Allis-Chalmers Model U
Allis-Chalmers Model U sn ? of 1939 at Woolpit 09 - IMG 1287
A Allis Model U at the Woolpit Steam Rally 2009
Model history
Model introduced 1929
Model discontinued 1952
Model status Discontinued
No. produced Unknown
Engine Specification
Engine make Allis-Chalmers or Continental
Fuel type Gasoline
Power hp 20/31
Governed rpm {{{governedrpm}}}
Displacement cu in /(litre) 284 / 300 / 317 cu inches
No. of Cylinders 4
Bore in (mm) 4.25 / 4.375 / 4.5 inches
Stroke in (mm) all 5 inches
Cooling system Water
Naturally aspirated, Turbo or Supercharged NA
Transmission Details
Transmission type Manual
Gearbox make Allis-Chalmers
Forward 4
Reverse 1
Drive 2WD
General Data
Linkage Category None
Tyre Sizes (std/options)
Front 28x6 steel or 6.00x16 rubber
Rear 42x11 steel or 12.75x24 Rubber
Tractor Dimensions
Length (inches/metres) 118.5 inches (3000 mm)
Width (inches/meters) 63.1 inches (160 cm)
Height (inches/meters) 53.5 inches (135 cm)
Weight (nominal) lb/kg 4,600 lbs (2086 kg])
Other info
Factories USA
Plow rating Unknown
Nebraska Tests No. 170, & 237
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The allis Chalmers Model U was built by Allis-Chalmers from 1929 to 1952 in the USA.

Model History Edit

For Company history, see Allis-Chalmers.

Timeline Edit

Factory locations Edit

Specification Edit

See Infobox for basic details

Variations and Options Edit

Serial Numbers Information Edit

Serial Numbers and Year of Manufacture data[1]
Year Serial run Number Built Notes (Total built xyz).
1929 NO DATA YET First built
1953 Last built No.
- serial no Number built Notes

Preservation Edit

No information on any of these tractors in preservation is available.

(Do you know of any examples to list ?

List of Preserved Allis-Chalmers Model U tractors
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Make + Model No. Reg No.
(if known)
Serial No. Build-Date Engine-Type/Make Owner
(if known)
Photo Were seen/Featured in Other info
Fill in with your data ? sn if known year engine owner Image needed LHB

seen at misc
Model U WSL 686+ sn unknown  ? AC  ? Allis Chalmers model U -WSL686-P8100523 At Driffield Steam and Vintage Rally 2008
Model U HAX 607+ sn unknown  ? AC  ? Allis-Chalmers Model U - HAX 607 at Bromyard 08 - P7060174 At Bromyard Gala 2008
Model U RRF 106+ sn 19395 1949 AC  ? Image needed LHB

At Cheffins spring 2017 sale Sold at £2100 + C
Image needed LHB

Image needed LHB

Please add any tractor with known reg or serial no. with Photo if possible.
Create a page (link) for an individual tractor by linking the reg or serial number using reg number or serial number in the relevant column. Then once saved click the red link to start the new page and add info on that tractor.

Gallery Edit

See also Edit

Collection related info
  • Shows and Meets - events featuring tractors and other machinery
  • Clubs Listing - List of clubs including various tractor marques
  • Collections - list of private collections with tractors (add yours)
  • Museums - includes museums featuring tractors (please add missing ones)

References / Sources Edit

  1. No data yet

External Links Edit

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