• WhichTractor size: Utility
  • No lab test on file
  • 1953–1956
  • 8,652 built

WhichTractor size, not the maker’s category

Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is

International Harvester DED (3) specs: hp, weight, years

IHC DD 99 three-cylinder diesel or INTERNATIONAL-HARVESTER DD-99 diesel. The manufacturer claimed 19.7 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

19.7 hp

14.7 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “McCormick DED 3”, 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
2,712 lb
3-point lift
1,102 lb
Hyd. flow
5.5 gpm
Top speed
12.9 mph

International Harvester DED (3) specs: key facts

  • The International Harvester DED (3) was built from 1953 to 1956.

  • The International Harvester DED (3) has a claimed engine power (gross or net not stated) of 14.7 kW (19.7 hp); it has no measured PTO figure.Source 2

  • The International Harvester DED (3) is two-wheel drive (2WD).Source 2

  • The International Harvester DED (3) has a IHC DD 99 engine, a 3-cylinder 1.63 L diesel unit.

  • The International Harvester DED (3) weighs 1,230 kg (2,712 lb) unladen.

  • The International Harvester DED (3) has a dependent rear PTO running at 531 rpm.Source 2

  • The three-point hitch of the International Harvester DED (3) lifts 500 kg (1,102 lb) at the lower-link ends.

  • The hydraulic pump of the International Harvester DED (3) delivers 21.0 L/min (5.5 gpm).

Source · Traktorenlexikon, “IHC DED 3”

Illustration of the 1953–1956 International Harvester DED (3), a 20 hp farm tractor, operator station not recorded — shown as an open platform, a drawing generated from its specification record
Illustration — not a photograph · operator station not recorded — shown as an open platform

How much horsepower does a DED (3) have?

The only figure for the DED (3) is 19.7 hp (14.7 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)
19.7 hp

Source · Traktorenlexikon, “McCormick DED 3”

What engine is in a DED (3)?

A DED (3) has an IHC DD 99, a 3-cylinder 1.63 L diesel engine. Diesel tractors have a INTERNATIONAL-HARVESTER DD-99.

Engine — DED (3) engine specifications
Make & modelIHC DD 99
Cylinders3, liquid-cooledSource 2
Displacement99.5 ci · 1.63 L
Max torque60 lb·ft · 81 N·m
Electrical system12 V

Source · Traktorenlexikon, “IHC DED 3”

How much will a DED (3) lift, and what is its hydraulic flow?

A DED (3) lifts 1,102 lb (500 kg) at the lower-link ends of its Category 1 three-point hitch.

Hydraulics & PTO — DED (3) hydraulics and PTO specifications
Pump flow5.5 gpm · 21.0 L/min
Hitch categoryCategory 1Source 2
Lift at ends1,102 lb · 500 kg
Rear PTODependent, transmission-driven, 531 rpmSource 2

Source · Traktorenlexikon, “IHC DED 3”

What transmission does a DED (3) have?

Transmission specifications for the DED (3) are below.

Transmission — DED (3) transmission specifications
ClutchSingle dry clutch from Fichtel & SachsSources disagreePedal-operated dry single-plate clutch (Traktorenlexikon, “McCormick DED 3”)
SteeringMechanical worm steeringSource 2Sources disagreeIndividual wheel steering (Traktorenlexikon, “IHC DED 3”)
Top speed12.9 mph · 20.7 km/h

Source · Traktorenlexikon, “IHC DED 3”

How much does a DED (3) weigh?

A DED (3) weighs 2,712 lb (1,230 kg) unladen.

Weights & dimensions — DED (3) weights and dimensions
Unladen weight2,712 lb · 1,230 kg
Wheelbase66.0 in · 1,676 mm
Length107.6 in · 2,732 mmSource 2
Width64.2 in · 1,630 mm
Height62.4 in · 1,585 mm
Ground clearance15.6 in · 395 mm
Front track49.2–80.7 in · 1,250–2,050 mm
Rear track49.2–74.8 in · 1,250–1,900 mmSource 2
Turning radius, braked8.7 ft · 2.65 m

Source · Traktorenlexikon, “IHC DED 3”

What oil does a DED (3) take, and how much?

A DED (3) engine takes 4.4 qt (4.2 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

DED (3) fluid capacities, grades and service intervals
SystemCapacity
Engine oil4.4 qt · 4.2 LSource: Traktorenlexikon, “IHC DED 3” · single source, not independently verified
Transmission25.4 qt · 24 LSource: Traktorenlexikon, “IHC DED 3” · single source, not independently verified
Hydraulic5.8 qt · 5.5 LSource: Traktorenlexikon, “IHC DED 3” · single source, not independently verified
Cooling system10.6 qt · 10 LSource: Traktorenlexikon, “IHC DED 3” · single source, not independently verified

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

Which tractors compare with a DED (3)?

Within 10% of its 18.8 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 DED (3)

Is a DED (3) two-wheel drive or four-wheel drive?

The International Harvester DED (3) is two-wheel drive (2WD).

What PTO does a DED (3) have?

A DED (3) has a dependent 531 rpm rear PTO.

What serial numbers does a DED (3) carry?

The source prints serial numbers NT 60.001 to NT 68.652. It also records 1 change by serial number. It does not say whether that is the tractor’s or the engine’s number, and we never work out a year from a serial number.

Sources and how this page was built

Compiled from Traktorenlexikon, “McCormick DED 3”; and Traktorenlexikon, “IHC DED 3”.

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: IHC DED 3 — CC BY-SA 4.0, WIKIBOOKS-TL-44137 · revision 1072220. Wikibooks contributors (Traktorenlexikon). Original document
  2. Traktorenlexikon: McCormick DED 3 — CC BY-SA 4.0, WIKIBOOKS-TL-41176 · revision 1022332. Wikibooks contributors (Traktorenlexikon). Original document