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Tractor · Unverified

Farmall 766

Name: Farmall 766
Brand: Farmall

Farmall 766 — 66 SeriesRow-Crop tractor · 80 hp. Reference specifications; pending source verification.

The Farmall 766 tractor is rated at approximately 80 hp, a mid-range power output for its class. It is equipped with a 6-cylinder diesel liquid-cooled engine and features two-wheel drive with a powershift transmission. The tractor has a listed operating weight of 4672 kg and is suitable for operations up to 200 acres.

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

Rated power

80 hp

Max power

53.2 kW

Weight

4672 kg

Catalogue coverage

Variants represented

Richest spec table

87 rows

Recorded power

80 hp

Recorded weight

4672 kg

Transmissions

8-speed gear

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

Total built10,799Reference

Original price was $13,400 in 1976Reference

Two-wheel driveReference

Power steeringReference

Hydraulic dry disc brakesReference

Open operator station. Cab optional.Reference

Engine

International Harvester 4.8L 6-cyl gasolineReference

International Harvester 5.9L 6-cyl dieselReference

Fuel tank140.0 LReference

Drawbar (tested)54.7 kWReference

International Harvester C291Reference

gasolineReference

6-cylinderReference

liquid-cooledReference

Displacement4.8 LReference

Bore/Stroke95 x 112 mmReference

Air cleanerdual stage dryReference

Rated RPM2400Reference

Starter volts12Reference

International Harvester D360Reference

dieselReference

Displacement5.9 LReference

Bore/Stroke98 x 129 mmReference

Compression17:1Reference

Power at rated engine speed59.5 kWReference

Max power53.2 kWReference

Power at rated engine speed63.7 kWReference

Max power54.7 kWReference

Transmission

8-speed gearReference

16-speed two-speed power shiftReference

TypegearReference

Gears8 forward and 4 reverseReference

Clutchdry discReference

Four gears (1-4) in low and high ranges.Reference

TransmissionTorque AmplifierReference

Typetwo-speed power shiftReference

Gears16 forward and 8 reverseReference

Four gears (1-4) in two ranges (low/high) with the Torque Amplifer (TA) power shift. The TA allows a shift-on-the-move between direct drive and a lower speed.Reference

PTO & Hydraulics

PTO (tested)63.7 kWReference

Typeopen centerReference

Pump flow45.4 lpmReference

Rear Type2Reference

Rear PTOindependentReference

Rear PTO Type540/1000Reference

Power at rated PTO speed55.2 kWReference

Power at rated PTO speed63.9 kWReference

Dimensions

Wheelbase266 cmReference

Weight4672 kgReference

Front tire9.5L-15Reference

Rear tire18.4-34Reference

Ag front9.5L-15Reference

Ag rear18.4-34Reference

Length419 cmReference

Width248 cmReference

Height (exhaust)266 cmReference

Operating weight4672 kgReference

Ballasted weight5388 kgReference

Clearance (drawbar)35 cmReference

Front tread152 to 213 cmReference

Rear tread142 to 254 cmReference

766 Serial Number Location

Left side of clutch housingReference

766 Serial Numbers

19717101Reference

19727416Reference

19739611Reference

197412378Reference

197514630Reference

197616840Reference

FAQ: How to read a serial number table.Reference

Test results

NTTL 1094: gasoline Torque Amplifier 2WDReference

NTTL 1117: diesel Torque Amplifier 2WDReference

Gasoline Torque Amplifier 2WD4/20/1972Link: Nebraska Tractor Test 1094 fileReference

PTO performanceReference

Fuel use26.9 l/hourReference

Fuel use23.8 l/hourReference

Drawbar performanceReference

Fuel use27.6 l/hourReference

Gear 1-Hi-TA used for power test.Reference

Max pull4010 kgReference

Gear 2-Lo-Direct used for pull test.Reference

Diesel Torque Amplifier 2WDNovember 10 - December 5, 1972Link: Nebraska Tractor Test 1117 fileReference

Fuel use23.5 l/hourReference

Fuel use22.0 l/hourReference

Fuel use23.1 l/hourReference

Max pull4189 kgReference

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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