Compare/Allis Chalmers D21 Series II vs Allis Chalmers HD14

Allis Chalmers D21 Series II vs Allis Chalmers HD14

Verdict: Allis Chalmers D21 Series II vs Allis Chalmers HD14

The Allis Chalmers D21 Series II and the Allis Chalmers HD14 are both tractors — here is how they stack up on the figures that matter. Allis Chalmers D21 Series II leads on rated power with 128 hp against 127 hp. Allis Chalmers D21 Series II is the lighter machine (4,309 kg vs 28,750 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers HD14 holds more fuel (257.4 L vs 196.8 L) for longer stints between fills. Allis Chalmers D21 Series II is the newer design (1963 vs 1939). In short: choose the Allis Chalmers D21 Series II for outright pulling power, or the Allis Chalmers HD14 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

128 hp

127 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

With 18.4x34 rear tires.Reference

Gear 1 used for pull test.Reference

Total built

2,409Reference

6,405Reference

Drive

—

crawlerReference

Engine

Fuel tank

196.8 LReference

257.4 LReference

Plows

7Reference

—

Drawbar (tested)

86.8 kWReference

94.7 kWReference

Displacement

7.0 LReference

Bore/Stroke

108 x 127 mmReference

Compression

16.0:1Reference

Rated RPM

2200Reference

1500Reference

Firing order

1-5-3-6-2-4Reference

—

Oil capacity

87.1 LReference

37.9 LReference

Coolant capacity

29.3 LReference

45.4 LReference

Intake valve clearance

0.381 mmReference

—

Exhaust valve clearance

0.381 mmReference

—

Power at rated engine speed

95.3 kWReference

—

Max power

86.8 kWReference

94.7 kWReference

Drawbar (claimed)

—

94.7 kWReference

Belt (claimed)

—

108.1 kWReference

Belt (tested)

—

108.4 kWReference

Starter volts

—

12Reference

Belt power (max)

—

108.4 kWReference

Transmission

Power DirectorReference

—

Type

sliding gearReference

torque converterReference

Gears

8 forward and 2 reverseReference

3 forward and 1 reverseReference

Clutch

dry discReference

—

PTO & Hydraulics

PTO (claimed)

90.2 kWReference

—

PTO (tested)

95.3 kWReference

—

Rear Type

III/IIReference

—

Rear PTO

independentReference

—

Rear PTO Type

1000Reference

—

Dimensions

Wheelbase

244 cmReference

—

Weight

4309 kgReference

28750 to 29330 poundsReference

Front tire

7.50x20Reference

—

Rear tire

18.4x34Reference

—

Ag front

11.00x16Reference

—

Ag rear

24.5x32Reference

—

Length

407 cmReference

419 cmReference

Width

232 cmReference

233 cmReference

Shipping weight

4309 kgReference

—

Ballasted weight

5307 kgReference

—

Clearance (front axle)

54 cmReference

—

Clearance (rear axle)

67 cmReference

—

Rear axle

82 mmReference

—

Steering wheel

229 cmReference

—

Height

—

203 cmReference

Operating weight

—

13304 kgReference

Gauge

—

172 cmReference

D21 Serial Number Location

D21 Serial Numbers

1963

100 (Series I)Reference

—

1964

1417 (Series I)Reference

—

1965

2130 (Series II)Reference

—

1966

2408 (Series II)Reference

—

1967

2863 (Series II)Reference

—

1968

3777 (Series II)Reference

—

1969

4498 (Series II)Reference

—

Final

4609 (Series II)Reference

6422Reference

Electrical

Ground

negativeReference

—

Charging system

Delco-Remy generatorReference

—

Charging amps

32Reference

—

Batteries

4Reference

—

Battery volts

12Reference

—

Battery AH

95Reference

—

Allis Chalmers D21 Height

Hood

182 cmReference

—

Exhaust

270 cmReference

—

Test results

Fuel use

29.9 l/hourReference

—

Max pull

6922 kgReference

12709 kgReference

Belt fuel use (max)

—

36.3 l/hourReference

Speeds

Variants

HD14C

—

torque converterReference

HD14 Serial Numbers

1939

—

18Reference

1940

—

26Reference

1941

—

549Reference

1942

—

1166Reference

1943

—

2113Reference

1944

—

3138Reference

1945

—

4259Reference

1946

—

5455Reference

1947

—

5815Reference

Location:

—

Behind transmission case, right sideReference

Allis Chalmers HD14 Tracks

Length on ground

—

216 cmReference

Area on ground

—

2.4 m²Reference

Ground pressure

—

0.5 barReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.