John Deere 8970

The John Deere 8970 is a tractor produced by John Deere. It is equipped with a 855 ci 14.0 L engine. The rated power output is 400 hp 298.3 kW. Transmission: Power Shift. Operating weight: 31879 to 33655 pounds.

Overview

	1993 - 1996 8070 SeriesFour-wheel Drive (4WD) tractor
1993 - 1996
8070 Series
Four-wheel Drive (4WD) tractor

Production
Manufacturer	John Deere
Four-wheel Drive (4WD) tractor
Built in Waterloo, Iowa, USA
Original price was $144,175 in 1993

John Deere 8970 Engine
Cummins 14.0L 6-cyl diesel
Engine details ...

John Deere 8970 Power
Engine (gross)	400 hp 298.3 kW
PTO (claimed)	339 hp 252.8 kW
Drawbar (tested)	313.92 hp 234.1 kW
PTO (tested)	354.45 hp 264.3 kW
Performance test details ...

Mechanical
Four-wheel drive
Final drives	inboard planetary
Articulated power steering
Hydraulic wet disc brakes
Sound-Gard cab standard.

Capacity
Fuel	220 gal 832.7 L
Hydraulic system	38 gal 143.8 L

Hydraulics
Type	closed center pressure compensated
Capacity	38 gal 143.8 L
Pressure	2530 psi 174.4 bar
Rear valves	3 to 5
Pump flow	44.8 gpm 169.6 lpm
SCV flow	33.3 gpm 126.0 lpm

Power Take-off (PTO)
Rear PTO	independent (optional)
Clutch	hydraulic wet disc
Rear PTO Type	1000 (1.75)

Dimensions & Tires
Wheelbase	134 inches 340 cm
Weight	31879 to 33655 pounds
Front tire	24.5R-32
Rear tire	24.5R-32
Full dimensions and tires ...

Electrical
Ground	negative
Batteries	3
Battery CCA	925
Battery volts	12

References
250- to 400-HP 70 Series Tractors published in 1995, by John Deere

Engine

Engine Detail — 855 ci / 14.0 L Diesel

Manufacturer	Cummins
Configuration	turbocharged aftercooled diesel, 6-cylinder, liquid-cooled
Displacement	855 ci 14.0 L
Bore/Stroke	5.50x6.00 inches 140 x 152 mm
Power (gross)	400 hp 298.3 kW
Air cleaner	dual paper elements with aspirator
Compression	14.0:1
Rated RPM	2100
Starter volts	12
Oil capacity	36 qts 34.1 L
Coolant capacity	72 qts 68.1 L

Transmission

Transmission options
12-speed partially synchronized
24-speed two-speed power shift
12-speed full power shift

Transmission — Syncro

Transmission	Syncro
Type	partially synchronized
Gears	12 forward and 3 reverse
Clutch	PermaClutch hydraulic wet disc
Three synchronized gears (1-3) in four ranges (A-D).

Transmission — PowrSync

Transmission	PowrSync
Type	two-speed power shift
Gears	24 forward and 6 reverse
Clutch	hydraulic wet disc
Six gears (1-6) in four ranges (A-D). Power shift between gear pairs 1/2, 3/4, and 5/6. Synchronized shifting between other gears and ranges.

Transmission — Power Shift

Transmission	Power Shift
Type	full power shift
Gears	12 forward and 2 reverse
Clutch	hydraulic wet disc

Dimensions

John Deere 8970 Tires
Ag front	24.5R-32
	30.5-32
	20.8R-38
	710/70R38
	20.8R-42
	18.4R-46
Ag rear	24.5R-32
	30.5-32
	20.8R-38
	710/70R38
	20.8R-42
	18.4R-46

Dimensions
Wheelbase	134 inches 340 cm
Length	268.9 inches 683 cm
Shipping weight	31,879 lbs 14460 kg
Operating weight	33,655 lbs 15265 kg
Front axle	4.331 by 128 inches 110 by 3251 mm
Rear axle	4.331 by 128 inches 110 by 3251 mm

Tests

OCED Tractor Test 1673
Diesel PowrSync 4WD October 26 - December 1, 1993 Link: OCED Tractor Test 1673 file
PTO performance
Power at rated engine speed	354.45 hp 264.3 kW
Fuel use	20.7 gal/hour 78.3 l/hour
Power at rated PTO speed	393.39 hp 293.4 kW
Fuel use	21.5 gal/hour 81.4 l/hour
Drawbar performance
Max power	313.92 hp 234.1 kW
Fuel use	20.1 gal/hour 76.1 l/hour
Max pull	34,302 lbs 15559 kg