Tractor · 1959Unverified
Allis Chalmers D12
Allis Chalmers D12 — D Series · 29 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
29 hp
Max power
17.6 kW
Weight
1270 kg
Hover a source tag to verify
Overview
ManufacturerAllis ChalmersReference
Row-Crop tractorReference
Built in West Allis, Wisconsin, USAReference
Original price$3,522 (1968)Reference
Two-wheel driveReference
Open operator station.Reference
Variants
D12 High Clearancecultivation tractorReference
D10single-row tractorReference
Engine
Allis-Chalmers 2.3L 4-cyl gasolineReference
Allis-Chalmers 2.4L 4-cyl gasolineReference
Fuel tank47.3 LReference
Engine23.1 kWReference
Drawbar (claimed)19.2 kWReference
Drawbar (tested)21.9 kWReference
Allis-ChalmersReference
gasolineReference
4-cylinderReference
liquid-cooled vertical L-headReference
Original engine, used until 149 ci engine appeared in 1961.Reference
Displacement2.3 LReference
Bore/Stroke86 x 98 mmReference
Power23.1 kWReference
Air cleaneroil bathReference
Compression7.75:1Reference
Rated RPM1650Reference
Starter volts6Reference
Oil capacity3.8 LReference
Coolant capacity7.6 LReference
liquid-cooledReference
The larger, 149 cubic inch, engine was introduced on the D12 at serial number 3001 in 1961.Reference
Displacement2.4 LReference
Bore/Stroke89 x 98 mmReference
Compression7.5:1Reference
Firing order1-2-4-3Reference
Power at rated engine speed21.3 kWReference
Max power17.6 kWReference
Power at rated engine speed24.8 kWReference
Max power21.9 kWReference
Transmission
4-speed sliding gearReference
Typesliding gearReference
Gears4 forward and 1 reverseReference
PTO & Hydraulics
PTO (claimed)22.4 kWReference
PTO (tested)24.8 kWReference
TypeliveReference
Valves1 or 2Reference
Rear TypeIReference
TypeSnap-CoupleReference
Rear PTO Type540Reference
Dimensions
Wheelbase200 cmReference
Weight1270 kgReference
Front tire5.00x15Reference
Rear tire10x24Reference
Ag front5.00x15Reference
Ag rear10x24Reference
Ag rear11x24Reference
Length307 cmReference
Height (hood)133 cmReference
Height (exhaust)194 cmReference
Shipping weight1270 kgReference
Ballasted weight2553 kgReference
Clearance (front axle)51 cmReference
Clearance (rear axle)56 cmReference
Front tread125 to 203 cmReference
Rear tread132 to 201 cmReference
D12 Serial Number Location
Serial number stamped into the flange where the engine and transmission meet on the left side of the tractor.Reference
D12 Serial Numbers
19591001Reference
19601950Reference
19612801Reference
19623638Reference
19635501Reference
19646012Reference
19659192Reference
19669508Reference
19679830Reference
FAQ: How to read a serial number table.Reference
Capacities
RPM1220Reference
Speed779.07 meters/minReference
Test results
NTTL 723: 138 gasoline 4-speed 2WDReference
NTTL 813: 149 gasoline 4-speed 2WDReference
138 gasoline 4-speed 2WDOctober 13 - 20, 1959Link: Nebraska Tractor Test 723 fileReference
PTO performanceReference
Fuel use8.7 l/hourReference
Drawbar performanceReference
Fuel use8.3 l/hourReference
Gear 3 used for power test.Reference
Max pull1832 kgReference
Gear 1 used for pull test.Reference
149 gasoline 4-speed 2WDApril 4 - 19, 1962Link: Nebraska Tractor Test 813 fileReference
Fuel use10.2 l/hourReference
Fuel use10.6 l/hourReference
Max pull1923 kgReference
Speeds
Allis D12 with 10x24 rear tires.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.