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| info | |
| The Allis-Chalmers model B was the result of research by Harry Merritt, Allis tractor division manager, into U.S. farm sizes in the early 1930s. At that time, most tractors were being used on farms larger than 100 acres, while more than half of all farms were under 100 acres. The Allis B was specifically designed to enter into the small-farm market, and early literature focused on the economy of using tractors instead of horses. |
| Production | |
| Manufacturer: | Allis Chalmers |
| Factory: | West Allis, Wisconsin, USA, Southampton, England |
| Total built: | 120,783 |
| Original price (USD), $1,500 (1957 ), | |
| Variants | |
| IB: | industrial tractor |
| Capacity | |
| Fuel: | 12 gal [45.4 L] |
| Rear Hitch | |
| Type: | Allis Snap Coupler |
| Power Take-off (PTO) | |
| Rear PTO: | transmission |
| Rear RPM: | 560 |
| Dimensions & Tires | |
| Wheelbase: | 73.4 inches [186 cm] |
| Weight: | 2060 lbs [934 kg] |
| Front tire: | 4.00-15 |
| Rear tire: | 9-24 |
| B Serial Numbers | |
| Location: | On top of transmission case, by shift lever. English-built models have an 'EB' serial number. |
| Allis Chalmers B Power | |
| Plows: | 1 (16-inch) |
| Drawbar (tested): | 19.51 hp [14.5 kW] |
| Belt (tested): | 22.25 hp [16.6 kW] |
| Mechanical | |
| Chassis: | 4x2 2WD |
| Steering: | manual |
| Brakes: | differential mechanical contracting band |
| Cab: | Open operator station. Canvas cab optional. |
| Belt Pulley | |
| Diameter: | 8 inches [20 cm] |
| Width: | 5.5 inches [13 cm] |
| RPM: | 1053 |
| Electrical | |
| Ground: | positive |
| Charging system: | generator |
| Charging amps: | 12 |
| Battery | |
| Number: | 1 |
| Volts: | 6 |
| info | |
| Bore/Stroke: | 3.375x3.50 inches [86 x 89 mm] |
| Air cleaner: | oil bath |
| Compression: | 5.75:1 |
| Rated RPM: | 1500 |
| Firing order: | 1-2-4-3 |
| Starter volts: | 6 |
| Oil capacity: | 4 qts [3.8 L] |
| Sparkplug: | Autolite AN 7, AC 45 |
| Sparkplug gap: | 0.035 inches [0.889 mm] |
| Point gap: | 0.020 inches [0.508 mm] |
| Intake valve clearance: | 0.010 inches [0.254 mm] (hot) |
| Exhaust valve clearance: | 0.010 inches [0.254 mm] (hot) |
| Engine Detail | |
| Final engine, used from 1943 on, SN 64501, Allis-Chalmers CE, gasoline, 4-cylinder, liquid-cooled, 125.2 ci [2.1 L] |
| Transmission | |
| Type: | unsynchronized gear |
| Gears: | 3 forward and 1 reverse |
| Clutch: | dry disc |
| Oil capacity: | 6 qts [5.7 L] |
| info | |
| 32oF [0oC]↑: | : SAE140 |
| 32oF [0oC]↓: | : SAE90 |
| Dimensions | |
| Weight (shipping): | 2060 lbs [934 kg] |
| Weight (ballasted): | 4193 lbs [1901 kg] |
| Wheelbase: | 73.4 inches [186 cm] |
| Length: | 110.25 inches [280 cm] |
| Width: | 52.7 inches [133 cm] (minimum), 62 inches [157 cm] (maximum) |
| Height (exhaust): | 76.75 inches [194 cm] |
| Ground clearance: | 21.75 inches [55 cm], 28 inches [71 cm] (Asparagus Special) |
| Front tread: | 42 inches [106 cm] 38 to 60 inches [96 to 152 cm] |
| Rear tread: | 40 to 52 inches [101 to 132 cm] 40 to 60 inches [101 to 152 cm] |
| 2WD turn radius: | 7.75 feet [2.4 m] (with brakes) |
| Allis Chalmers B Tires | |
| Ag front: | 4.00-15 |
| Ag rear: | 9-24 |