Allis Chalmers Hd7W Production
Manufacturer: Allis Chalmers
Factory: Springfield, Illinois, USA
Years Built: 1940 – 1950
Allis Chalmers Hd7W Engine
General Motors 3-71, blower diesel, 3-cylinder, liquid-cooled 2-cycle vertical I-head, 213 ci [3.5 L]
Power: 50 hp [37.3 kW]
Drawbar: 57.31 hp [42.7 kW]
Bore: 4.25×5.00 inches [108 x 127 mm]
Air Cleaner: oil bath
Compression: 16.0:1
Rated RPM: 1500
Starter volts: 12
Allis Chalmers Hd7W Transmission
Transmission: sliding gear
Gears: 4 forward and 1 reverse
Speeds:
Allis Chalmers Hd7W Dimensions
Wheelbase: 64 inches [162 cm]
Weight: 14,000 lbs [6350 kg]
Allis Chalmers Hd7W Mechanical
Chassis: crawler
Steering: mechanical clutches
Brakes: mechanical contracting band
Cab: Open operator station.
Allis Chalmers Hd7W Hydraulics
HydraulicsType: open center
HydraulicsValves: 1 to 3
HydraulicsPumpFlow: 15 gpm [56.8 lpm]