8420T by John Deere

2002 - 2005

2002 - 2005 8020 SeriesAgricultural Crawler tractor

Production

Production Manufacturer:John Deere
Type:Agricultural Crawler tractor
Factory:Waterloo, Iowa, USA

Variants

Variants 8420:wheeled tractor
8420T:crawler

2002 - 2005

2002 - 2005
8020 Series
Row-Crop tractor

Production

Production
Manufacturer:John Deere
Type:Row-Crop tractor
Factory:Waterloo, Iowa, USA

Variants

Variants
8420:wheeled tractor
8420T:crawler

John Deere 8420 Power

John Deere 8420 Power
Engine (gross):284 hp
211.8 kW
Engine (net):270 hp
201.3 kW
Engine (max):314 hp
234.1 kW
PTO (claimed):235 hp
175.2 kW
Drawbar (tested):207.49 hp
154.7 kW
PTO (tested):269.41 hp
200.9 kW
power test details ...

John Deere 8420 Engine

John Deere 8420 Engine
John Deere 8.1L 6-cyl diesel
Engine details ...

Mechanical

Mechanical
Chassis:4x4 MFWD 4WD
Steering:hydrostatic power
Brakes:hydraulic wet disc
Trailer brakes:hydraulic*Optional
Cab:Cab standard.
Transmission:16-speed full power shift
Transmission details ...

Capacity

Capacity
Fuel:160 gal
605.6 L
Hydraulic system:37 gal
140.0 L
ILS Hydraulic system:39.6 gal
149.9 L
Front hubs:3.6 qts
3.4 L
ILS Front hubs:4.2 qts
4.0 L
Front diff.:14.2 qts
13.4 L

Hydraulics

Hydraulics
Type:closed center pressure-flow compensated (PFC)
Capacity:37 gal
140.0 L
ILS Capacity:39.6 gal
149.9 L
Pressure:2900 psi
200.0 bar
Valves:4 to 5
SCV flow:30 gpm
113.6 lpm
Total flow:33.5 gpm
126.8 lpm *With standard 45cc pump
 42.5 gpm
160.9 lpm *Optional 57cc pump

Tractor hitch

Tractor hitch
Rear Type:III/IIIN
Rear lift:15180 lbs
6885 kg
 17300 lbs
7847 kg *Optional
Front Hitch:IIIN*Optional
Front lift:11000 lbs
4989 kg

Power Take-off (PTO)

Power Take-off (PTO)
Rear PTO:independent
Clutch:hydraulic wet discs
Rear RPM:1000 (1.75)
 540/1000 (1.375 optional)
Engine RPM:540@1975
1000@2200

Dimensions & Tires

Dimensions & Tires
Wheelbase:118.9 inches
302 cm
 117.7 inches
298 cm (ILS)
Weight:21650 to 23780 pounds
Front tire:16.9R30
Rear tire:18.4R46
Full dimensions and tires ...

8420 Serial Numbers

8420 Serial Numbers
Location:Serial number plate on rear of tractor.
2002:1001
2003:10001
2004:20001
2005:30001

how to read serial numbers...

Electrical

Electrical
Ground:negative
Charging system:alternator
Charging amps:150
Batteries:2
Battery CCA:925
Battery volts:12

John Deere 8420T Power

John Deere 8420T Power Engine (gross):284 hp
211.8 kW
Engine (net):270 hp
201.3 kW
Engine (max):314 hp
234.1 kW
PTO (claimed):235 hp
175.2 kW
Drawbar (tested):205.84 hp
153.5 kW
PTO (tested):270.62 hp
201.8 kW
power test details ...

