Allis Chalmers B Tractor

Manufacturer	Allis Chalmers
Price	1,500(USD)
Model	B
Equipment Type	Row-Crop Tractors
Factory	West Allis, Wisconsin, USA

ENGINES OVERVIEW

The Allis Chalmers B features a compact design powered by 2.1L or 1.9L four-cylinder gasoline engines, providing agility and efficiency for small to medium agricultural tasks. Its lightweight structure offers advantages in mobility and ease of operation in tight spaces, although it may lack the power for heavier implements compared to larger tractor models. Ideal for small farms or hobbyist operations, it excels in tasks such as tilling, planting, or mowing while potentially facing challenges in prolonged heavy-duty use.

Description

Allis-Chalmers 2.1L 4-cyl gasoline Allis-Chalmers 1.9L 4-cyl gasoline Waukesha 1.9L 4-cyl gasoline

ENGINE DETAIL 1

The Allis Chalmers B tractor is powered by a robust 2.1L 4-cylinder gasoline engine, featuring a low compression ratio of 5.75:1, which may result in lower engine output but enhances reliability and longevity. The oil bath air cleaner provides better filtration in dusty conditions, though it may require more maintenance than dry filters. Additionally, the 6-volt starter system is simpler but may face challenges in cold starts compared to modern 12-volt systems, highlighting a potential area for upgrades.

Description	Allis-Chalmers CE gasoline 4-cylinder liquid-cooled Final engine, used from 1943 on, SN 64501
Displacemen	125.2ci / 2.1L
Bore/Strok	3.375x3.50inches / 86x 89mm
Air cleane	oil bath
Compressio	5.75:1
Rated RP	1500
Firing orde	1-2-4-3
Starter volt	6
Oil capacit	4qts / 3.8L
Sparkplu	Autolite AN 7/AC 45
Sparkplug ga	0.035inches / 0.889mm
Point ga	0.020inches / 0.508mm
Intake valve clearanc	0.010inches (hot) / 0.254mm
Exhaust valve clearanc	0.010inches (hot) / 0.254mm

ENGINE DETAIL 2

The Allis-Chalmers B tractor features a 1.9L, 4-cylinder I-head engine with a moderate compression ratio of 4.92:1, suitable for reliable, low-RPM performance at a rated speed of 1400 RPM. The bore and stroke dimensions (3.25 x 3.50 inches) indicate a slightly undersquare design, enhancing torque characteristics for field work. While the cooling system holds only 8 quarts, maintaining effective thermal management is critical for sustained operations, especially in warmer climates.

Description	Allis-Chalmers BE gasoline 4-cylinder liquid-cooled vertical I-head Second engine, used until 1943, SN 64500
Displacemen	116.1ci / 1.9L
Bore/Strok	3.25x3.50inches / 83x 89mm
Compressio	4.92:1
Rated RP	1400
Firing orde	1-2-4-3
Coolant capacit	8qts / 7.6L
Sparkplug ga	0.040inches / 1.016mm
Point ga	0.020inches / 0.508mm
Intake valve clearanc	0.010inches (hot) / 0.254mm
Exhaust valve clearanc	0.010inches (hot) / 0.254mm

ENGINE OIL

The Allis Chalmers B tractor features an oil capacity of 4 quarts (3.8 liters), which is important for optimal engine performance and longevity. Maintaining the correct oil level ensures proper lubrication, reducing wear on engine components, but be aware that its smaller size compared to modern tractors may necessitate more frequent oil changes. In scenarios of heavy usage or rigorous conditions, monitoring oil quality becomes crucial to prevent overheating and potential engine damage.

Oil capacit

4qts / 3.8L

ENGINE DETAIL 3

The Allis Chalmers B features a Waukesha gasoline engine with a displacement of 113 ci (1.9L) and a bore/stroke configuration of 3.00x4.00 inches (76x102 mm), making it suitable for light to medium agricultural tasks. With a rated RPM of 1400, it provides sufficient torque at lower speeds, which is advantageous for tasks requiring stable power without excessive wear. However, its vintage engine may pose challenges in terms of parts availability and fuel efficiency compared to modern tractors.

