Allis Chalmers B

Allis Chalmers B Technical Specifications

Allis Chalmers B is a Row-Crop tractor that was produced by the John Deere between 1938 – 1957.

Below you will find detailed technical specifications for Allis Chalmers B covering engine types, horsepower ratings, weight, height, fuel type and tank volume, oil capacity and type, hydraulic system diagram, wiring diagram, battery specs, etc.

Allis Chalmers B Production

Manufacturer Allis Chalmers
Row-Crop tractor
Factories West Allis, Wisconsin, USA
  Southampton, England
Total built 120,783
Original price was $1,500 in 1957
The Allis-Chalmers model B was the result of research by Harry Merritt, Allis tractor division manager, into U.S. farm sizes in the early 1930s. At that time, most tractors were being used on farms larger than 100 acres, while more than half of all farms were under 100 acres. The Allis B was specifically designed to enter into the small-farm market, and early literature focused on the economy of using tractors instead of horses.

Allis Chalmers B Power

Engine: 19.51 hp
14.5 kW
Belt (tested) 22.25 hp
16.6 kW

Allis Chalmers B Electrical

Ground positive
Charging system generator
Charging amps 12
Battery volts 6

Allis Chalmers B Mechanical

Two-wheel drive
Steering manual
Differential mechanical contracting band brakes
Open operator station. Canvas cab optional.

Tracktor Hitch

Type Allis Snap Coupler

Power Take-off (PTO)

Rear PTO transmission
Rear RPM 560

Allis Chalmers B Engine detail

Engine Detail
Allis-Chalmers CE
Final engine, used from 1943 on, SN 64501
Displacement 125.2 ci
2.1 L
Bore/Stroke 3.375×3.50 inches
86 x 89 mm
Air cleaner oil bath
Compression 5.75:1
Rated RPM 1500
Firing order 1-2-4-3
Starter volts 6
Oil capacity 4 qts
3.8 L
Sparkplug Autolite AN 7
  AC 45
Sparkplug gap 0.035 inches
0.889 mm
Point gap 0.020 inches
0.508 mm
Intake valve clearance 0.010 inches (hot)
0.254 mm
Exhaust valve clearance 0.010 inches (hot)
0.254 mm

Engine Oil
Oil capacity 4 qts
3.8 L

Allis Chalmers B Transmission overview

Type unsynchronized gear
Gears 3 forward and 1 reverse
Clutch dry disc
Oil capacity 6 qts
5.7 L
Oil type

32oF [0oC]^ : SAE140
32oF [0oC]v : SAE90

Allis Chalmers B Dimensions

Wheelbase 73.4 inches
186 cm
Length 110.25 inches
280 cm
Width 52.7 inches (minimum)
133 cm
  62 inches (maximum)
157 cm
Height (exhaust) 76.75 inches
194 cm
Shipping weight 2060 lbs
934 kg
Ballasted weight 4193 lbs
1901 kg
Ground clearance 21.75 inches
55 cm
  28 inches (Asparagus Special)
71 cm
Front tread 42 inches
106 cm
Front tread 38 to 60 inches
96 to 152 cm
Rear tread 40 to 52 inches
101 to 132 cm
Rear tread 40 to 60 inches
101 to 152 cm

Allis Chalmers B Tests

Nebraska Tractor Test 302

Nebraska Tractor Test 302
116 ci gas 3-speed 2WD
May 31 – June 8, 1938
Link: Nebraska Tractor Test 302 file
Belt power (max) 15.68 hp
11.7 kW
Belt fuel use (max) 1.5 gal/hour
5.7 l/hour
Drawbar performance
Max power 12.97 hp
9.7 kW
Gear 2 used for power test.
Max pull 1,473 lbs
668 kg
Gear 2 used for pull test.

Nebraska Tractor Test 439

Nebraska Tractor Test 439
125 ci gas 3-speed 2WD
May 17 – 24, 1950
Link: Nebraska Tractor Test 439 file
Belt power (max) 22.25 hp
16.6 kW
Belt fuel use (max) 2.1 gal/hour
7.9 l/hour
Drawbar performance
Max power 19.51 hp
14.5 kW
Gear 2 used for power test.
Max pull 2,667 lbs
1209 kg
Gear 1 used for pull test.


Is Allis Chalmers B a good tractor?

The Allis Chalmers B is one of the great tractors in the Allis Chalmers stable, and it has earned Allis Chalmers a fantastic reputation.

How much oil does a Allis Chalmers B take?

Check out the Allis Chalmers B oil capacity and oil type in the engine specs section as it may vary across the engines. Keep in mind, that older models might have their oil capacity increased over time. You may compare between the early and late oil capacity.

Do tractors have VIN numbers?

Every tractor has a VIN number. The number is usually engraved below the driver’s seat. Tractor manufacturers put the number in different places on the tractor body.

What was the last year Allis Chalmers made the ?

The Allis Chalmers B was an agricultural tractor model made from 1938 – 1957

How much does a Allis Chalmers B tractor weight?

Depending on the engine type, the Allis Chalmers B weight ranges from 2060 lbs
934 kg .

How much can a Allis Chalmers B Pull?

The max pulling capacity of the Allis Chalmers B tractors starts at 1,473 lbs
668 kg but may be slightly higher depending on the trim.

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