Allis Chalmers HD21 VS Farmall 656 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	-

Farmall 656

General Infos

Make	Farmall
Model	656
Country	United states
Production	From 1965  Until 1973
Price	-
Tractor type	utility tractor
Fuel	diesel
Service repair manual	Farmall 656 Manual

Dimensions, sizes and tires

AG front tires	6.00-16
AG rear tires	15.5-38
Lawn front tires	-
Lawn rear tires	-
Indus front tires	-
Indus rear tires	-
Weight	6,250 lbs or 2835 kg
Length	152 inches [386 cm]
Width	87 inches [220 cm]
Height	-
Wheelbase	96.3 inches [244 cm]
Ground clearance	-
Turning radius	9.7 feet [3.0 m]
Rear tread size	50 to 96 inches
Front tread size	8 inches
Turning radius	-

Horsepower and engin specs

Engine capacity	263 ci or 4.3 L
Cylinders	6 cylinders
Engine power	-
Engine RPM	1800 (rpm)
Torque	-
Torque RPM	-
Fuel type	diesel
Fuel injection	-
Fuel tank size	33 gal or 124.9 L
Oil capacity	9 qts or 8.5 L
Oil change	-
Starter motor	-
Starter volts	12 V
Parts And Accessories	Farmall 656 Parts

Electrical and battery specs

Batteries number	1
Batteries voltage	12 V
Battries Amps	50 amps
Cold Amps	-
Ground force	-
Charging system	-
Charging Volts	-
Charging Amps	55 amps

Clutch and gearbox specs

Trans system	hydrostatic
Trans type	-
Trans gears	infinite (2-range) forward and reverse
Clutch system	-

Cabine and mechanical specs

Wheel drive	4x2 2WD
Final drive	-
Steering	hydrostatic power
Braking system	independent mechanical disc
Cabin type	Open operator station
Differentiel lock	-

Hydraulics specifications

System	-
Valves	-
Pump flow	-
SVC flow	-
Steering flow	-
Tank capacity	-
Hydraulic pressure	-
Max flow	12 gpm or 45.4 lpm

Drawbar specifications

Drawbar type	-
Claimed power	-
Drawbar horsepower	50.09 hp or 37.4 kW
Fuel consumption	6.4 gal/hour or 24.2 l/hour
Pulling power	7,587 lbs or 3441 kg

Power take-off (PTO) specs

Claimed power	63 hp or 47.0 kW
Real power	60.81 hp or 45.3 kW
Engine @RPM	1000@1800 (rpm)
PTO Clutch	-
Rear PTO	independent
Rear PTO RPM	540 (rpm)
Front PTO	-
Front PTO RPM	-
Mid PTO	-
Mid PTO RPM	-
Fuel consumption	5.6 gal/hour or 21.2 l/hour

3 point hitch specifiations

Hitch system	-
Rear hitch	2/1
Rear hitch lift	-
Front hitch	-
Front hitch lift	-

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