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| info | |
| The Allis-Chalmers H3 crawler was based on the gas-powered D15 farm tractor. |
| Production | |
| Manufacturer: | Allis Chalmers |
| Factory: | Springfield, Illinois, USA |
| Variants | |
| H3: | gas engine |
| HD3: | diesel engine |
| Capacity | |
| Fuel: | 14 gal [53.0 L] |
| Hydraulic system: | 16.5 gal [62.5 L] |
| Power Take-off (PTO) | |
| Rear PTO: | optional |
| Rear RPM: | 540 |
| Dimensions & Tires | |
| Wheelbase: | 64 inches [162 cm] |
| Weight: | 7395 lbs [3354 kg] |
| Front tire: | tracks |
| Rear tire: | tracks |
| Allis Chalmers H3 Power | |
| Drawbar (tested): | 25.48 hp [19.0 kW] |
| PTO (tested): | 32.11 hp [23.9 kW] |
| Mechanical | |
| Chassis: | crawler |
| Steering: | mechanical clutches |
| Brakes: | mechanical contracting band |
| Cab: | Open operator station. |
| Hydraulics | |
| Type: | open center |
| Capacity: | 16.5 gal [62.5 L] |
| Valves: | 1 to 3 |
| Pump flow: | 15 gpm [56.8 lpm], 25 gpm [94.6 lpm] (optional) |
| Battery | |
| Number: | 1 |
| Volts: | 12 |
| info | |
| Bore/Stroke: | 3.50x3.875 inches [89 x 98 mm] |
| Fuel system: | Marvel-Schebler carburetor |
| Air cleaner: | oil bath |
| Compression: | 7.5:1 |
| Rated RPM: | 1650 |
| Starter: | electric |
| Starter volts: | 12 |
| Coolant capacity: | 9 qts [8.5 L] |
| Engine Detail | |
| Allis Chalmers, gasoline, 4-cylinder, liquid-cooled, 149 ci [2.4 L] |
| Transmission | |
| Transmission: | Power Director |
| Type: | two-speed power shift |
| Gears: | 8 forward and 2 reverse |
| Clutch: | wet disc (Power Director), dry disc (gear) |
| Four gears (1-4) plus reverse (R) with two-speed high/low power shift. | |
| Dimensions | |
| Weight: | 7395 lbs [3354 kg] |
| Wheelbase: | 64 inches [162 cm] |
| Length: | 108.75 inches [276 cm] |
| Height (hood): | 48.3 inches [122 cm] |
| Height (exhaust): | 71.7 inches [182 cm] |
| Front tread: | 48 inches [121 cm] |
| Rear tread: | 48 inches [121 cm] |
| Allis Chalmers H3 Tires | |
| Ag front: | 7-inch track, 10-inch track, 12-inch track, 14-inch track |
| Ag rear: | 7-inch track, 10-inch track, 12-inch track, 14-inch track |