Allis Chalmers WD tractor specifications

1948 - 1953

1948 - 1953 Row-Crop tractor

Production

Production Manufacturer:Allis Chalmers
Type:Row-Crop tractor
Factory:West Allis, Wisconsin, USA
Total built:146,125
Original price:$1,830
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.

Allis Chalmers WD Power

Allis Chalmers WD Power Drawbar (claimed):19 hp
14.2 kW
PTO (claimed):26 hp
19.4 kW
Drawbar (tested):30.23 hp
22.5 kW
Belt (tested):34.63 hp
25.8 kW
power test details ...

1948 - 1953

Row-Crop tractor

Nebraska Tractor Test 399

Nebraska Tractor Test 399
Tractor fuel 4-speed 2WD July 16 - 30, 1948 Link: Nebraska Tractor Test 399 file
Belt power (max):	26.14 hp 19.5 kW
Belt fuel use (max):	2.7 gal/hour 10.2 l/hour
Drawbar performance
Max power:	24.31 hp 18.1 kW
Gear 2 used for power test.
Max pull:	3,423 lbs 1552 kg
Gear 1 used for pull test.

Nebraska Tractor Test 440

Nebraska Tractor Test 440
Gasoline 4-speed 2WD May 17 - June 1, 1950 Link: Nebraska Tractor Test 440 file
Belt power (max):	34.63 hp 25.8 kW
Belt fuel use (max):	3.2 gal/hour 12.1 l/hour
Drawbar performance
Max power:	30.23 hp 22.5 kW
Gear 3 used for power test.
Max pull:	4,304 lbs 1952 kg
Gear 1 used for pull test.

Allis Chalmers WD Engines

Allis Chalmers WD Engines Allis Chalmers 3.3L 4-cyl tractor fuel Allis-Chalmers 3.3L 4-cyl gasoline Engine details ...

1948 - 1953

Row-Crop tractor

Engines overview

Engines overview
Allis Chalmers 3.3L 4-cyl tractor fuel
Allis-Chalmers 3.3L 4-cyl gasoline

Engine Detail

Engine Detail
Allis Chalmers
tractor fuel
4-cylinder 8-valve
liquid-cooled vertical I-head
Displacement:	201 ci 3.3 L
Bore/Stroke:	4.00x4.00 inches 102 x 102 mm
Compression:	4.5:1
Rated RPM:	1400
Firing order:	1-2-4-3
Starter:	electric
	hand crank
Starter volts:	6
Coolant capacity:	14 qts 13.2 L

Engine Detail

Engine Detail
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 ci 3.3 L
Bore/Stroke:	4.00x4.00 inches 102 x 102 mm
Compression:	5.75:1
Rated RPM:	1400
Firing order:	1-2-4-3
Starter:	electric
	hand crank
Starter volts:	6

Mechanical

Mechanical Chassis:4x2 2WD
Steering:manual worm and horizontal sector
Brakes:manual external compression band type
Cab:Open operator station.
Transmission:4-speed non-synchronized gear
Transmission details ...

1948 - 1953

Row-Crop tractor

Transmission

Transmission
Type:	non-synchronized gear
Gears:	4 forward and 1 reverse

Speeds

Speeds

Capacity

Capacity Fuel:15 gal
56.8 L
Hydraulic system:1.25 gal
4.7 L

Hydraulics

Hydraulics Type:open center
Capacity:1.25 gal
4.7 L
Pressure:1200 psi
82.7 bar
Valves:1*Optional

Tractor hitch

Tractor hitch Rear Type:Single Hitch Point

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:transmission
live*Optional
Rear RPM:540

Dimensions & Tires

Dimensions & Tires Wheelbase:88.1 inches
223 cm
Weight:3500 lbs
1587 kg
Front tire:5.50-16
Rear tire:11-28
Full dimensions and tires ...

1948 - 1953

Row-Crop tractor

Allis Chalmers WD Tires

Allis Chalmers WD Tires
Ag front:	5.50-16
Ag rear:	11-28
Ag rear:	12-28

Dimensions

Dimensions
Wheelbase:	88.1 inches 223 cm
Length:	127 inches 322 cm
Height:	81.5 inches 207 cm
Operating weight:	3500 lbs 1587 kg
Ballasted weight:	5050 lbs 2290 kg
Rear tread:	55.6 to 90.1 inches 141 to 228 cm

WD Serial Numbers

WD Serial Numbers Location:The WD serial number is stamped into the rear of the transmission case on the left side.
photo of WD serial number
1948:7
1949:9250
1950:35445
1951:72328
1952:105182
1953:131243

how to read serial numbers...