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Years in Production / 1948–1953
Allis-Chalmers
WD
Explore the specifications, hardware, and original references for the Allis-Chalmers WD.
28hp
Engine estimate · from PTO
2WD Only
Drive
1948–1953
Production years
Allis-Chalmers
Manufacturer
WD / 01
At a glance
Production
Row-Crop tractor
Built in West Allis, Wisconsin, USA
The Allis-Chalmers WD featured Two-Clutch Power Control and power-shifted rear wheels. The dual clutch system used a foot-operated dry clutch to disconnect the PTO and driveline from the engine. A hand-operated wet clutch allowed the PTO to operate while the tractor was slowed or stopped.
- Manufacturer
- Allis Chalmers
- Total Built
- 146,125
- Original Price
- $1,830
Mechanical
Two-wheel drive
Manual external compression band type brakes
Open operator station.
- Steering
- manual worm and horizontal sector
Capacity
- Fuel
- 15 gal56.8 L
- Hydraulic System
- 1.25 gal4.7 L
Hydraulics
- Type
- open center
- Capacity
- 1.25 gal4.7 L
- Pressure
- 1200 psi82.7 bar
- Valves
- 1 OptOptional
Hitch
- Rear Type
- Single Hitch Point
Pto
- Rear Pto
- transmission
- Rear Pto
- live OptOptional
- Rear Type
- 540
Serial Numbers
FAQ: How to read a serial number table.
- 1948
- 7
- 1949
- 9250
- 1950
- 35445
- 1951
- 72328
- 1952
- 105182
- 1953
- 131243
Electrical
- Ground
- positive
- Charging System
- Delco generator
- Battery Volts
- 6
WD / 02
Under the hood
Engine Detail (Option 1)
Allis Chalmers
tractor fuel
4-cylinder 8-valve
liquid-cooled vertical I-head
- Displacement
- 201 ci3.3 L
- Bore Stroke
- 4.00x4.00 inches102 x 102 mm
- Compression Ratio
- 4.5:1
- Rated Rpm
- 1400
- Firing Order
- 1-2-4-3
- Starter
- electric
- Starter
- hand crank
- Starter Volts
- 6
- Coolant Capacity
- 14 qts13.2 L
- Cylinders
- 4
- Cooling
- liquid-cooled vertical I-head
Engine Detail (Option 2)
Allis-Chalmers
gasoline
4-cylinder 8-valve
liquid-cooled vertical I-head
In 1953 (SN 136318) a distributor ignition system replaced the older magneto system.
- Displacement
- 201 ci3.3 L
- Bore Stroke
- 4.00x4.00 inches102 x 102 mm
- Compression Ratio
- 5.75:1
- Rated Rpm
- 1400
- Firing Order
- 1-2-4-3
- Starter
- electric
- Starter
- hand crank
- Starter Volts
- 6
- Fuel Type
- gasoline
- Cylinders
- 4
- Cooling
- liquid-cooled vertical I-head
WD / 03
Gears & controls
Transmission
- Transmission Type
- non-synchronized gear
- Gears
- 4 forward and 1 reverse
WD / 04
Size. Stance. Footprint.
Dimensions
- Length
- 127 in322 cm
- Height
- 81.5 in207 cm
- Wheelbase
- 88.1 in223 cm
- Rear tread
- 55.6 in141 cm
Dimensions And Tires
- Wheelbase
- 88.1 inches223 cm
- Weight
- 3500 lbs1587 kg
- Front Tire
- 5.50-16
- Rear Tire
- 11-28
Tires And Tracks
- Front Ag
- 5.50-16
- Rear Ag
- 11-28
- Rear Ag
- 12-28
WD / 05
Tractor Photos
See it in action
Videos
Watch Allis-Chalmers WD videos from their original YouTube creators.
WD / 07
Tests (NTTL)
Nebraska Tractor Test 399
Tractor fuel 4-speed 2WDJuly 16 - 30, 1948
Drawbar performance
Gear 2 used for power test.
Gear 1 used for pull test.
- Id
- 399
- Belt Power Max
- 26.14 hp19.5 kW
- Belt Fuel Use Max
- 2.7 gal/hour10.2 l/hour
- Max Power
- 24.31 hp18.1 kW
- Max Pull
- 3,423 lbs1552 kg
Nebraska Tractor Test 440
Gasoline 4-speed 2WDMay 17 - June 1, 1950
Drawbar performance
Gear 3 used for power test.
Gear 1 used for pull test.
- Id
- 440
- Belt Power Max
- 34.63 hp25.8 kW
- Belt Fuel Use Max
- 3.2 gal/hour12.1 l/hour
- Max Power
- 30.23 hp22.5 kW
- Max Pull
- 4,304 lbs1952 kg