John Deere 7830 vs John Deere 8420 - compare

Compare tractors: John Deere 7830 vs John Deere 8420

John Deere 7830 vs John Deere 8420 compare - general information

Specs John Deere 7830 John Deere 8420
Brand John Deere John Deere
Model John Deere 7830 John Deere 8420
Series n.d. n.d.
Previous model John Deere 7820 John Deere 8410
Next model John Deere 7230R John Deere 8430
Smaller John Deere 7730 John Deere 8320
Larger John Deere 7930 John Deere 8520
Years from 2007 to 2011 y. from 2002 to 2005 y.
Cab with ROPS No No
Reviews John Deere 7830 reviews New! John Deere 8420 reviews New!

John Deere 7830 vs John Deere 8420 - performance

Specs John Deere 7830 John Deere 8420
Maximum power (HP / kW) 205.36 KM (151 kW) 314 KM (230.88235294118 kW)
Engine RPM 2100 rpm 2200 rpm
Fuel consumption n.d. 197 g/kWh ( rpm)
Fuel tank capacity 392/358 l. 606 l.
Max. speed n.d. n.d.

John Deere 7830 vs John Deere 8420 - engine

Specs John Deere 7830 John Deere 8420
Fuel type Diesel Diesel
Engine producer John Deere n.d.
Engine model John Deere John Deere
Engine type Diesel (diesel engine) Diesel (diesel engine)
Engine capacity 6.8 l. 8.1 l.
Strokes, qty n.d. n.d.
Cylinders 6 6
Compression n.d. n.d.
Bore 106 mm 116 mm
Stroke 127 mm 129 mm
Maximum torque 957 Nm / 1600 rpm n.d.
Air filter n.d. n.d.
Fuel filter n.d. n.d.
Fuel filter chambers, qty n.d. n.d.
Oil filter n.d. n.d.
Oil pump n.d. n.d.
Speed control (control) n.d. n.d.
Injection pump n.d. piston pump, direct fuel injection
Injectors n.d. multi holes injector
Injection pressure n.d. n.d.
Cooling system liquid cooled engine n.d.
Forced cooling n.d. n.d.
Cooler Yes
Thermostat Yes
Cooler type tubular-plate cooler
Coolant system capacity n.d. n.d.
Clutch n.d. n.d.

John Deere 7830 vs John Deere 8420 - turbocharger

Specs John Deere 7830 John Deere 8420
Turbocharger Yes Yes (Turbo Diesel engine)
Dual turbocharger No No
Intercooler Yes No
Aftercooler No No
Wastegate valve No No
Variable geometry No No
Additional parameters

John Deere 7830 vs John Deere 8420 - electronics

Specs John Deere 7830 John Deere 8420
Supply voltage starter (V) n.d. 12 V
Ground n.d. negative ground
Battery (V) n.d. 12 V
Battery, qty n.d. 1
Charging system Generator Alternator
Charging system producer n.d. n.d.
Ignition Manual Manual
Rear stop lamp Yes Yes
Rear agricultural lamp n.d. n.d.
Cock lamp No No

John Deere 7830 vs John Deere 8420 - PTO

Specs John Deere 7830 John Deere 8420
PTO rpm 540 rpm 1000 rpm
PTO control manual manual

John Deere 7830 vs John Deere 8420 - brakes

Specs John Deere 7830 John Deere 8420
ABS No No
Brake assist No No
Braking system n.d. n.d.
Differential No No
Brake type disc brakes, wet brakes, hydraulic disc brakes, wet brakes, hydraulic
Discs Single Single

John Deere 7830 vs John Deere 8420 - dimensions

Specs John Deere 7830 John Deere 8420
Weight n.d. from 9100 kg to 14000 kg (depending by model)
Weight with ROPS n.d. n.d.
Weight with cab n.d. 9100 kg
Length 5500 mm 5850 mm
Height 3180 mm 3200 mm
Width 2440 mm 2540 mm
Clearance 566 mm n.d.
Rear clearance n.d. n.d.
Front track width n.d. n.d.
Rear track width n.d. n.d.
Wheelbase 2960 mm 3020 mm
Front tires 11-16 16.9R30
Rear tires n.d. n.d.
Max. mass of the trailer without brakes 1500 kg 1500 kg
Max. mass of the trailer with brakes n.d. n.d.
Max. axle load n.d. n.d.
Max. total weight 7850 kg n.d.
Turning radius n.d. n.d.

John Deere 7830 vs John Deere 8420 - drive

Specs John Deere 7830 John Deere 8420
Drive system 4x2, 2WD (depending by model) 4x4, MFWD, 4WD (depending by model)
Additional one wheel drive all-wheel drive, all four wheels at all times and it can be used full, front drive axle, mechanical drive, front drive axle
Permanent 4-wheel drive n.d. Yes
Permanent systems that constantly power all the wheels n/a Yes
Dynamic allocation of power between the axles n/a n.d., AWD drive
Independent Link Suspension None None
Articulated suspension
Crawler drive No No
Hydrostatic steering Yes Yes
Differential n.d. n.d.
Steering rod rod
Front rods n.d. n.d.
Rear planetary drives n.d. n.d.
Front planetary drives n.d. n.d.

John Deere 7830 vs John Deere 8420 - hydraulics

Specs John Deere 7830 John Deere 8420
Three-point hitch 7560 kg 11000 kg
Three-point hitch type n.d. n.d.
Three-point hitch performance n.d. n.d.
Three-point hitch pressure n.d. n.d.
Load Sensing No No
Closed Yes n.d.
Central No No
Constant flow No No
Constant pressure No No
Control system flow-compensated n.d.
Pump n.d. n.d.
Two-section distributor n.d. n.d.
Quick couplings n.d. n.d.
Auto Lift n.d. n.d.

John Deere 7830 vs John Deere 8420 - transmission

Specs John Deere 7830 John Deere 8420
Synchronous transmission n.d. Yes
Transmission mechanically synchronized n/a No, electro-hydraulic control
PowerShift No Yes
PowerShuttle No Yes
Additional two clutches (dual clutch gearbox), electro-hydraulic clutch control, fast shifting, Reversing mechanism
Hydrostatic transmission n.d. Yes
Forward gears unlimited (ranges: - 1) 16
Reverse gears unlimited (ranges: - 1) 5
Creeper n.d. n.d.

John Deere 7830 vs John Deere 8420 - equipment

Specs John Deere 7830 John Deere 8420
Clevis Yes (???) Yes (???)
Lower catch n.d. n.d.
Air conditioning n.d. n.d.