Description	Waukesha gasoline 4-cylinder liquid-cooled, Original engine, used in 1937 on the first 96 tractors built
Displacemen	113ci / 1.9L
Bore/Strok	3.00x4.00inches / 76x 102mm
Rated RP	1400

ALLIS CHALMERS B ENGINES

The Allis Chalmers B is powered by a 2.1L or 1.9L 4-cylinder gasoline engine, which offers reliable performance for light agricultural tasks. With a fuel tank capacity of 12 gallons (45.4 liters), it provides a decent operational range suitable for small to medium-sized farm applications. However, its limited power output may pose challenges in heavy-duty tasks, making it ideal for use in scenarios like gardening or light fieldwork.

Description	Allis-Chalmers 2.1L 4-cyl gasoline Allis-Chalmers 1.9L 4-cyl gasoline Waukesha 1.9L 4-cyl gasoline
Fuel tan	12gal / 45.4L

TRANSMISSION

The Allis Chalmers B features an unsynchronized transmission, providing 3 forward and 1 reverse gear option, which can pose challenges in smooth gear shifting, especially under load. The dry disc clutch allows for effective power transfer but may require more maintenance compared to wet clutches, particularly in dusty environments. With an oil capacity of 6 quarts and the recommendation of SAE 90 at cold temperatures (32°F), operators must ensure proper oil viscosity for effective lubrication and performance in lower temperatures.

Typ	unsynchronized gear
Gear	3 forward and 1 reverse
Clutc	dry disc
Oil capacit	6qts / 5.7L
32oF [0oC]	SAE90

ALLIS CHALMERS B TRANSMISSION

The Allis Chalmers B features a 3-speed unsynchronized transmission, which allows for straightforward gear selection but may result in challenges with shifting at higher RPMs due to lack of synchronization. This design is advantageous for simpler operation and reduced mechanical complexity, making it ideal for agricultural tasks that prioritize low-speed maneuverability. However, operators should be cautious during shifts to minimize wear and potential grinding of gears.

Description

3-speed unsynchronized gear

MECHANICAL

The Allis Chalmers B tractor features a two-wheel drive system, offering simplicity and ease of maintenance but potentially limiting traction in challenging terrains. Its differential mechanical contracting band brakes provide reliable stopping power, though they may require more frequent adjustments compared to modern hydraulic systems. The open operator station is conducive to better visibility and comfort, while the optional canvas cab offers basic weather protection, enhancing usability in varying conditions.

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

TRACTOR HITCH

Typ	Allis Snap Coupler

POWER TAKE-OFF (PTO)

Rear PT	transmission
Rear RP	560

ALLIS CHALMERS B TIRES

The Allis Chalmers B tractor features front tires sized 4.00-15, providing excellent maneuverability in tight spaces, while the rear tire options of 10-24 (Potato Special) and 7-28 / 8-38 (Asparagus Special) enhance its adaptability for different crop types. With the smaller, wider rear tires, the tractor excels in row crop applications, particularly for potatoes and asparagus, minimizing soil compaction. However, the limited power and capability may pose challenges for larger farming operations requiring higher horsepower or heavy-duty performance.

Ag fron	4.00-15
Ag rea	10-24/7-28 (Potato Special)/8-38 (Asparagus Special)

DIMENSIONS & TIRES

The Allis Chalmers B features a compact wheelbase of 73.4 inches, enhancing maneuverability in tight spaces, making it suitable for small farms or gardens. Weighing 2060 lbs, it offers stability while operating equipment, although its lighter frame may limit heavy-duty tasks. The tire specifications (front: 4.00-15; rear: 9-24) suggest a balanced load distribution, ideal for cultivating and basic plowing tasks, but may require modifications for specialized attachments.

Wheelbas	73.4inches / 186cm
Weigh	2060lbs / 934kg
Front tir	4.00-15
Rear tir	9-24

B SERIAL NUMBERS

193	11800
194	1282 (IB)
195	11120 (EB)
Fina	127461

B SERIAL LOCATION

Description

On top of transmission case, by shift lever. English-built models have an 'EB' serial number

BELT PULLEY

Diamete	8inches / 20cm
Widt	5.5inches / 13cm
RP	1053

ELECTRICAL

Groun	positive
Charging syste	generator
Charging amp	12
Battery volt	6

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