Allis-Chalmers M crawler
Allis Chalmers type M crawler GDSF
A Type M with trailed plough in the working area at the GDSF 2008
Model history
Model introduced 1932
Model discontinued 1942
Model status Discontinued
Engine Specification
Fuel type Distillate
Power hp 38
Power kW 28
Displacement cu in /(litre) 318 cu inch
No. of Cylinders 4
Bore in (mm) 4.375 inch(> 1936)
4.5 inch
Stroke in (mm) 5 inch
Cooling system water
Transmission Details
Transmission type Unknown
Drive crawler
Linkage Category Unknown
Other info
Factories USA
Plow rating Unknown
Nebraska Tests No. 239
Approximate Cost new in (year) £440 (UK 1939)
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The Allis-Chalmers Model M crawler tractor was built in the USA by Allis-Chalmers from 1932 to 1942. It featured a 38 hp (28 kW) engine.

Model historyEdit

For brand history, see Allis-Chalmers_Manufacturing_Company.


Offered in Std 40 inch track gauge and the 50 inch (usually called a Model WM)

  • Engine bore increased a sn M2942 from 4.375 to 4.5 inch
  • Late models used sealed bearings from sn 8342
  • Electric start
  • Lighting kit
  • Fenders
  • PTO
  • Front draw hook
  • Radiator guard & sump guard
  • Side panels
  • Belt pully
  • Some Military machines had a winch fitted

Serial numbers Edit

It is belived 14,524 were built.[1]


A Number of examples exist in the UK and the USA


See alsoEdit


External linksEdit

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