Allis Chalmers

HD-21

Farm tractor · 1967–1969 · 268 hp

The Allis Chalmers HD-21 is a farm tractor manufactured from 1967 to 1969. It features a Allis-Chalmers engine. The transmission is a torque converter type with 2 forward and 1 reverse.

Engine

EngineAllis-Chalmers
Fuel Typediesel
Cylinders6
Coolingliquid-cooled vertical I-head
Turbocharger Statussupercharged
Displacement844 ci (13.8 L)
Bore5.25 in (133 mm)
Stroke6.5 in (165 mm)
Compression Ratio13.3
Power Gross225 hp (167.8 kW)
Power Net268 hp (199.8 kW)
Power Rated225 hp (167.8 kW)
Power Drawbar135.12 hp (100.8 kW)
Air Cleaneroil bath
Starter Volts24
Starter Typeelectric
Coolant Capacity80 qts (75.7 L)
ManufacturerAllis-Chalmers
Rated1,800 RPM

Transmission

Transmission Typetorque converter
Gears2 forward and 1 reverse
Available Options2-speed torque converter

Dimensions

Length198 in (502 cm)
Height99 in (251 cm)

Weight

Weight45,500 lbs (20,638 kg)
Shipping50,000 lbs (22,680 kg)

Fuel

Capacity135 gal (511 L)