrostatic power
Wet disc brakes
Cab standard.

Hydraulics
Type	closed center load sensing
Pressure	2900 psi 200.0 bar
Pump flow	25.4 gpm 96.1 lpm

Tractor hitch
Rear Type	II/IIIN
Rear lift	16,360 lbs 7420 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540/1000

Dimensions & Tires
Weight	11,532 lbs 5230 kg
Front tire	14.9R28
Rear tire	18.4R38
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	90
	115
Battery volts	12

References

6020 Series published in 2003, by John Deere

Engine

Engine Detail — 414.1 ci / 6.8 L Diesel

Manufacturer	John Deere 6068T
Configuration	turbocharged intercooled diesel, 6-cylinder, liquid-cooled
Displacement	414.1 ci 6.8 L
Bore/Stroke	4.19x5.00 inches 106 x 127 mm
Rated Power (net)	125 hp 93.2 kW
Rated RPM	2300
Idle RPM	850-2460
Operating RPM	1300-2300
Torque	392.0 lb-ft 531.6 Nm
Torque RPM	1500
Firing order	1-5-3-6-2-4
Starter	electric
Starter volts	12
Intake valve clearance	0.014 inches 0.356 mm
Exhaust valve clearance	0.018 inches 0.457 mm

Transmission

Transmission — PowrQuad Plus

Transmission	PowrQuad Plus
Type	partial power shift
Gears	24 forward and reverse

Transmission — AutoQuad II

Transmission	AutoQuad II
Type	partial power shift
Gears	24 forward and reverse

Dimensions

John Deere 6620 Premium Tires
Standard tires (ag)	Front: 14.9R28. Rear: 18.4R38

Dimensions

John Deere 6620 Premium Weight
	11,532 lbs 5230 kg
Max capacity	18,740 lbs 8500 kg
Max front axle	9,039 lbs 4100 kg
	9,921 lbs (braked axle) 4500 kg
Max rear axle	15,210 lbs 6899 kg

Recommended Implements & Sizing Guide

Engineering recommendations for John Deere 6620 Premium based on its 125 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm)	Heavy Duty	Heavy primary tillage; semi-mounted hitch recommended.
Rotary Cutter / MowerMowing & Clearing	10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼	Heavy Duty	Wide swath pasture and crop residue shredding.
Rotary TillerSeedbed Prep	90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机	Commercial / Field Scale	Deep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage	15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙	Commercial / Field Scale	Wide commercial field leveling; requires hydraulic remotes.
Hay BalerHay & Forage	5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机	Heavy Duty	High density baling; requires minimum 85 PTO HP.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere 6620 Premium.

Estimated Continuous Field Runtime: 8.4 hrs

Approximately 8.4 hours of continuous field operation at ~75% rated power on a full tank (54.7 gal / 207.1 L).

Estimated 75% Load Fuel Burn~6.5 gal/hr (24.6 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours