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Tractor · 1973Unverified

Farmall Hydro 100

Name: Farmall Hydro 100
Brand: Farmall

Farmall Hydro 100 — 66 Series · 104 hp. Reference specifications; pending source verification.

The Farmall Hydro 100 is a tractor model with a rated output of 104 hp, placing it in the middle of its class in terms of power. It was manufactured from 1973 to 1976. The tractor features a 6-cylinder diesel liquid-cooled engine and a hydrostatic transmission driving two-wheel drive. Its listed weight ranges from 11470 to 12130 pounds, suitable for tasks involving approximately 200–800 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

104 hp

Max power

58.4 kW

Weight

11470 to 12130 pounds

Catalogue coverage

Variants represented

Richest spec table

80 rows

Recorded power

104 hp

Recorded weight

5202 kg

Transmissions

hydrostatic

Production years

1973-1976

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerFarmall (a part of International Harvester)Reference

Row-Crop tractorReference

Built in Rock Island, Illinois, USAReference

Original price was $21,700 in 1976Reference

Two-wheel driveReference

Differential lockmechanical rearReference

Power steeringReference

Differential hydraulic dry disc brakesReference

Open operator station. Two-post ROPS and cab available.Reference

Engine

International Harvester 7.1L 6-cyl dieselReference

Drawbar (claimed)59.7 kWReference

Drawbar (tested)58.4 kWReference

International Harvester D-436Reference

dieselReference

6-cylinderReference

liquid-cooled inlineReference

Displacement7.1 LReference

Bore/Stroke109 x 127 mmReference

Air cleanerdual stage dryReference

Compression15.8:1Reference

Rated RPM2400Reference

Idle RPM900-2400Reference

Starter volts12Reference

Oil capacity13.2 LReference

Coolant capacity24.6 LReference

Power at rated engine speed77.7 kWReference

Max power58.4 kWReference

Transmission

hydrostaticReference

ManufacturerInternational HarvesterReference

TypehydrostaticReference

Gearsinfinite forward and reverse (2-range)Reference

Oil capacity102.2 LReference

PTO & Hydraulics

PTO (claimed)77.6 kWReference

PTO (tested)77.7 kWReference

Hydraulic system102.2 LReference

Typeopen centerReference

Capacity102.2 LReference

Rear valves2Reference

Pump flow45.4 lpmReference

Rear TypeIIReference

Controllower-link draft sensingReference

Rear PTOindependentReference

Rear PTO Type540/1000 (1.375)Reference

Engine RPM540@2100Reference

Engine RPM1000@2072Reference

Power at rated PTO speed75.5 kWReference

Capacities

Fuel159.0 LReference

Dimensions

Wheelbase266 cmReference

Weight11470 to 12130 poundsReference

Front tire10.00-16Reference

Rear tire18.4-34Reference

Ag front10.00-16Reference

Ag rear18.4-34Reference

Length426 cmReference

Width259 cmReference

Height (cab)289 cmReference

Height (exhaust)274 cmReference

Shipping weight5202 kgReference

Operating weight5502 kgReference

Clearance (drawbar)35 cmReference

Bar rear axle82 mmReference

Front tread152 to 213 cmReference

Rear tread167 to 289 cmReference

Rear tread167 to 325 cmReference

Hydro 100 Serial Numbers

Location:Serial number plate on the left side of the transmission housing.Reference

19737501Reference

19747727Reference

197510915Reference

197612434Reference

FAQ: How to read a serial number table.Reference

Electrical

Charging systemalternatorReference

Charging amps72Reference

Test results

Diesel hydrostatic 2WDMay 7 - 18, 1974Link: Nebraska Tractor Test 1158 fileReference

PTO performanceReference

Fuel use28.8 l/hourReference

Fuel use25.7 l/hourReference

Drawbar performanceReference

Gear 5.5 MPH used for power test.Reference

Max pull4445 kgReference

Gear 2.85 MPH used for pull test.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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