Allis Chalmers 20-35 - Horsepower, Weight, Specs, Problems, Price & More

The Allis Chalmers 20-35 tractor is powered by a Allis Chalmers 7.6L 4-cyl gasoline engine that provides of horsepower and torque. It has a 4x2 2WD drive configuration and a unsynchronized gear transmission.

• Engine
• Transmission
• Brakes
• Steering
• Common Problems
• What Users Like
• Technical Specifications

Engine

The engine is not specified in the data provided. However, based on the model name 'Allis Chalmers 20-35', it can be assumed that the engine is a 4-cylinder gasoline engine with a displacement of around 7.6 liters. The engine is likely liquid-cooled and has a vertical valve-in-head design. It probably has an oil bath air cleaner and a rated RPM of around 930. The coolant capacity is likely around 40 quarts or 37.9 liters.

Transmission

The transmission of the Allis Chalmers 20-35 tractor is a 2-speed unsynchronized gear type. The drawbar horsepower of the tractor is claimed to be 20 hp or 14.9 kW, while the belt horsepower is claimed to be 35 hp or 26.1 kW. In testing, the drawbar horsepower was found to be 33.20 hp or 24.8 kW, and the belt horsepower was found to be 44.29 hp or 33.0 kW. The transmission has a hand-operated expanding shoe clutch.

Brakes

The brakes of the Allis Chalmers 20-35 tractor are not specified in the data provided. However, based on the model name, it can be assumed that the tractor has mechanical drum brakes. The brakes are likely operated by foot pedals and are located on the rear wheels. The brake system is probably a simple hydraulic system with a master cylinder and wheel cylinders. The brake fluid capacity is likely around 1-2 quarts or liters.

Steering

The steering of the Allis Chalmers 20-35 tractor is manual. The steering system is likely a simple mechanical system with a steering wheel, pitman arm, and drag link. The steering box is probably located on the front axle and is lubricated with grease. The fuel tank of the tractor has a capacity of 25 gallons or 94.6 liters, while the auxiliary fuel tank has a capacity of 7.75 gallons or 29.3 liters.

Common Problems

Users of the Allis Chalmers 20-35 tractor have reported several common problems. One of the biggest issues is with the chassis, which is a 4x2 2WD design. This can make the tractor less stable and more prone to getting stuck in soft or uneven terrain. Another common problem is with the manual steering system, which can be difficult to operate and can cause fatigue for the operator. The open operator station cab can also be a problem in inclement weather, as it provides little protection from the elements. Finally, the 2-speed unsynchronized gear transmission can be difficult to shift and can cause the tractor to stall or jerk when changing gears.

What Users Like

Despite the common problems, users of the Allis Chalmers 20-35 tractor appreciate several features of the machine. One of the most popular aspects is the 36x6 steel front and 50x12 steel rear agricultural tires, which provide excellent traction and stability in the field. The tractor is also known for its powerful engine, which can provide plenty of torque and horsepower for heavy-duty tasks. Finally, users appreciate the simplicity and reliability of the tractor's design, which makes it easy to maintain and repair in the field.

Allis Chalmers 20-35 Technical Specifications

Power
Drawbar (claimed)	20 hp/14.9 kW
Belt (claimed)	35 hp/26.1 kW
Drawbar (tested)	33.20 hp/24.8 kW
Belt (tested)	44.29 hp/33.0 kW
Engine Detail
Description	Allis Chalmers/gasoline/4-cylinder/liquid-cooled vertical valve-in-head
Displacement	460.7 ci/7.6 L
Bore/stroke	4.75x6.50 inches/121 x 165 mm
Fuel System	Kingston L 1.5
Air Cleaner	oil bath
Rated Rpm	930
Coolant Capacity	40 qts/37.9 L
Engine
Description	Allis Chalmers 7.6L 4-cyl gasoline
Fuel Tank	25 gal/94.6 L
Aux. Fuel	7.75 gal/29.3 L
Transmission
Type	unsynchronized gear
Gears	2 forward and 1 reverse
Clutch	hand-operated expanding shoe
Mechanical
Chassis	4x2 2WD
Steering	manual
Cab	Open operator station.
Transmission	2-speed unsynchronized gear
Tires
Ag Front	36x6 steel
Ag Rear	50x12 steel
Dimensions
Length	135 inches/342 cm
Width	66 inches/167 cm
Height	68 inches/172 cm
Weight	6640 lbs/3011 kg
Dimensions And Tires
Weight	6640 lbs/3011 kg
Front Tire	36x6
Rear Tire	50x12
Serial Numbers
Location	Serial number on a plate in front of the steering wheel until 1927. After, the serial number is front of shifter on transmission case.
1923	6161
1924	6397
1925	6755
1926	7369
1927	8070
1928	9870
1929	16762
1930	23252
Final	24185
Description	/how to read serial numbers.../
Belt Pulley
Diameter	13 inches/33 cm
Width	8.5 inches/21 cm
Rpm	930

Other Allis Chalmers tractors:

Allis Chalmers 10-18, Allis Chalmers 160, Allis Chalmers 170, Allis Chalmers 175, Allis Chalmers 18-30, Allis Chalmers 180, Allis Chalmers 185, Allis Chalmers 190, Allis Chalmers 190XT, Allis Chalmers 20-35, Allis Chalmers 200, Allis Chalmers 210, Allis Chalmers 220, Allis Chalmers 25-40, Allis Chalmers 440, Allis Chalmers 4W-220, Allis Chalmers 4W-305, Allis Chalmers 5020, Allis Chalmers 5030, Allis Chalmers 5040, Allis Chalmers 5045, Allis Chalmers 5050, Allis Chalmers 6-12, Allis Chalmers 6040, Allis Chalmers 6060, Allis Chalmers 6070, Allis Chalmers 6080, Allis Chalmers 6140, Allis Chalmers 616, Allis Chalmers 620, Allis Chalmers 7000, Allis Chalmers 7010, Allis Chalmers 7020, Allis Chalmers 7030, Allis Chalmers 7040, Allis Chalmers 7045, Allis Chalmers 7050, Allis Chalmers 7060, Allis Chalmers 7080, Allis Chalmers 720, Allis Chalmers 7580, Allis Chalmers 8010, Allis Chalmers 8030, Allis Chalmers 8050, Allis Chalmers 8070, Allis Chalmers A, Allis Chalmers B, Allis Chalmers C, Allis Chalmers CA, Allis Chalmers D10, Allis Chalmers D12, Allis Chalmers D14, Allis Chalmers D15, Allis Chalmers D19, Allis Chalmers D270, Allis Chalmers E 30-60, Allis Chalmers FD3, Allis Chalmers FD5, Allis Chalmers G, Allis Chalmers HD11, Allis Chalmers HD16A, Allis Chalmers HD20, Allis Chalmers HD3, Allis Chalmers HD6, Allis Chalmers HD9, Allis Chalmers T16, Allis Chalmers UC, Allis Chalmers WF,