Farmall 756

The Farmall 756 is a tractor produced by Farmall. It is equipped with a 291 ci 4.8 L engine. The rated power output is 76.56 hp 57.1 kW. Transmission: Torque Amplifier. Operating weight: 8,350 lbs 3787 kg.

Overview

	1967 - 1971 56 SeriesRow-Crop tractor
1967 - 1971
56 Series
Row-Crop tractor

Production
Manufacturer	Farmall (a part of International Harvester)
Row-Crop tractor
The Farmall 756 was not tested at Nebraska, the tests for the Farmall 706 were used.

Variants
IH 756	standard chassis
Farmall 756	row-crop chassis
756 Custom	economy model

Farmall 756 Power
Drawbar (claimed)	68 hp 50.7 kW
PTO (claimed)	76.5 hp 57.0 kW
Drawbar (tested)	67.46 hp 50.3 kW
PTO (tested)	76.56 hp 57.1 kW
Performance test details ...

Mechanical
Two- or four-wheel drive
Steering	hydrostatic power
Independent hydraulic disc brakes
Cab optional with heat and A/C

Tractor hitch
Rear Type	2
Type	IH Fast Hitch

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	1000
	540/1000
Engine RPM	540@2100
	1000@2100

Dimensions & Tires
Wheelbase	105 inches 266 cm
Weight	8,350 lbs 3787 kg
Front tire	6.50-16
Rear tire	15.5-38
Full dimensions and tires ...

Electrical
Charging system	alternator
Charging amps	55
Batteries	1 (gas/LPG)
	2 (diesel)
Battery volts	12 (gas/LPG)
	6 (diesel)
Battery AH	60 (gas/LPG)
	130 (diesel)

References
Farm Loaders published in 1970, by International Harvester
Spring 1968 Buyer's Guide published by International Harvester
Summer-Fall 1968 Buyer's Guide published by International Harvester
World Wide Farm Equipment Buyer's Guide published in 1968, by International Harvester*
Spring 1971 Buyer's Guide published by International Harvester
Farmall 756 and 856 Tractors published by International Harvester
Farmall 756 Tractor published by International Harvester
Farm Equipment Reference Catalog published in 1968, by International Harvester
Farm Equipment Reference Catalog published in 1970, by International Harvester
*Publication contains known errors.

Engine

Engine options
International Harvester 5.1L 6-cyl diesel
International Harvester 4.8L 6-cyl gasoline
International Harvester 4.8L 6-cyl LP gas

Engine Detail — 310 ci / 5.1 L Diesel

Manufacturer	International Harvester D-310
Fuel Type	Diesel
Configuration	6-cylinder, liquid-cooled
Displacement	310 ci 5.1 L
Bore/Stroke	3.875x4.375 inches 98 x 111 mm
Air cleaner	dual dry elements
Compression	16:1
Rated RPM	2300
Starter volts	12
Oil capacity	12 qts 11.4 L
Coolant capacity	23.5 qts 22.2 L

Engine Detail — 291 ci / 4.8 L Gasoline

Manufacturer	International Harvester C-291
Fuel Type	Gasoline
Configuration	6-cylinder, liquid-cooled
Displacement	291 ci 4.8 L
Bore/Stroke	3.75x4.39 inches 95 x 112 mm
Air cleaner	dual dry elements
Compression	7.6:1
Rated RPM	2300
Starter volts	12
Oil capacity	9 qts 8.5 L
Coolant capacity	20.5 qts 19.4 L

Engine Detail — 291 ci / 4.8 L LP Gas

Manufacturer	International Harvester C-291
Fuel Type	LP gas
Configuration	6-cylinder, liquid-cooled
Displacement	291 ci 4.8 L
Bore/Stroke	3.75x4.39 inches 95 x 112 mm
Air cleaner	dual dry elements
Compression	7.6:1
Rated RPM	2300
Starter volts	12
Oil capacity	9 qts 8.5 L
Coolant capacity	21 qts 19.9 L

Transmission

Transmission options
8-speed
16-speed two-speed power shift

Transmission — gear

Transmission	gear
Gears	8 forward and 4 reverse
Clutch	dry disc
Oil capacity	68 qts 64.4 L
Four gears each in high, low, and reverse ranges.
With 15.5-38 rear tires.

Transmission — Torque Amplifier

Transmission	Torque Amplifier
Type	two-speed power shift
Gears	16 forward and 8 reverse
Clutch	dry disc
Oil capacity	68 qts 64.4 L
The Torque Amplifier (TA) provides a power shift from direct drive (DD) to a lower speed for every gear and range.
With 15.5-38 rear tires.

Dimensions

Farmall 756 Tires
Ag front	6.50-16
Ag rear	15.5-38

Dimensions
Wheelbase	105 inches 266 cm
Length	164 inches 416 cm
Width	92 inches 233 cm
Height (steering wheel)	82 inches 208 cm
Shipping weight	8,350 lbs (diesel) 3787 kg

Tests

Tractor Tests
NTTL 955: 310 diesel Torque Amplifier 2WD
NTTL 956: 291 LP gas Torque Amplifier 2WD
NTTL 957: 291 gas Torque Amplifier 2WD

Nebraska Tractor Test 955
310 diesel Torque Amplifier 2WD November 14 - 28, 1966 Link: Nebraska Tractor Test 955 file
PTO performance
Power at rated engine speed	76.09 hp 56.7 kW
Fuel use	5.0 gal/hour 18.9 l/hour
Power at rated PTO speed	71.84 hp 53.6 kW
Fuel use	4.7 gal/hour 17.8 l/hour
Drawbar performance
Max power	67.46 hp 50.3 kW
Fuel use	5.0 gal/hour 18.9 l/hour
Gear 1-High-Direct used for power test.
Max pull	8,416 lbs 3817 kg
Gear 3-Low-TA used for pull test.

Nebraska Tractor Test 956
291 LP gas Torque Amplifier 2WD November 14 - 28, 1966 Link: Nebraska Tractor Test 956 file
PTO performance
Power at rated engine speed	76.3 hp 56.9 kW
Fuel use	8.4 gal/hour 31.8 l/hour
Power at rated PTO speed	70.98 hp 52.9 kW
Fuel use	7.6 gal/hour 28.8 l/hour
Drawbar performance
Max power	66.53 hp 49.6 kW
Fuel use	8.3 gal/hour 31.4 l/hour
Gear 1-High-Direct used for power test.
Max pull	8,387 lbs 3804 kg
Gear 3-Lo-TA used for pull test.

Nebraska Tractor Test 957
291 gas Torque Amplifier 2WD November 16 - 28, 1966 Link: Nebraska Tractor Test 957 file
PTO performance
Power at rated engine speed	76.56 hp 57.1 kW
Fuel use	6.3 gal/hour 23.8 l/hour
Power at rated PTO speed	71.8 hp 53.5 kW
Fuel use	5.8 gal/hour 22.0 l/hour
Drawbar performance
Max power	65.67 hp 49.0 kW
Fuel use	6.3 gal/hour 23.8 l/hour
Gear 1-High-DD used for power test.
Max pull	8,387 lbs 3804 kg
Gear 3-Low-TA used for pull test.

Photos

Farmall 756

Farmall 756.

Farmall 756.