Mccormick Deering WD-9
Built: 1940–1954 · Series: Zweite W-Baureihe
← Predecessor: WD-40
More machines from model year 1940
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
McCormick-Deering second W series – standard tractors W-6, W-9, WD-6 and WD-9: International four-cylinders with 27 to 37 kW, WD models with diesel engine, W models on kerosene or petrol
The second W series from McCormick-Deering comprises the standard tractors W-6, W-9, WD-6 and WD-9 from International Harvester, dating from the 1940s. The D suffix distinguishes the engine type: while the W-6 and W-9 ran on distillate, kerosene or petrol, the WD-6 and WD-9 were fitted with a diesel engine, as the register's fuel data also shows. All four models carry four-cylinder engines from International's own production and represent the last generation of classic standard tractors with a rigid front axle, before International Harvester increasingly turned to row-crop and later general-purpose designs.
Read on 3 more paragraphs
The register lists 4 versions with 27.2 to 36.8 kW (35 to 49 hp) from four-cylinders with 4,059 to 5,482 cm³ displacement. Unladen weights range from 2,191 to 2,654 kg, lengths from 3,159 to 3,410 mm, widths from 1,600 to 1,924 mm, and heights from 2,080 to 2,305 mm; rated speeds lie between 1,450 and 1,500 rpm.
As standard tractors with an equal track width, the W series targeted large farms with a high need for draft power in tillage, harvesting and belt work, while the row-crop Farmall tractors built alongside them served the cultivation of growing row crops. The diesel variants WD-6 and WD-9 marked the brand's shift towards more economical diesel engines.
On these historic tractors, the condition of the cylinder head and cooling system, the tightness of the respective fuel system – diesel on the WD models, kerosene or petrol on the W models – wear on steering and clutch, and the condition of sheet metal and paintwork all matter. Spare parts today come mainly from specialist vintage-tractor parts dealers.
Sources: SpecCodex register, model data: McCormick-Deering zweite W-Baureihe
Technical data
Engine
| Engine make | Internationalcorrect |
|---|---|
| Engine model | D-335correct |
| Fuel | dieselcorrect |
| Power | 47 hp (34.6 kW)correct |
| Rated speed | 1,500 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 5,482 cm³ (335 ci)correct |
| Bore | 111.76 mmcorrect |
| Bore | 4.4 in (111.8 mm)correct |
| Stroke | 139.7 mmcorrect |
| Stroke | 5.5 in (139.7 mm)correct |
| Compression ratio | 15.7correct |
| Naturally aspirated | naturally aspiratedcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,410 mmcorrect |
|---|---|
| Length | 134correct |
| Width | 1,924 mmcorrect |
| Width | 68correct |
| Height | 2,080 mmcorrect |
| Height | 66correct |
| Wheelbase | 2,108 mm (84 in)correct |
| Turning circle | 30correct |
| Unladen weight | 2,654 kg (6,015 lbs)correct |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 5 V/1 Rcorrect |
| Gearbox make | Internationalcorrect |
| Forward gears | 5correct |
| Reverse gears | 1correct |
| Front tyres | 7.50 x 18correct |
| Rear tyres | 14 x 34correct |
| Top speed | 26 km/hcorrect |
Working data
| Fuel tank capacity | 36correct |
|---|
Origin and approval
| Plant | Milwaukee Works, Milwaukee, Wisconsincorrect |
|---|---|
| Construction | semi-frame constructioncorrect |
Other data
| Drawbar output | 43correct |
|---|---|
| Linkage category | drawbarcorrect |
| List price when new | $1945 (1941), $3845 (1951)correct |
| Predecessor | WD-40correct |
| Successor | McCormick Super WD-9correct |
Where this model stands
Power-to-weight ratio: 13 kW/t (35 kW / 2.7 t)
Power class: Universal (40–100 hp)
Stronger than 31% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Mccormick Deering WD-9 have?
The Mccormick Deering WD-9 delivers 47 hp.
How much does the Mccormick Deering WD-9 weigh?
The unladen weight is 2,654 kg.
What engine does the Mccormick Deering WD-9 have?
4 cylinders, 5,482 cm³ displacement, Diesel.
How fast does the Mccormick Deering WD-9 go?
Top speed is 26 km/h.
What are the dimensions of the Mccormick Deering WD-9?
3,410 mm × 1,924 mm × 2,080 mm.
When was the Mccormick Deering WD-9 built?
Production years: 1940–1954.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 48 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data
Tractor in 3D section
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