Skip to content
An independent tractor reference
TractorStack.

Find your tractor.

Menu ☰

Years in Production / 1973–1976

Farmall

Hydro 70

Explore the specifications, hardware, and original references for the Farmall Hydro 70.

Farmall Hydro 70 tractor MD1 — Acroterion, CC BY-SA 4.0. Resized; converted to WebP. · Acroterion · CC BY-SA 4.0 commons.wikimedia.org source ↗

90hp

Source index power

2WD Only

Drive

1973–1976

Production years

Farmall

Manufacturer

Hydro 70 / 01

At a glance

Production

Row-Crop tractor

Built in Rock Island, Illinois, USA

Manufacturer
Farmall (a part of International Harvester)
Original Price
$14,200

Capacity

Gas Fuel
33 gal124.9 L
Diesel Fuel
31 gal117.3 L
Hydraulic System
20 gal75.7 L

Hydraulics

Type
open center
Capacity
20 gal75.7 L
Rear Valves
2 OptOptional
Pump Flow
6 gpm22.7 lpm

Hitch

Rear Type
II

Pto

Rear Pto
independent
Rear Type
540 (1.375)
Engine Rpm
540@1986

Serial Numbers

FAQ: How to read a serial number table.

1973
7501
1974
7570
1975
8681
1976
10094

Electrical

Charging System
alternator
Charging Amps
37

Mechanical

Two-wheel drive

Power steering

Differential dry disc brakes

Open operator station.

Hydro 70 / 02

Under the hood

Engine Detail (Option 1)

International Harvester C-291

gasoline

6-cylinder

liquid-cooled inine

Displacement
291 ci4.8 L
Bore Stroke
3.75x4.39 inches95 x 112 mm
Power Gross
90 hp67.1 kW
Air Cleaner
dual stage dry
Compression Ratio
7.5:1
Rated Rpm
2400
Idle Rpm
900-2400
Starter Volts
12
Oil Capacity
9 qts8.5 L
Coolant Capacity
21 qts19.9 L
Fuel Type
gasoline
Cylinders
6
Cooling
liquid-cooled inine

Engine Detail (Option 2)

International Harvester D-312

diesel

6-cylinder

liquid-cooled inline

Displacement
312 ci5.1 L
Bore Stroke
3.875x4.410 inches98 x 112 mm
Power Gross
90 hp67.1 kW
Air Cleaner
dual stage dry
Compression Ratio
17:1
Rated Rpm
2400
Idle Rpm
900-2400
Starter Volts
12
Oil Capacity
12 qts11.4 L
Coolant Capacity
21 qts19.9 L
Fuel Type
diesel
Cylinders
6
Cooling
liquid-cooled inline

Hydro 70 / 03

Gears & controls

Transmission

Transmission Type
hydrostatic
Gears
infinite forward and reverse2-range
Oil Capacity
80 qts75.7 L

Hydro 70 / 04

Size. Stance. Footprint.

Dimensions

Length
161 in408 cm
Width
87 in220 cm
Height
77 in195 cm
Wheelbase
103 in261 cm
Front tread
58 in147 cm
Rear tread
60 in152 cm

Dimensions And Tires

Wheelbase
103 inches261 cm
Weight
7450 to 8200 pounds
Front Tire
7.50-16
Rear Tire
15.5-38

Tires And Tracks

Front Ag
7.50-16
Rear Ag
15.5-38

Hydro 70 / 05

Tractor Photos

Farmall Hydro 70 tractor MD1 — Acroterion, CC BY-SA 4.0. Resized; converted to WebP. · Acroterion · CC BY-SA 4.0 commons.wikimedia.org source ↗

See it in action

Videos

Watch Farmall Hydro 70 videos from their original YouTube creators.

1975 International Harvester Film Hydro 70 Tractor Troubleshooting

Video by J and L Videos

Watch on YouTube ↗

Hydro 70 / 07

Tests (NTTL)

Nebraska Tractor Test 1154

Gasoline hydrostatic 2WDNovember 14 - December 3, 1973

PTO performance

Drawbar performance

Id
1154
Power At Rated Engine Speed
69.61 hp51.9 kW
Fuel Use
6.9 gal/hour26.1 l/hour
Fuel Use
5.8 gal/hour22.0 l/hour
Fuel Use
7.7 gal/hour29.1 l/hour
Power At Rated Pto Speed
64.10 hp47.8 kW
Max Power
53.86 hp40.2 kW
Max Pull
8,427 lbs3822 kg

Nebraska Tractor Test 1155

Diesel hydrostatic 2WDNovember 14 - December 3, 1973

PTO performance

Drawbar performance

Id
1155
Power At Rated Engine Speed
69.51 hp51.8 kW
Fuel Use
5.6 gal/hour21.2 l/hour
Fuel Use
5.3 gal/hour20.1 l/hour
Power At Rated Pto Speed
65.41 hp48.8 kW
Max Power
53.10 hp39.6 kW
Max Pull
8,310 lbs3769 kg

Farmall Hydro 70 · photo 1 / 1

Farmall Hydro 70 tractor MD1

Farmall Hydro 70 tractor MD1 — Acroterion, CC BY-SA 4.0. Resized; converted to WebP. · Acroterion · CC BY-SA 4.0 commons.wikimedia.org source ↗