WhichTractor
  • Rigid chassis
  • WhichTractor size: Standard-size
  • No lab test on file
  • 1976–1981
  • 4,000 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 Hydro 186 specs: hp, weight, years

INTERNATIONAL HARVESTER D-436 six-cylinder diesel. The manufacturer claimed 105 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

105 hp

78 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “IHC Hydro 186”, 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
13,135 lb
3-point lift
5,853 lb
Hyd. flow
12.0 gpm
Top speed
18.6 mph

International Harvester Hydro 186 specs: key facts

  • The International Harvester Hydro 186 was built from 1976 to 1981.

  • The International Harvester Hydro 186 has a claimed engine power (gross or net not stated) of 78 kW (105 hp); it has no measured PTO figure.

  • The International Harvester Hydro 186 is two-wheel drive (2WD).

  • The International Harvester Hydro 186 has a INTERNATIONAL HARVESTER D-436 engine, a 6-cylinder 7.14 L diesel unit.Source 1

  • The International Harvester Hydro 186 weighs 5,958 kg (13,135 lb) unladen.

  • The International Harvester Hydro 186 has a rear PTO running at 540/1000 rpm.

  • The three-point hitch of the International Harvester Hydro 186 lifts 2,655 kg (5,853 lb) at the lower-link ends.

  • The hydraulic pump of the International Harvester Hydro 186 delivers 45.4 L/min (12.0 gpm).

Source · Traktorenlexikon, “IHC Hydro 186”

How does the Hydro 186 compare with its class?

  • Limitation:

    A three-point lift at the lower links of 2,655 kg is low for its class — 43% below the median of 4,620 kg across the 201 machines within 10% of its power that hold this figure.

  • Worth knowing:

    An unladen mass of 5,958 kg is high for its class — 31% above the median of 4,546 kg across the 304 machines within 10% of its power that hold this figure.

Derived by WhichTractor from 304 comparable records. How we work this out

Illustration of the 1976–1981 International Harvester Hydro 186, a 105 hp farm tractor, a drawing generated from its specification record
Illustration — not a photograph

How much horsepower does a Hydro 186 have?

The only figure for the Hydro 186 is 105 hp (78 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)
105 hp

Source · Traktorenlexikon, “IHC Hydro 186”

What engine is in a Hydro 186?

A Hydro 186 has an INTERNATIONAL HARVESTER D-436, a 6-cylinder 7.14 L diesel engine.

Engine — Hydro 186 engine specifications
Make & modelINTERNATIONAL HARVESTER D-436
Cylinders6, liquid-cooledSource 2
Displacement435.6 ci · 7.14 L
Max torque315 lb·ft · 427 N·m @ 1,700 rpmSource 2
Electrical system12 VSource 2

Source · Traktorenlexikon, “IHC Hydro 100”

How much will a Hydro 186 lift, and what is its hydraulic flow?

A Hydro 186 lifts 5,853 lb (2,655 kg) at the lower-link ends of its Category 2 three-point hitch.

Hydraulics & PTO — Hydro 186 hydraulics and PTO specifications
Pump flow12.0 gpm · 45.4 L/min
Hitch categoryCategory 2
Lift at ends5,853 lb · 2,655 kg
Rear PTO540/1000 rpm @ 2,106 engine rpm
PTO shaft1 3/8"- 6 splines or 1 3/4"- 20 parts

Source · Traktorenlexikon, “IHC Hydro 186”

What transmission does a Hydro 186 have?

Transmission specifications for the Hydro 186 are below.

Transmission — Hydro 186 transmission specifications
ClutchPedal-operated Dyna-Life clutch
Top speed18.6 mph · 30 km/h

Source · Traktorenlexikon, “IHC Hydro 186”

How much does a Hydro 186 weigh?

A Hydro 186 weighs 13,135 lb (5,958 kg) unladen.

Weights & dimensions — Hydro 186 weights and dimensions
Unladen weight13,135 lb · 5,958 kg
Wheelbase104.8 in · 2,662 mm
Length167.0 in · 4,242 mm
Width102.0 in · 2,591 mm
Height112.0 in · 2,845 mm
Ground clearance13.0 in · 330 mm
Front track60.0–84.0 in · 1,524–2,134 mm
Rear track62.0–118.0 in · 1,575–2,997 mm
Turning radius, braked11.7 ft · 3.58 m

Source · Traktorenlexikon, “IHC Hydro 186”

What oil does a Hydro 186 take, and how much?

A Hydro 186 engine takes 14.5 qt (13.7 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

Hydro 186 fluid capacities, grades and service intervals
SystemCapacity
Engine oil14.5 qt · 13.7 LSource: Traktorenlexikon, “IHC Hydro 186” · single source, not independently verified
Transmission & hydraulic114.0 qt · 107.9 LSource: Traktorenlexikon, “IHC Hydro 186” · single source, not independently verified
Cooling system26.0 qt · 24.6 LSource: Traktorenlexikon, “IHC Hydro 186” · single source, not independently verified

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

Which tractors compare with a Hydro 186?

Within 10% of its 100.3 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 Hydro 186

Is a Hydro 186 two-wheel drive or four-wheel drive?

The International Harvester Hydro 186 is two-wheel drive (2WD).

What PTO does a Hydro 186 have?

A Hydro 186 has a 540/1000 rpm rear PTO on a 1 3/8"- 6 splines or 1 3/4"- 20 parts shaft.

Sources and how this page was built

Compiled from Traktorenlexikon, “IHC Hydro 100”; and Traktorenlexikon, “IHC Hydro 186”.

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 Hydro 100 — CC BY-SA 4.0, WIKIBOOKS-TL-118878 · revision 1055562. Wikibooks contributors (Traktorenlexikon). Original document
  2. Traktorenlexikon: IHC Hydro 186 — CC BY-SA 4.0, WIKIBOOKS-TL-119106 · revision 1036810. Wikibooks contributors (Traktorenlexikon). Original document