Farmall 706

Last Updated: July 2024

Overview

The Farmall 706 is a versatile row-crop tractor, produced by International Harvester between 1963 and 1967. This tractor came in two variants, 2WD and optional 4WD, and was powered by a 6-cylinder International Caso gasoline engine with a displacement of 290.8 cubic inches, rated at 75.56 HP at 2300 rpm with a compression ratio of 7.5:1. It featured hydraulic power steering, dry disc hydraulically power actuated brakes operated by two foot pedals, and a selective gear fixed ratio transmission with partial range operator-controlled power shifting. The tractor had a maximum power output of 75.56 HP at rated engine speed, with a fuel consumption of 6.298 Gal/hr and fuel efficiency of 0.509 lb/hp.hr. The drawbar performance showed a maximum available power of 65.67 HP at 4270 lbs drawbar pull and 5.77 mph speed. The PTO power at 1000 rpm was 71.80 HP at 2071 rpm, with PTO speeds of 539 or 1014 rpm at 2100 engine rpm. The tractor had an operating weight of 8700 lb without ballast and 10230 lb with ballast. It had a wheelbase of 104.8 inches, with rear tread width ranging from 56 to 94 inches and front tread width from 50 to 74 inches. The tractor employed a Category II hitch and supported PTO speeds of 540 and 1000 rpm, making it compatible with a wide range of attachments.

Key Specifications

Category: Row Crop

Power Output: 75.56

Transmission: Selective gear fixed ratio with partial range operator-controlled power shifting

Drive Type: 2WD / 4WD (optional)

Operating Weight: 8700 (without ballast) / 10230 (with ballast)

Fuel Type: Regular gasoline, Octane No Motor 84.0, Research 92.2

Image Gallery

Farmall 706 Tractor

Farmall 706 vs. Similar Tractors

Power Output

Excellent

Greater than 99% of similar tractors.

Operating Weight

Below Average

Greater than 26% of similar tractors.

Technical Specifications

Engine

Manufacturer: International Harvester
Model: International Caso
Cooling Type: Liquid-cooled
Cylinder Orientation: Inline
Valve Configuration: -
Fuel Type: Regular gasoline, Octane No Motor 84.0, Research 92.2
Induction Type: Natural
Cylinders: 6
Displacement (ci): 290.8
Bore (in): 3.75
Stroke (in): 4.39
Rated RPM: 2300
Power Output (hp): 75.56

Transmission

Type: Selective gear fixed ratio with partial range operator-controlled power shifting
Forward Gears: 16 (Torque Amplifier)
Reverse Gears: 8 (Torque Amplifier)
Total Gears: -

Dimensions

Length (in): 157 (2WD) / 161 (4WD)
Width (in): 110
Height (in): 80 (2WD Steering Wheel) / 81.8 (4WD Steering Wheel)
Operating Weight (lb): 8700 (without ballast) / 10230 (with ballast)

Power Take-Off (PTO)

PTO Type: Independent
PTO Speed 1 (rpm): 540
PTO Speed 2 (rpm): 1000
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x2 2WD or 4x4 FWA 4WD (optional)
Drive Type: 2WD / 4WD (optional)
Steering Type: Hydraulic with power assist
Coolant Capacity (qts): 21.5 (282 engine) / Unknown (310 engine) / 20.5 (263 engine) / Unknown (291 engine)
Front Tire Diameter (in): 16 (2WD) / 24 (4WD)
Front Tire Width (in): 6.5 (2WD) / Unknown (4WD)
Rear Tire Diameter (in): 38
Rear Tire Width (in): 15.5
Front/Rear Rim Diameter (in): -
Tire Type: -
Manufacture - End Year: 1967
Hitch Type: IH Fast Hitch
Hitch Category: II
Hitch Position: Rear
Hitch Capacity (lb): -
Operator Station Type: Open operator station or Cab (optional)
Starter Type: Electric
Brake Type: Hydraulic dry double disc
Hydraulic System Type: Open center

Test Results

Nebraska Tractor Test Laboratory - Test Date: November 16 to November 28, 1966

Maximum Power and Fuel Consumption

Maximum Power (Rated Engine Speed - Two Hours): 75.56 HP at 2300 rpm
Fuel Consumption at Maximum Power: 6.298 Gal/hr with a fuel efficiency of 0.509 lb/hp.hr
Cooling Medium Temperature: 180°F

Drawbar Performance

Maximum Power with Ballast (10th Gear): 65.67 HP
Drawbar Pull: 4270 lbs
Speed: 5.77 mph
Fuel Consumption at Maximum Power: 6.322 Gal/hr with a fuel efficiency of 0.595 lb/hp.hr

Engine Details

Engine Model: International Caso
Type: 6 cylinder vertical
Displacement: 290.8 cubic inches
Rated RPM: 2300 rpm
Compression Ratio: 7.5 to 1

Tire and Ballast Setup

Rear Tires: Two 15.5-38, 8 ply at 22 psi (with ballast)
Front Tires: Two 6.50-16, 6 ply at 40 psi
Ballast (Rear): 730 lb each
Total Weight with Ballast: 10,230 lb

Overall Dimensions

Wheelbase: 104.8 inches
Tread Width (rear): 56 to 94 inches
Tread Width (front): 50 to 74 inches
Height of Drawbar: 18 inches

NTTL. (1966). Nebraska Tractor Test 957 for Farmall 706 Gasoline. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/1321