• Vehicle type: unspecified
  • Rigid chassis
  • WhichTractor size: Standard-size
  • No lab test on file
  • 1940–1954

It sits on the standard-size/high-power boundary, so either size is a fair description. WhichTractor size, not the maker’s category

We looked and the record does not say what this machine is. How we decide what a machine is

International Harvester WD-9 specs: hp, weight, years

INTERNATIONAL HARVESTER D-335 four-cylinder diesel. The manufacturer claimed 46.4 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

46.4 hp

34.6 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “McCormick WD-9”, claimed

This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.

Weight
5,851 lb
Top speed
16.2 mph

International Harvester WD-9 specs: key facts

  • The International Harvester WD-9 was built from 1940 to 1954.

  • The International Harvester WD-9 has a claimed engine power (gross or net not stated) of 34.6 kW (46.4 hp); it has no measured PTO figure.

  • The International Harvester WD-9 is two-wheel drive (2WD).

  • The International Harvester WD-9 has a INTERNATIONAL HARVESTER D-335 engine, a 4-cylinder 5.48 L diesel unit.

  • The International Harvester WD-9 weighs 2,654 kg (5,851 lb) unladen.

  • The International Harvester WD-9 has a rear PTO running at 538 rpm.

Source · Traktorenlexikon, “McCormick WD-9”

How does the WD-9 compare with its class?

  • Limitation:

    Five forward gears is low for its class — 38% below the median of 8 across the 281 machines within 10% of its power that hold this figure.

  • Strength:

    A 133 L fuel tank is high for its class — 141% above the median of 55 L across the 256 machines within 10% of its power that hold this figure.

Derived by WhichTractor from 285 comparable records. How we work this out

Illustration of the 1940–1954 International Harvester WD-9, a 46 hp farm tractor, a drawing generated from its specification record
Illustration — not a photograph

How much horsepower does a WD-9 have?

The only figure for the WD-9 is 46.4 hp (34.6 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.

Engine, claimed (gross/net not stated)
46.4 hp

Source · Traktorenlexikon, “McCormick WD-9”

What engine is in a WD-9?

A WD-9 has an INTERNATIONAL HARVESTER D-335, a 4-cylinder 5.48 L diesel engine.

Engine — WD-9 engine specifications
Make & modelINTERNATIONAL HARVESTER D-335
Cylinders4, liquid-cooled
Displacement334.5 ci · 5.48 L

Source · Traktorenlexikon, “McCormick WD-9”

How much will a WD-9 lift?

Hydraulic and PTO specifications for the WD-9 are below.

Hydraulics & PTO — WD-9 hydraulics and PTO specifications
Rear PTO538 rpm

Source · Traktorenlexikon, “McCormick WD-9”

What transmission does a WD-9 have?

Transmission specifications for the WD-9 are below.

Transmission — WD-9 transmission specifications
ClutchPedal operated dry ROCKFORD single plate clutch
BrakesPedal operated internal expanding shoe brakes mounted on the countershafts
SteeringMechanical worm steering
Top speed16.2 mph · 26 km/h

Source · Traktorenlexikon, “McCormick WD-9”

How much does a WD-9 weigh?

A WD-9 weighs 5,851 lb (2,654 kg) unladen.

Weights & dimensions — WD-9 weights and dimensions
Unladen weight5,851 lb · 2,654 kg
Wheelbase83.0 in · 2,108 mm
Length134.3 in · 3,410 mm
Width75.7 in · 1,924 mm
Height81.9 in · 2,080 mm
Front track52.2 in · 1,327 mm
Rear track53.0 in · 1,346 mm

Source · Traktorenlexikon, “McCormick WD-9”

What oil does a WD-9 take, and how much?

A WD-9 engine takes 9.0 qt (8.5 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

WD-9 fluid capacities, grades and service intervals
SystemCapacity
Engine oil9.0 qt · 8.5 LSource: Traktorenlexikon, “McCormick WD-9” · single source, not independently verified
Transmission52.0 qt · 49.2 LSource: Traktorenlexikon, “McCormick WD-9” · single source, not independently verified
Cooling system44.0 qt · 41.6 LSource: Traktorenlexikon, “McCormick WD-9” · single source, not independently verified

Always confirm against the operator’s manual for your machine before service.

Which tractors compare with a WD-9?

Within 10% of its 46.5 hp at the PTO as the maker claimed it, with no laboratory test on file, the same type, and first built within 15 years of it.

Common questions about the International Harvester WD-9

Is a WD-9 two-wheel drive or four-wheel drive?

The International Harvester WD-9 is two-wheel drive (2WD).

What PTO does a WD-9 have?

A WD-9 has a 538 rpm rear PTO.

Sources and how this page was built

Compiled from Traktorenlexikon, “McCormick WD-9”.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. Traktorenlexikon: McCormick WD-9 — CC BY-SA 4.0, WIKIBOOKS-TL-117804 · revision 1059907. Wikibooks contributors (Traktorenlexikon). Original document