John Deere 7820 VS Challenger MT645B specs comparison

John Deere 7820

General Infos

Make	John Deere
Model	7820
Country	United states
Production	From 2004  Until 2007
Price	-
Tractor type	Row Crop tractor
Fuel	diesel
Service repair manual	John Deere 7820 Manual

Dimensions, sizes and tires

AG front tires	11.00-16
AG rear tires	18.4R4
Lawn front tires	-
Lawn rear tires	-
Indus front tires	-
Indus rear tires	-
Weight	16,002 lbs or 7258 kg
Length	212.2 inches [538 cm]
Width	96 inches [243 cm] (short axle)
Height	125.4 inches [318 cm]
Wheelbase	112.6 inches [286 cm]
Ground clearance	-
Turning radius	-
Rear tread size	-
Front tread size	-
Turning radius	-

Horsepower and engin specs

Engine capacity	496 ci or 8.1 L
Cylinders	6 cylinders
Engine power	-
Engine RPM	2100 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	-
Fuel tank size	103.5 gal or 391.7 L
Oil capacity	25.4 qts or 24.0 L
Oil change	-
Starter motor	-
Starter volts	12 V
Parts And Accessories	John Deere 7820 Parts

Electrical and battery specs

Batteries number	2
Batteries voltage	12 V
Battries Amps	-
Cold Amps	925
Ground force	negative
Charging system	alternator
Charging Volts	-
Charging Amps	150 amps

Clutch and gearbox specs

Trans system	AutoPowr IVT
Trans type	infinitely variable transmission
Trans gears	infinite forward and reverse
Clutch system	hydraulic wet discs

Cabine and mechanical specs

Wheel drive	4x2 2WD
Final drive	-
Steering	hydrostatic power
Braking system	hydraulic wet disc
Cabin type	Cab standard
Differentiel lock	-

Hydraulics specifications

System	closed-center pressure-flow compensated
Valves	7
Pump flow	32.2 gpm or 121.9 lpm
SVC flow	30 gpm or 113.6 lpm
Steering flow	-
Tank capacity	28.5 gal or 107.9 L
Hydraulic pressure	3046 psi or 210.0 bar
Max flow	-

Drawbar specifications

Drawbar type	-
Claimed power	-
Drawbar horsepower	143.52 hp or 107.0 kW
Fuel consumption	9.5 gal/hour or 36.0 l/hour
Pulling power	21,634 lbs or 9813 kg

Power take-off (PTO) specs

Claimed power	155 hp or 115.6 kW
Real power	170.96 hp or 127.5 kW
Engine @RPM	540@1950 (rpm)
PTO Clutch	hydraulic wet discs
Rear PTO	independent
Rear PTO RPM	540 (rpm)
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	9.6 gal/hour or 36.3 l/hour

3 point hitch specifiations

Hitch system	-
Rear hitch	3/3N
Rear hitch lift	10,050 lbs or 4558 kg
Front hitch	-
Front hitch lift	-

Challenger MT645B

General Infos

Make	Challenger
Model	MT645B
Country	United states
Production	From 2005  Until 2008
Price	-
Tractor type	Row Crop tractor
Fuel	diesel
Service repair manual	Challenger MT645B Manual

Dimensions, sizes and tires

AG front tires	380/85R34
AG rear tires	480/80R46
Lawn front tires	-
Lawn rear tires	-
Indus front tires	-
Indus rear tires	-
Weight	18,308 lbs or 8304 kg
Length	206 inches [523 cm]
Width	118 inches [299 cm]
Height	123.6 inches [313 cm]
Wheelbase	121.1 inches [307 cm]
Ground clearance	22.4 inches [56 cm]
Turning radius	-
Rear tread size	60 to 88 inches
Front tread size	-
Turning radius	-

Horsepower and engin specs

Engine capacity	449 ci or 7.4 L
Cylinders	6 cylinders 24 valves
Engine power	235 hp or 175.2 kW
Engine RPM	2200 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	-
Fuel tank size	159 gal or 601.8 L
Oil capacity	20 qts or 18.9 L
Oil change	-
Starter motor	-
Starter volts	12 V
Parts And Accessories	Challenger MT645B Parts

Electrical and battery specs

Batteries number	2
Batteries voltage	12 V
Battries Amps	-
Cold Amps	775
Ground force	negative
Charging system	alternator
Charging Volts	-
Charging Amps	150 amps

Clutch and gearbox specs

Trans system	TechStar
Trans type	continuously variable transmission (CVT)
Trans gears	infinite (2-range) forward and reverse
Clutch system	-

Cabine and mechanical specs

Wheel drive	4x4 MFWD 4WD
Final drive	inboard planetary
Steering	power
Braking system	hydraulic wet disc
Cabin type	Cab standard with heat and A/C
Differentiel lock	electrohydraulic front and rear

Hydraulics specifications

System	pressure flow compensated
Valves	4 to 6
Pump flow	-
SVC flow	-
Steering flow	-
Tank capacity	26.4 gal or 99.9 L
Hydraulic pressure	2900 psi or 200.0 bar
Max flow	39 gpm or 147.6 lpm

Drawbar specifications

Drawbar type	-
Claimed power	-
Drawbar horsepower	172.30 hp or 128.5 kW
Fuel consumption	12.0 gal/hour or 45.4 l/hour
Pulling power	16,954 lbs or 7690 kg

Power take-off (PTO) specs

Claimed power	200 hp or 149.1 kW
Real power	221.55 hp or 165.2 kW
Engine @RPM	540@2037 (rpm)
PTO Clutch	electro-hydraulic wet disc
Rear PTO	independent
Rear PTO RPM	540 (rpm)
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	12.0 gal/hour or 45.4 l/hour

3 point hitch specifiations

Hitch system	-
Rear hitch	III
Rear hitch lift	15,600 lbs or 7076 kg
Front hitch	II
Front hitch lift	7,700 lbs or 3492 kg

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