Allis-Chalmers M Specs ( 1932-1942 )
Overview
The Allis-Chalmers Model M is a reliable agricultural crawler tractor built in Springfield, Illinois, featuring a robust gasoline engine and a low ground pressure of 4.8 psi for efficient field work. With over 14,000 units produced between 1932 and 1942, this 6,200-pound machine delivers a tested drawbar pull of up to 5,166 lbs, making it a capable workhorse for diverse farm operations.
Ideal Applications
Soft Soil Operations:
Utilizing 12-inch wide tracks with 1,353 square inches of ground contact, this crawler is ideal for working in loose or soft terrain where low 4.8 psi ground pressure is required to minimize compaction.
Heavy Tillage and Pulling:
The four-speed gear transmission and 5.2L engine provide a maximum pull of 5,166 lbs, allowing the tractor to handle demanding drawbar tasks and heavy agricultural implements.
Versatile Field Work:
Available in standard and wide (WM) variants with a 40-inch gauge, this tractor offers the flexibility to navigate different farm layouts while providing 35.43 maximum belt horsepower for stationary equipment.
Production
| Description | Agricultural Crawler tractor / Built in Springfield, Illinois, USA |
|---|---|
| Manufacturer | Allis Chalmers |
| Total built | 14,524 |
Engine
| Engine type | Allis Chalmers 4.9L 4-cyl gasoline / Allis Chalmers 5.2L 4-cyl gasoline |
|---|---|
| Fuel tank | 24 gal (90.8 L) |
| Air cleaner | oil bath / oil bath |
| Bore/Stroke | 4.375x5.00 inches (111 x 127 mm) / 4.50x5.00 inches (114 x 127 mm) |
| Compression | 4.2:1 (early) |
| Coolant capacity | 24 qts (22.7 L) |
| Description | Allis Chalmers / gasoline / 4-cylinder / liquid-cooled vertical I-head / Original engine used until 1936, SN 2941 / Allis Chalmers / gasoline / 4-cylinder / liquid-cooled vertical I-head / Used from 1936 on, SN 2942 |
| Displacement | 300.7 ci (4.9 L) / 318 ci (5.2 L) |
| Oil capacity | 10 qts (9.5 L) |
| Rated RPM | 1200 / 1200 |
| Starter volts | 6 |
| Engine type | Allis Chalmers 4.9L 4-cyl gasoline / Allis Chalmers 5.2L 4-cyl gasoline |
| Belt (claimed) | 32 hp (23.9 kW) |
| Belt (tested) | 35.43 hp (26.4 kW) |
| Drawbar (claimed) | 22 hp (16.4 kW) |
| Drawbar (tested) | 29.65 hp (22.1 kW) |
Transmission
| Clutch | Rockford dry plate |
|---|---|
| Gears | 4 forward and 1 reverse |
| Oil capacity | 12 qts (11.4 L) |
| Transmission type | 4-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive | crawler |
Dimensions & Tires
| Gauge | 40 inches (101 cm) |
|---|---|
| Height | 56 inches (142 cm) |
| Length | 101.3 inches (257 cm) |
| Weight | 6200 lbs (2812 kg) |
| Width | 57.25 inches (145 cm) |
Allis Chalmers M Tracks
| Area on ground | 1353 in² (0.9 m²) |
|---|---|
| Ground pressure | 4.8 psi (0.3 bar) |
| Length on ground | 56.4 inches (143 cm) |
| Width | 12 inches (30 cm) |
Dimensions & Tracks
| Description | 12-inch tracks |
|---|---|
| Weight | 6200 lbs (2812 kg) |
M Serial Numbers
| 1932 | 1 |
|---|---|
| 1933 | 42 |
| 1934 | 402 |
| 1935 | 842 |
| 1936 | 1942 |
| 1937 | 3842 |
| 1938 | 7067 |
| 1939 | 8127 |
| 1940 | 9540 |
| 1941 | 11380 |
| 1942 | 12947 |
| Description | FAQ: How to read a serial number table. |
| Location: | Right side of transmission case |
Nebraska Tractor Test 216
| Belt fuel use (max) | 3.6 gal/hour (13.6 l/hour) |
|---|---|
| Belt power (max) | 35.43 hp (26.4 kW) |
| Description | 4.9L gasoline 4-speed crawlerSeptember 23 - October 9, 1933Link: Nebraska Tractor Test 216 file / Drawbar performance / Gear 1 used for power test. / Gear 1 used for pull test. |
| Max power | 29.65 hp (22.1 kW) |
| Max pull | 5,166 lbs (2343 kg) |
Nebraska Tractor Test 239
| Belt fuel use (max) | 4.2 gal/hour (15.9 l/hour) |
|---|---|
| Belt power (max) | 35.05 hp (26.1 kW) |
| Description | Gasoline 4-speed crawlerAugust 1 - 9, 1935Link: Nebraska Tractor Test 239 file / Drawbar performance / Gear 2 used for power test. / Gear 1 used for pull test. |
| Max power | 28.66 hp (21.4 kW) |
| Max pull | 5,009 lbs (2272 kg) |
References
| Description | Build a Better Farm published in 1940, by Allis Chalmers |
|---|
Tractor Tests
| Description | NTTL 216: 4.9L gasoline 4-speed crawler / NTTL 239: gasoline 4-speed crawler |
|---|
Variants
| M | standard width |
|---|---|
| WM | wide |