Model M Crawler-Updated 10/04/22

Registry Insight- Model M Crawler

The Allis Chalmers Model M was introduced in 1932 and was powered by the same 300 cubic inch UMA engine as the Popular Model U Standard tractor. The Model M was regarded as the "light crawler" at just on 3 tons and had a standard 40 inch track gauge with the option of a 50 inch track gauge which was known as the WM. Just over 14,000 units were produced in the ten years of production.

Serial numbers can be found on the right side of the transmission case and below is a listing of serial number ranges to help identify your crawler.

1932-    1-41

1933-    42-401

1934-    402-841

1935-    842-1941

1936-    1942-3841

1937-    3842-7066

1938-    7067-8126

1939-    8127-9539

1940-    9540-11379

1941-    11380-12946

1942-    12947-14524



Below is the current register for known Model M's in Australia which currently totals 34 units. If you have a machine not listed here please get in touch with us for it to be added on. A registration form can be found here.

MODEL	YEAR	SERIAL NO	ENGINE NO	DEALER ID	STATE	CONDITION
M	1933	M0344			VIC
M	1936	M3001			QLD
M	1936	M3254
M	1936	M3262
M	1936	M3574			VIC	unrestored
M	1937	M5115
M	1937	M5428			NSW	unrestored
M	1937	M5604
M	1937	M6026
M	1937	M6692
M	1937	M6692
M	1937	M6783			WA	good
M	1937	M6802
M	1937	M6807
M	1937	M6847			SA
M	1937	M6879
M	1937	M6906
M	1937	M7052
M	1938	M7087
M	1939	M8238
M	1939	M8684			VIC	unrestored
M	1939	M8709			WA	Restored
M	1939	M9420
M	1937	MO45239			QLD
WM		WM02687			VIC
WM	1936	WM03243
WM	1936	WM03549			VIC	Restored
WM	1937	WM05400
WM	1938	WM07291
WM	1938	WM07480			VIC	unrestored
WM	1939	WM08525
WM		WM08777			VIC
WM	1939	WM09509			VIC
WM	1942	WM14002
M					TAS
M				Lanes- M192	VIC	unrestored
M	1933		UMA8286K		SA
M					VIC
M	1937		7656K		QLD	unrestored
M					QLD
M					QLD	unrestored
M					QLD	parts only
M	1936				SA	unrestored
WM	1937				SA	unrestored
M
M
M	1937