| Manufacturer |
Allis Chalmers |
| Price |
14,524(USD) |
| Model |
M |
| Equipment Type |
Agricultural Crawler Tractors |
| Factory |
Springfield, Illinois, USA |
VARIANTS
NEBRASKA TRACTOR TEST 216 2
| Description |
4.9L gasoline 4-speed crawler September 23 - October 9, 1933 Link: Nebraska Tractor Test 216 file Drawbar performance Gear 1 used for power test. Gear 1 used for pull test |
| Belt power (max) |
35.43hp / 26.4kW |
| Belt fuel use (max) |
3.6gal/hour / 13.6l/hour |
| Max power |
29.65hp / 22.1kW |
| Max pull |
5,166lbs / 2343kg |
NEBRASKA TRACTOR TEST 239 2
| Description |
Gasoline 4-speed crawler August 1 - 9, 1935 Link: Nebraska Tractor Test 239 file Drawbar performance Gear 2 used for power test. Gear 1 used for pull test |
| Belt power (max) |
35.05hp / 26.1kW |
| Belt fuel use (max) |
4.2gal/hour / 15.9l/hour |
| Max power |
28.66hp / 21.4kW |
| Max pull |
5,009lbs / 2272kg |
ALLIS CHALMERS M POWER
| Drawbar (claimed) |
22hp / 16.4kW |
| Belt (claimed) |
32hp / 23.9kW |
| Drawbar (tested) |
29.65hp / 22.1kW |
| Belt (tested) |
35.43hp / 26.4kW |
ENGINES OVERVIEW
The Allis Chalmers M tractor features either a 4.9L or 5.2L 4-cylinder gasoline engine, offering adequate power for various agricultural applications. The key advantages include a relatively simple mechanical design, facilitating ease of maintenance, and good fuel efficiency for smaller farming tasks. However, potential challenges include limited power output for larger implements due to its lower horsepower compared to modern tractors; thus, It's best suited for light to moderate-duty operations like gardening or small-scale farming.
| Description |
Allis Chalmers 4.9L 4-cyl gasoline Allis Chalmers 5.2L 4-cyl gasoline |
ENGINE DETAIL 1
The Allis Chalmers M tractor features a durable 4-cylinder I-head engine with a displacement of 300.7 ci, providing sufficient torque at a low RPM of 1200, ideal for agricultural applications requiring steady power. Its 4.2:1 compression ratio (4.7:1 in later models) indicates it's suited for lower-grade fuels but may lack efficiency compared to more modern engines with higher ratios. The oil bath air cleaner offers effective filtration, though maintenance can be challenging, especially in dusty conditions, making the tractor less suitable for extensive off-road use without regular upkeep.
| Description |
Allis Chalmers gasoline 4-cylinder liquid-cooled vertical I-head Original engine used until 1936, SN 2941 |
| Displacement |
300.7ci / 4.9L |
| Bore/Stroke |
4.375x5.00inches / 111x 127 mm |
| Air cleaner |
oil bath |
| Compression |
4.2:1 (early)/4.7:1 (late) |
| Rated RPM |
1200 |
| Starter volts |
6 |
| Oil capacity |
10qts / 9.5L |
| Coolant capacity |
24qts / 22.7L |
ENGINE DETAIL 2
The Allis Chalmers M tractor features a 5.2L, gasoline-powered, 4-cylinder I-head engine, known for its reliability and moderate torque output at lower RPMs (1200), making it suitable for various agricultural tasks and light-duty works. The oil bath air cleaner enhances the engine's longevity by minimizing dust ingress, although it may require more maintenance compared to dry systems. With a bore and stroke of 4.50x5.00 inches, the engine configuration provides a good balance of power and fuel efficiency, making it a dependable choice for vintage farming equipment.
| Description |
Allis Chalmers gasoline 4-cylinder liquid-cooled vertical I-head Used from 1936 on, SN 2942 |
| Displacement |
318ci / 5.2L |
| Bore/Stroke |
4.50x5.00inches / 114x 127 mm |
| Air cleaner |
oil bath |
| Rated RPM |
1200 |
ALLIS CHALMERS M ENGINES
The Allis Chalmers M tractor, equipped with a 4.9L or 5.2L 4-cylinder gasoline engine, provides a balance between power and fuel efficiency, making it suitable for small to medium farming tasks. The 24-gallon fuel tank offers extended operation time, reducing downtime for refueling during demanding agricultural tasks. However, its performance may vary under heavier loads or challenging terrain, necessitating careful consideration of workload and operational conditions to optimize its capabilities.
| Description |
Allis Chalmers 4.9L 4-cyl gasoline Allis Chalmers 5.2L 4-cyl gasoline |
| Fuel tank |
24gal / 90.8L |
TRANSMISSION
The Allis Chalmers M tractor features a basic 4-speed forward and 1-speed reverse transmission, which provides adequate versatility for light agricultural tasks. The Rockford dry plate clutch offers durability but may require more maintenance than hydraulic alternatives, especially in heavy-duty applications. With an oil capacity of 12 quarts, it ensures sufficient lubrication; however, regular oil changes are crucial to maintain optimal performance and prevent wear in the gearing system.
| Type |
gear |
| Gears |
4 forward and 1 reverse |
| Clutch |
Rockford dry plate |
| Oil capacity |
12qts / 11.4L |
MECHANICAL
The Allis Chalmers M features a crawler chassis, providing superior traction and stability on uneven terrain, making it ideal for agricultural tasks in challenging soil conditions. Its open operator station offers enhanced visibility and ease of access but may expose the operator to weather elements, which could be a disadvantage in adverse conditions. The 4-speed gear transmission allows for versatile speed control, though it may limit operational efficiency compared to modern hydrostatic transmissions in larger agricultural settings.
| Chassis |
crawler |
| Cab |
Open operator station |
| Transmission |
4-speed gear |
DIMENSIONS
| Length |
101.3inches / 257cm |
| Width |
57.25inches / 145cm |
| Height |
56inches / 142cm |
| Weight |
6200lbs / 2812kg |
| Gauge |
40inches / 101cm |
DIMENSIONS & TRACKS
| Weight |
6200lbs / 2812kg |
| Description |
tracks |
M SERIAL NUMBERS
| Location |
Right side of transmission case |
| 1932 |
1 |
| 1933 |
42 |
| 1934 |
402 |
| 1935 |
842 |
| 1936 |
1942 |
| 1937 |
3842 |
| 1938 |
7067 |
| 1939 |
8127 |
| 1940 |
9540 |
| 1941 |
11380 |
| 1942 |
12947 |
