Allis Chalmers HD21 VS Ford 6640 specs comparison

Allis Chalmers HD21

General Infos

Make	Allis Chalmers
Model	HD21
Country	United states
Production	From 1954  Until 1965
Price	-
Tractor type	Agricultural Crawler tractor
Fuel	diesel
Service repair manual	Allis Chalmers HD21 Manual

Dimensions, sizes and tires

AG front tires	tracks
AG rear tires	tracks
Lawn front tires	-
Lawn rear tires	-
Indus front tires	-
Indus rear tires	-
Weight	45500 lbs or 20638 kg
Length	198 inches [502 cm]
Width	-
Height	99 inches [251 cm]
Wheelbase	-
Ground clearance	-
Turning radius	-
Rear tread size	-
Front tread size	-
Turning radius	-

Horsepower and engin specs

Engine capacity	844 ci or 13.8 L
Cylinders	6 cylinders
Engine power	225 hp or 167.8 kW
Engine RPM	1800 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	-
Fuel tank size	135 gal or 511.0 L
Oil capacity	-
Oil change	-
Starter motor	-
Starter volts	24 V
Parts And Accessories	Allis Chalmers HD21 Parts

Electrical and battery specs

Batteries number	2
Batteries voltage	12 V
Battries Amps	-
Cold Amps	-
Ground force	-
Charging system	-
Charging Volts	-
Charging Amps	-

Clutch and gearbox specs

Trans system	-
Trans type	torque converter
Trans gears	2 forward and 1 reverse
Clutch system	-

Cabine and mechanical specs

Wheel drive	crawler
Final drive	-
Steering	-
Braking system	contracting band
Cabin type	Open operator station
Differentiel lock	-

Hydraulics specifications

System	-
Valves	-
Pump flow	-
SVC flow	-
Steering flow	-
Tank capacity	-
Hydraulic pressure	-
Max flow	-

Drawbar specifications

Drawbar type	-
Claimed power	-
Drawbar horsepower	135.12 hp or 100.8 kW
Fuel consumption	-
Pulling power	40563 lbs or 18399 kg

Power take-off (PTO) specs

Claimed power	-
Real power	-
Engine @RPM	-
PTO Clutch	-
Rear PTO	-
Rear PTO RPM	-
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	-

3 point hitch specifiations

Hitch system	-
Rear hitch	-
Rear hitch lift	-
Front hitch	-
Front hitch lift	-

Ford 6640

General Infos

Make	Ford
Model	6640
Country	United states
Production	From 1991  Until 1995
Price	33,400  USD
Tractor type	Utility tractor
Fuel	diesel
Service repair manual	Ford 6640 Manual

Dimensions, sizes and tires

AG front tires	7.50-16
AG rear tires	16.9-30
Lawn front tires	-
Lawn rear tires	-
Indus front tires	-
Indus rear tires	-
Weight	7,099 lbs or 3220 kg
Length	162 inches [411 cm]
Width	80 inches [203 cm]
Height	107 inches [271 cm]
Wheelbase	93 inches [236 cm]
Ground clearance	-
Turning radius	-
Rear tread size	-
Front tread size	-
Turning radius	-

Horsepower and engin specs

Engine capacity	304 ci or 5.0 L
Cylinders	4 cylinders 8 valves
Engine power	-
Engine RPM	2200 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	-
Fuel tank size	25 gal or 94.6 L
Oil capacity	12.1 qts or 11.5 L
Oil change	-
Starter motor	-
Starter volts	12 V
Parts And Accessories	Ford 6640 Parts

Electrical and battery specs

Batteries number	1
Batteries voltage	12 V
Battries Amps	-
Cold Amps	800
Ground force	negative
Charging system	alternator
Charging Volts	-
Charging Amps	55 amps

Clutch and gearbox specs

Trans system	ElectroShift/Pulse Command
Trans type	four-speed power shift
Trans gears	16 forward and reverse
Clutch system	wet disc

Cabine and mechanical specs

Wheel drive	4x2 2WD
Final drive	inboard planetary
Steering	hydrostatic power
Braking system	mechanical (S)
Cabin type	Two-post foldable ROPS
Differentiel lock	mechanical (S)

Hydraulics specifications

System	open center
Valves	1 to 4
Pump flow	18.2 gpm or 68.9 lpm
SVC flow	-
Steering flow	-
Tank capacity	-
Hydraulic pressure	-
Max flow	-

Drawbar specifications

Drawbar type	-
Claimed power	-
Drawbar horsepower	67.18 hp or 50.1 kW
Fuel consumption	4.7 gal/hour or 17.8 l/hour
Pulling power	10,512 lbs or 4768 kg

Power take-off (PTO) specs

Claimed power	76 hp or 56.7 kW
Real power	75.63 hp or 56.4 kW
Engine @RPM	-
PTO Clutch	-
Rear PTO	independent
Rear PTO RPM	540 (rpm)
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	4.5 gal/hour or 17.0 l/hour

3 point hitch specifiations

Hitch system	Position control and top-link draft sensing
Rear hitch	II
Rear hitch lift	4,200 lbs or 1905 kg
Front hitch	-
Front hitch lift	-

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