Farmall Hydro 100

The Farmall Hydro 100 is a tractor produced by Farmall. It is equipped with a 436 ci 7.1 L engine. The listed engine power is 104.17 hp 77.7 kW. Transmission: infinite forward and reverse (2-range). Operating weight: 12,130 lbs 5502 kg.

Engine Power

104.17 hp 77.7 kW

Fuel & Capacities

Diesel

Transmission

infinite forward and reverse (2-range)

Operating Weight

12,130 lbs 5502 kg

Overview

	66 SeriesRow-Crop tractor
66 Series
Row-Crop tractor

Series map: 966Hydro 100106691.0hp115.7hp*140.0hp**Estimated engine power for comparison only.

Note: the Farmall model Hydro 100 is the same as the International Harvester Hydro 100. The following data is from the Hydro 100 listing.

Production
Manufacturer	Farmall (a part of International Harvester)
Row-Crop tractor
Built in Rock Island, Illinois, USA
Original price was $21,700 in 1976

Farmall Hydro 100 Engine
International Harvester 7.1L 6-cyl diesel
Engine details ...

Farmall Hydro 100 Transmission
hydrostatic
Transmission details ...

Farmall Hydro 100 Power
Drawbar (claimed)	80 hp 59.7 kW
PTO (claimed)	104.17 hp 77.7 kW
Drawbar (tested)	78.31 hp 58.4 kW
PTO (tested)	104.17 hp 77.7 kW
Performance test details ...

Mechanical
Two-wheel drive
Power steering
Differential hydraulic dry disc brakes
Open operator station. Two-post ROPS and cab available.

Hydraulics
Type	open center
Pump flow	12 gpm 45.4 lpm

Tractor hitch
Rear Type	II
Control	lower-link draft sensing

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540/1000 (1.375)

Dimensions & Tires
Wheelbase	104.8 inches 266 cm
Weight	12,130 lbs 5502 kg
Front tire	10.00-16
Rear tire	18.4-34
Full dimensions and tires ...

Engine

Series map: 966Hydro 100106691.0hp115.7hp*140.0hp**Estimated engine power for comparison only.

Note: the Farmall model Hydro 100 is the same as the International Harvester Hydro 100. The following data is from the Hydro 100 listing.

Engine Detail — 436 ci / 7.1 L Diesel

Manufacturer	International Harvester
Fuel Type	Diesel
Configuration	6-cylinder, liquid-cooled
Displacement	436 ci 7.1 L
Bore/Stroke	4.30x5.00 inches 109 x 127 mm
Air cleaner	dual stage dry
Compression	15.8:1
Rated RPM	2400
Starter volts	12

Transmission

Series map: 966Hydro 100106691.0hp115.7hp*140.0hp**Estimated engine power for comparison only.

Note: the Farmall model Hydro 100 is the same as the International Harvester Hydro 100. The following data is from the Hydro 100 listing.

Transmission — infinite forward and reverse (2-range) hydrostatic

Manufacturer	International Harvester
Type	hydrostatic
Gears	infinite forward and reverse (2-range)

Dimensions

Series map: 966Hydro 100106691.0hp115.7hp*140.0hp**Estimated engine power for comparison only.

Note: the Farmall model Hydro 100 is the same as the International Harvester Hydro 100. The following data is from the Hydro 100 listing.

Farmall Hydro 100 Tires
Ag front	10.00-16
Ag rear	18.4-34

Dimensions
Wheelbase	104.8 inches 266 cm
Operating weight	12,130 lbs 5502 kg

Tests

Series map: 966Hydro 100106691.0hp115.7hp*140.0hp**Estimated engine power for comparison only.

Note: the Farmall model Hydro 100 is the same as the International Harvester Hydro 100. The following data is from the Hydro 100 listing.

Nebraska Tractor Test 1158
Diesel hydrostatic 2WD May 7 - 18, 1974 Link: Nebraska Tractor Test 1158 file
PTO performance
Power at rated engine speed	104.17 hp 77.7 kW
Fuel use	7.6 gal/hour 28.8 l/hour
Power at rated PTO speed	101.30 hp 75.5 kW
Fuel use	6.8 gal/hour 25.7 l/hour
Drawbar performance
Max power	78.31 hp 58.4 kW
Fuel use	7.6 gal/hour 28.8 l/hour
Gear 5.5 MPH used for power test.
Max pull	9,801 lbs 4445 kg
Gear 2.85 MPH used for pull test.

Photos

Farmall Hydro 100 tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Farmall Hydro 100 based on its 104.17 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm)	Heavy Duty	Heavy primary tillage; semi-mounted hitch recommended.
Rotary Cutter / MowerMowing & Clearing	10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼	Heavy Duty	Wide swath pasture and crop residue shredding.
Rotary TillerSeedbed Prep	90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机	Commercial / Field Scale	Deep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage	10 to 14 ft Tandem / Offset3.0 - 4.2 m 重型交错耙	Heavy Duty	Aggressive residue cutting in corn/cotton stubble.
Hay BalerHay & Forage	5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机	Heavy Duty	High density baling; requires minimum 85 PTO HP.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Farmall Hydro 100.

Estimated Continuous Field Runtime: 1.4 hrs

Approximately 1.4 hours of continuous field operation at ~75% rated power on a full tank (7.6 gal / 28.8 L).

Estimated 75% Load Fuel Burn~5.4 gal/hr (20.5 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours