Allis Chalmers D12
Production ended · 2WD
Power
Power specifications| Engine | 31 hp unspecified |
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| PTO | 30 hp claimed |
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| PTO, tested | 33.3 hp |
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| Drawbar | 25.8 hp claimed |
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| Drawbar, tested | 29.4 hp |
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| Listed power | 31 hp engine basis |
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Engines
Engines fitted to the Allis Chalmers D12| Allis-Chalmers 2.3L 4-cyl gasolineGasoline · 4 cyl | 139 ci |
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| Allis-Chalmers 2.4L 4-cyl gasolineGasoline · 4 cyl | 149 ci |
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Engine details
- Allis-Chalmers 2.3L 4-cyl gasoline
- Bore × stroke
- 3.38 in × 3.88 in
- Rated speed
- 1,650 rpm
- Rated power
- 31 hp
- Compression
- 7.75:1
- Cooling
- liquid-cooled vertical L-head
- Notes
- Original engine, used until 149 ci engine appeared in 1961.
- Allis-Chalmers 2.4L 4-cyl gasoline
- Bore × stroke
- 3.5 in × 3.88 in
- Rated speed
- 1,650 rpm
- Compression
- 7.5:1
- Cooling
- liquid-cooled
- Firing order
- 1-2-4-3
- Notes
- The larger, 149 cubic inch, engine was introduced on the D12 at serial number 3001 in 1961.
Transmissions
Transmissions for the Allis Chalmers D12| 4-speed sliding gearsliding gear | 4F / 1R |
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Weight
Weight specifications| Weight | 2,800 lb shipping |
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| Shipping | 2,800 lb |
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| Ballasted | 5,630 lb |
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Dimensions
Dimensions specifications| Wheelbase | 78.8 in |
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| Length | 121 in |
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| Front axle clearance | 20.3 in |
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| Rear axle clearance | 22.2 in |
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| Front tread, narrowest | 49.3 in |
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| Front tread, widest | 80 in |
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| Rear tread, narrowest | 52 in |
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| Rear tread, widest | 79.2 in |
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Capacities
Capacities specifications| Fuel tank | 12.5 gal |
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Hydraulics
Hydraulics specifications| System | live |
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| Pump flow | no record |
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| Remote valves | 1 or 2 |
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Hitch
Hitch specifications| Rear hitch category | I |
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| Hitch type | Snap-Couple |
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| Rear lift capacity | no record |
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PTO
PTO specifications| Rear PTO speeds | 540 |
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Chassis
Chassis specifications| Drive | 2WD |
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| Cab | Open operator station |
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Tires
Tires specifications| Front | 5.00x15 |
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| Rear | 10x24 |
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Production
Production specifications| Factories | West Allis, Wisconsin, USA |
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| Built by | Allis Chalmers |
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