Tractor · 1963Unverified
Allis Chalmers D21 Series I
Allis Chalmers D21 Series I — Model year 1963-19651965-1969 · 103 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
103 hp
Max power
69.4 kW
Weight
4309 kg
Hover a source tag to verify
Overview
ManufacturerAllis ChalmersReference
Row-Crop tractorReference
Built in West Allis, Wisconsin, USAReference
Total built1,129Reference
Original price was $5,700 in 1964Reference
The D21 was the first Allis Chalmers tractor to have over 100 horsepower. The upgraded D21 II began at serial number 2201 in 1965.Reference
Two-wheel driveReference
Power steeringReference
Band actuated disc brakesReference
Open operator station.Reference
Engine
Allis Chalmers 7.0L 6-cyl dieselReference
Fuel tank196.8 LReference
Engine88.7 kWReference
Drawbar (claimed)69.4 kWReference
Plows7Reference
Drawbar (tested)69.4 kWReference
Allis Chalmers 3400Reference
dieselReference
6-cylinderReference
liquid-cooledReference
Displacement7.0 LReference
Bore/Stroke108 x 127 mmReference
Power88.7 kWReference
Air cleanerdryReference
Compression16.0:1Reference
Rated RPM2200Reference
Firing order1-5-3-6-2-4Reference
Coolant capacity19.9 LReference
Intake valve clearance0.381 mmReference
Exhaust valve clearance0.381 mmReference
Oil capacity11.4 LReference
Power at rated engine speed76.9 kWReference
Max power69.4 kWReference
Transmission
8-speed sliding gearReference
TransmissionPower DirectorReference
Typesliding gearReference
Gears8 forward and 2 reverseReference
Clutchdry discReference
Oil capacity64.4 LReference
Oil capacity87.1 LReference
Transmission is controlled by means of a range control knob and a gear shift lever. The range knob is located below the steering wheel, pushing it forward puts the tractor in high range, pull it back engages low range. The gear shift selects one of four forward gears, or reverse. The tractor must be stopped and clutch used to change gears or range.Reference
PTO & Hydraulics
PTO (claimed)76.8 kWReference
PTO (tested)76.9 kWReference
Rear TypeIII/IIReference
Rear PTOindependentReference
Rear PTO Type1000Reference
Dimensions
Wheelbase244 cmReference
Weight4309 kgReference
Front tire7.50x20Reference
Rear tire18.4x34Reference
Ag front7.50x20Reference
Ag rear18.4x34Reference
Ag front11.00x16Reference
Ag rear24.5x32Reference
Length407 cmReference
Width232 cmReference
Shipping weight4309 kgReference
Ballasted weight5307 kgReference
Clearance (front axle)54 cmReference
Clearance (rear axle)67 cmReference
Steering wheel229 cmReference
D21 Serial Numbers
Location:Serial number on the left side of the Allis-Chalmers D21, stamped into the flange near the starter mounting.Reference
1963100 (Series I)Reference
19641417 (Series I)Reference
19652079 (Series I)Reference
Final2129 (Series I)Reference
19652130 (Series II)Reference
19662408 (Series II)Reference
19672863 (Series II)Reference
19683777 (Series II)Reference
19694498 (Series II)Reference
Final4609 (Series II)Reference
FAQ: How to read a serial number table.Reference
Electrical
GroundnegativeReference
Charging systemDelco-Remy generatorReference
Charging amps32Reference
Batteries2Reference
Batteries4Reference
Battery volts12Reference
Battery AH95Reference
Allis Chalmers D21 Height
Hood182 cmReference
Exhaust270 cmReference
Test results
Diesel 8-speed 2WDOctober 15, 1963 - October 21, 1953Link: Nebraska Tractor Test 855 fileReference
PTO performanceReference
Fuel use26.9 l/hourReference
Drawbar performanceReference
Gear 4 used for power test.Reference
Max pull6731 kgReference
Gear 2 used for pull test.Reference
Speeds
With 18.4x34 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.