John Deere 8640 VS Simplicity 9523 specs comparison

John Deere 8640

General Infos

Make	John Deere
Model	8640
Country	United states
Production	From 1979  Until 1982
Price	-
Tractor type	Four wheel Drive (4WD) tractor
Fuel	diesel
Service repair manual	John Deere 8640 Manual

Dimensions, sizes and tires

AG front tires	18.4-34
AG rear tires	18.4-34
Lawn front tires	-
Lawn rear tires	-
Indus front tires	-
Indus rear tires	-
Weight	28,270 lbs or 12823 kg
Length	223.5 inches [567 cm]
Width	-
Height	126.6 inches [321 cm]
Wheelbase	125 inches [317 cm]
Ground clearance	18.4 inches [46 cm]
Turning radius	-
Rear tread size	63 to 130 inches
Front tread size	63 to 130 inches
Turning radius	-

Horsepower and engin specs

Engine capacity	619 ci or 10.1 L
Cylinders	6 cylinders
Engine power	275 hp or 205.1 kW
Engine RPM	2100 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	-
Fuel tank size	214 gal or 810.0 L
Oil capacity	26 qts or 24.6 L
Oil change	-
Starter motor	-
Starter volts	12 V
Parts And Accessories	John Deere 8640 Parts

Electrical and battery specs

Batteries number	2
Batteries voltage	6 V
Battries Amps	-
Cold Amps	975
Ground force	negative
Charging system	alternator
Charging Volts	-
Charging Amps	90 amps

Clutch and gearbox specs

Trans system	John Deere Quad-Range
Trans type	partial power shift
Trans gears	16 forward and 6 reverse
Clutch system	hydraulic wet disc

Cabine and mechanical specs

Wheel drive	4x4 articulated 4WD
Final drive	-
Steering	articulated power
Braking system	hydraulic wet disc
Cabin type	Cab standard
Differentiel lock	hydraulic front and rear

Hydraulics specifications

System	closed center
Valves	2
Pump flow	33 gpm or 124.9 lpm
SVC flow	-
Steering flow	-
Tank capacity	41 gal or 155.2 L
Hydraulic pressure	-
Max flow	-

Drawbar specifications

Drawbar type	-
Claimed power	-
Drawbar horsepower	203.34 hp or 151.6 kW
Fuel consumption	14.5 gal/hour or 54.9 l/hour
Pulling power	27,782 lbs or 12601 kg

Power take-off (PTO) specs

Claimed power	225 hp or 167.8 kW
Real power	228.75 hp or 170.6 kW
Engine @RPM	1000@2100 (rpm)
PTO Clutch	-
Rear PTO	independent
Rear PTO RPM	1000 (rpm)
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	14.7 gal/hour or 55.6 l/hour

3 point hitch specifiations

Hitch system	-
Rear hitch	III/IIIN
Rear hitch lift	8545 lbs or 3876 kg
Front hitch	-
Front hitch lift	-

Simplicity 9523

General Infos

Make	Simplicity
Model	9523
Country	United states
Production	From 1978  Until 1983
Price	-
Tractor type	Sub Compact Utility tractor
Fuel	diesel
Service repair manual	Simplicity 9523 Manual

Dimensions, sizes and tires

AG front tires	4.00x12
AG rear tires	9.5x24
Lawn front tires	20x8.00-10
Lawn rear tires	20x8.00-10
Indus front tires	-
Indus rear tires	-
Weight	1,825 lbs or 827 kg
Length	98.9 inches [251 cm]
Width	48 inches [121 cm]
Height	-
Wheelbase	59.8 inches [151 cm]
Ground clearance	-
Turning radius	-
Rear tread size	37/41.7 inches
Front tread size	37.4/44.1 inches
Turning radius	-

Horsepower and engin specs

Engine capacity	77.1 ci or 1.3 L
Cylinders	2 cylinders
Engine power	23 hp or 17.2 kW
Engine RPM	2500 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	Kiki NP-PE injection
Fuel tank size	7 gal or 26.5 L
Oil capacity	5 qts or 4.7 L
Oil change	50 h
Starter motor	electric
Starter volts	12 V
Parts And Accessories	Simplicity 9523 Parts

Electrical and battery specs

Batteries number	1
Batteries voltage	12 V
Battries Amps	70 amps
Cold Amps	-
Ground force	negative
Charging system	Hitachi LR115-58 alternator
Charging Volts	12 V
Charging Amps	15 amps

Clutch and gearbox specs

Trans system	-
Trans type	unsynchronized gear
Trans gears	8 forward and 2 reverse
Clutch system	215mm dry disc

Cabine and mechanical specs

Wheel drive	4x2 2WD
Final drive	-
Steering	-
Braking system	drum
Cabin type	Open operator station
Differentiel lock	rear standard

Hydraulics specifications

System	gear pump
Valves	-
Pump flow	-
SVC flow	-
Steering flow	-
Tank capacity	5.5 gal or 20.8 L
Hydraulic pressure	-
Max flow	5.44 gpm or 20.6 lpm

Drawbar specifications

Drawbar type	-
Claimed power	-
Drawbar horsepower	-
Fuel consumption	-
Pulling power	-

Power take-off (PTO) specs

Claimed power	21 hp or 15.7 kW
Real power	-
Engine @RPM	540@2300 (rpm)
PTO Clutch	-
Rear PTO	continuous
Rear PTO RPM	540 (rpm)
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	-

3 point hitch specifiations

Hitch system	position control
Rear hitch	I
Rear hitch lift	-
Front hitch	-
Front hitch lift	-

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