John Deere 8440 tractor specifications

1979 - 1982

1979 - 1982 Iron Horses SeriesFour-wheel Drive (4WD) tractor

Series:

Series:8440 → 86408450 ↓

1979 - 1982

Iron Horses Series

Four-wheel Drive (4WD) tractor

Production

Production
Manufacturer:	John Deere
Type:	Four-wheel Drive (4WD) tractor
Factory:	Waterloo, Iowa, USA
Original price:	$80,000 (1982 )

John Deere 8640 Power

John Deere 8640 Power
Engine:	275 hp 205.1 kW
PTO (claimed):	225 hp 167.8 kW
Drawbar (tested):	203.34 hp 151.6 kW
PTO (tested):	228.75 hp 170.6 kW
power test details ...

John Deere 8640 Engine

John Deere 8640 Engine
John Deere 10.1L 6-cyl diesel
Engine details ...

Mechanical

Mechanical
Chassis:	4x4 articulated 4WD
Differential lock:	hydraulic front and rear
Steering:	articulated power
Brakes:	hydraulic wet disc
Cab:	Cab standard
Transmission:	16-speed partial power shift
Transmission details ...

Capacity

Capacity
Fuel:	214 gal 810.0 L
Hydraulic system:	41 gal 155.2 L

Hydraulics

Hydraulics
Type:	closed center
Capacity:	41 gal 155.2 L
Valves:	2
Pump flow:	33 gpm 124.9 lpm

Tractor hitch

Tractor hitch
Rear Type:	III/IIIN
Rear lift:	8545 lbs 3876 kg

Power Take-off (PTO)

Power Take-off (PTO)
Rear PTO:	independent
Rear RPM:	1000
Engine RPM:	1000@2100

Dimensions & Tires

Dimensions & Tires
Wheelbase:	125 inches 317 cm
Weight:	28,270 lbs 12823 kg
Front tire:	18.4-34
Rear tire:	18.4-34
Full dimensions and tires ...

8640 Serial Numbers

8640 Serial Numbers
Location:	On the tractor transmission case, rear.
photo of 8640 serial number
1979:	1500
1980:	3198
1981:	5704
1982:	7960
how to read serial numbers...

Electrical

Electrical
Ground:	negative
Charging system:	alternator
Charging amps:	90
Batteries:	2
Battery CCA:	975
Battery volts:	6

Production

Production Manufacturer:John Deere
Type:Four-wheel Drive (4WD) tractor
Factory:Waterloo, Iowa, USA
Original price:$64,000 (1982 )

John Deere 8440 Power

John Deere 8440 Power Engine:215 hp
160.3 kW
PTO (claimed):175 hp
130.5 kW
Drawbar (tested):160.58 hp
119.7 kW
PTO (tested):179.83 hp
134.1 kW
power test details ...

1979 - 1982

Iron Horses Series

Four-wheel Drive (4WD) tractor

Series:

Series:	8440	→ 8640
	8450 ↓

Nebraska Tractor Test 1323

Nebraska Tractor Test 1323
Diesel 16-speed 4WD September 10, 1979 - September 15, 1949 Link: Nebraska Tractor Test 1323 file
PTO performance
Power at rated engine speed:	179.83 hp 134.1 kW
Fuel use:	11.3 gal/hour 42.8 l/hour
Drawbar performance
Max power:	160.58 hp 119.7 kW
Fuel use:	11.2 gal/hour 42.4 l/hour
Max pull:	25,383 lbs 11513 kg

John Deere 8440 Engine

John Deere 8440 Engine John Deere 7.6L 6-cyl diesel Engine details ...

1979 - 1982

Iron Horses Series

Four-wheel Drive (4WD) tractor

Series:

Series:	8440	→ 8640
	8450 ↓

Engine Detail

Engine Detail
John Deere
turbocharged diesel
6-cylinder
liquid-cooled
Displacement:	466 ci 7.6 L
Bore/Stroke:	4.5625x4.75 inches 116 x 121 mm
Power:	215 hp 160.3 kW
Compression:	15.5:1
Rated RPM:	2100
Idle RPM:	800-2300
Operating RPM:	1500-2100
Firing order:	1-5-3-6-2-4
Starter volts:	12
Oil capacity:	22 qts 20.8 L
Coolant capacity:	40 qts 37.9 L

Mechanical

Mechanical Chassis:4x4 articulated 4WD
Differential lock:hydraulic front and rear
Steering:articulated power
Brakes:hydraulic wet disc
Cab:Cab standard.
Transmission:16-speed partial power shift
Transmission details ...

1979 - 1982

Iron Horses Series

Four-wheel Drive (4WD) tractor

Series:

Series:	8440	→ 8640
	8450 ↓

Transmission

Transmission
Transmission:	John Deere Quad-Range
Type:	partial power shift
Gears:	16 forward and 6 reverse
Clutch:	hydraulic wet disc
Oil capacity:	160 qts 151.4 L
Four gears (1-4) in four ranges (A-D). Tractor must be stopped to select range. Power shift between gears 1-2 and 3-4 within range.

Speeds

Speeds
With 18.4-38 tires.

Capacity

Capacity Fuel:156 gal
590.5 L
Hydraulic system:40 gal
151.4 L

Hydraulics

Hydraulics Type:closed center
Capacity:40 gal
151.4 L
Valves:2
Pump flow:33 gpm
124.9 lpm

Tractor hitch

Tractor hitch Rear Type:III
Rear lift:8545 lbs
3876 kg

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:independent
Rear RPM:1000

Dimensions & Tires

Dimensions & Tires Wheelbase:125 inches
317 cm
Weight:26,590 lbs
12061 kg
Front tire:18.4-34
Rear tire:18.4-34
Full dimensions and tires ...

1979 - 1982

Iron Horses Series

Four-wheel Drive (4WD) tractor

Series:

Series:	8440	→ 8640
	8450 ↓

John Deere 8440 Tires

John Deere 8440 Tires
Ag front:	18.4-34
Ag rear:	18.4-34

Dimensions

Dimensions
Wheelbase:	125 inches 317 cm
Length:	223.5 inches 567 cm
Operating weight:	26,590 lbs 12061 kg *With 20.8-38 duals.
Ground clearance:	19.4 inches 49 cm
Front axle:	Rack-and-pinion: 3.937 by 95.8 inches 99 by 2433 mm
Front axle:	Rack-and-pinion: 3.937 by 118.4 inches 99 by 3007 mm
Rear axle:	Rack-and-pinion: 3.937 by 95.8 inches 99 by 2433 mm
Rear axle:	Rack-and-pinion: 3.937 by 118.4 inches 99 by 3007 mm
Front tread:	63 to 130 inches 160 to 330 cm
Rear tread:	63 to 130 inches 160 to 330 cm

John Deere 8440 Height

John Deere 8440 Height
Hood:	87.1 inches 221 cm
Cab:	126.6 inches 321 cm
Exhaust:	134.5 inches 341 cm

8440 Serial Numbers

8440 Serial Numbers Location:Serial number plate on the rear of transmission case.
photo of 8440 serial number
1979:1000
1980:2266
1981:3758
1982:5235

how to read serial numbers...