2002 - 2005

2002 - 2005
8020 Series
Agricultural Crawler tractor

OCED Tractor Test 1778

OCED Tractor Test 1778

OCED Tractor Test 1778

OCED Tractor Test 1778
Diesel 16-speed crawler
April 7 - 27, 2000
Link: OCED Tractor Test 1778 file
PTO performance
Max power:270.62 hp
201.8 kW
Fuel use:14.6 gal/hour
55.3 l/hour
Power at rated engine speed:236.75 hp
176.5 kW
Fuel use:13.7 gal/hour
51.9 l/hour
Drawbar performance
Max power:205.84 hp
153.5 kW
Fuel use:13.7 gal/hour
51.9 l/hour
Gear 10 used for power test.
Max pull:27,233 lbs
12352 kg
Gear 3 used for pull test.

John Deere 8420T Engine

John Deere 8420T Engine John Deere 8.1L 6-cyl diesel Engine details ...

2002 - 2005

2002 - 2005
8020 Series
Agricultural Crawler tractor

Engine Detail

Engine Detail
John Deere
turbocharged diesel
6-cylinder
liquid-cooled inline
Displacement:496 ci
8.1 L
Bore/Stroke:4.56x5.06 inches
116 x 129 mm
Rated Power (ECE R24):270 hp
201.3 kW
Rated Power (EC 97/98):284 hp
211.8 kW
Maximum Power (ECE R24):300 hp
223.7 kW
Maximum Power (EC 97/68):314 hp
234.1 kW
Compression:16.5:1
Rated RPM:2200
Idle RPM:900-2300
Operating RPM:1500-2200
Starter volts:12
Coolant capacity:35.9 qts
34.0 L

Engine Oil

Engine Oil
Oil capacity:22.7 qts
21.5 L
Oil change:250 h

Mechanical

Mechanical Chassis:crawler
Steering:electro-hydraulic power
Brakes:hydraulic wet disc
Cab:Cab standard.
Transmission:16-speed full power shift
Transmission details ...

2002 - 2005

2002 - 2005
8020 Series
Agricultural Crawler tractor

Transmission

Transmission
Transmission:John Deere PowerShift
Type:full power shift
Gears:16 forward and 4 reverse
Oil capacity:260 qts
246.1 L

Speeds

Speeds
Fourth reverse at 1600 RPM.

Capacity

Capacity Fuel:130 gal
492.1 L
Hydraulic system:65 gal
246.0 L

Hydraulics

Hydraulics Type:closed center pressure flow compensated (PFC)
Capacity:65 gal
246.0 L
Pressure:2900 psi
200.0 bar
Valves:5
Pump flow:30 gpm
113.6 lpm
Total flow:33.5 gpm
126.8 lpm
 42.5 gpm
160.9 lpm (optional)

Tractor hitch

Tractor hitch Rear Type:III/IIIN
Rear lift:15,180 lbs
6885 kg

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:independent
Rear RPM:1000 (1-3/4)

Dimensions & Tracks

Dimensions & Tracks Wheelbase:89 inches
226 cm
 120 inches
304 cm (wide track opt)
Weight:25950 to 26380 pounds
16-inch tracks Full dimensions and tracks ...

2002 - 2005

2002 - 2005
8020 Series
Agricultural Crawler tractor

John Deere 8420T Tracks

John Deere 8420T Tracks
Size:16-inch tracks
Option:18-inch tracks
 24-inch tracks
 30-inch tracks

Dimensions

Dimensions
Wheelbase:89 inches
226 cm
 120 inches
304 cm (wide track opt)
Length:207 inches
525 cm
 219.6 inches
557 cm (with front weights)
Width:103.7 inches
263 cm (min)
 150 inches
381 cm (max)
Height (cab):122.9 inches
312 cm
Clearance (rear axle):21.7 inches
55 cm
Clearance (drawbar):17.7 inches
44 cm

John Deere 8420T Weight

John Deere 8420T Weight
Shipping:25,950 lbs
11770 kg
Operating:26,380 lbs
11965 kg
Ballasted:28,795 lbs
13061 kg
Max capacity:31,500 lbs
14288 kg

8420T Serial Numbers

8420T Serial Numbers Location:Rear of tractor

Electrical

Electrical Ground:negative
Charging system:alternator
Charging amps:150
Batteries:2
Battery CCA:925
Battery volts:12

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