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Tractor · 1963Unverified

Allis Chalmers D21 Series I

Name: Allis Chalmers D21 Series I
Brand: Allis Chalmers

Allis Chalmers D21 Series I — Model year 1963-19651965-1969 · 103 hp. Reference specifications; pending source verification.

The Allis Chalmers D21 Series I is a tractor model with an approximate power output of 103 hp, typical of its class. It was produced from 1963 to 1969. The tractor is equipped with a 6-cylinder diesel liquid-cooled engine and a two-wheel drive system with an 8-speed gearbox. Its operating weight is listed at 4309 kg, making it suitable for use on farms of 200–800 acres.

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

Catalogue coverage

Variants represented

Richest spec table

90 rows

Recorded power

103 hp

Recorded weight

4309 kg

Transmissions

8-speed sliding gear

Production years

1963-1969

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

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.

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