John Deere 7020

Built: 1970–1975 · Series: 20

More machines from model year 1970

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The John Deere 7020 belongs to the 20 series. Production: 1970–1975. The engine delivers 141 hp (104 kW), has 6 cylinders, with a displacement of 6,620 cm³. The engine comes from John Deere. Rated speed is 2,200 rpm. The machine is 5,500 mm long and 2,970 mm high. The unladen weight is 6,613 kg. The wheelbase measures 3,050 mm. Top speed is 34 km/h. The tank holds 591 litres. The engine is water-cooled. Tyres: front 18.4 R34, rear 18.4 R34. The model was built in USA. The fuel is diesel. Construction: articulated frame. The PTO runs at 1000 rpm. The 20 series covers 5 models. Rated output within it ranges from 49 to 141 hp; the 7020 sits at the top of that range with 141 hp. Its immediate neighbours are the 5020 below it with 122 hp. Unladen weight within it ranges from 2,086 to 7,800 kg; here the 7020 sits in the upper part of that range with 6,613 kg. 2622 John Deere models across 140 series are on record.

John Deere 1520 to 7020 – the second generation of New Generation tractors from Waterloo, Iowa: 1520 and 2520 as three-cylinders, 4520 and 5020 as big six-cylinders, 7020 as the first four-wheel drive, 36 to 104 kW

With the 20 series, John Deere replaced the first New Generation range (1010 to 4010) in the mid-1960s and carried the modular principle forward: Deere's own diesel engines, staggered by cylinder count, built in the same Waterloo, Iowa plant. The model number grew with the engine size – the 1520 was the small three-cylinder for part-time farms, the 2520 its larger version, the 4520 the turbocharged six-cylinder for arable farms, the 5020 the range's strongest conventional two-axle tractor. With the 7020, Deere brought its first articulated four-wheel-drive tractor to market in 1971, topping off the 20 series and opening the way to the later 30 and 40 series.

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The register lists 5 versions with engines of 2,690 to 8,701 cm³, 3 to 6 cylinders, outputs of 36 to 104 kW and operating weights of 2,086 to 7,800 kg at 2,200 to 2,500 rpm, mostly diesel, with one model also offered with a petrol engine.

The 20 series marks Deere's transition from the pure two-axle tractor to the articulated big tractor and remains, to this day, the reference for the sturdy first generation of the company's own six-cylinder diesels.

On used tractors, oil consumption and engine compression, the condition of hydraulic pump and PTO, rust on wings and sheet metal, and on the 7020 play in the articulation joint count; engine parts are well supplied through Deere's own dealer network.

Sources: SpecCodex register, model data: John Deere 20-Baureihe, John Deere (manufacturer)

Technical data

Engine

Engine make	John Deerecorrect
Fuel	dieselcorrect
Power	141 hp (104 kW)correct
Rated speed	2,200 rpmcorrect
Cylinders	6correct
Displacement	6,620 cm³correct
Cooling	water-cooledcorrect

Dimensions and weights

Length	5,500 mmcorrect
Height	2,970 mmcorrect
Wheelbase	3,050 mmcorrect
Unladen weight	6,613 kgcorrect

Drivetrain and chassis

Drive	four-wheel drivecorrect
Front tyres	18.4 R34correct
Rear tyres	18.4 R34correct
Top speed	34 km/hcorrect

Working data

Fuel tank capacity	591 lcorrect

Origin and approval

Plant	USAcorrect
Construction	articulated framecorrect

Other data

PTO speed	1,000 rpmcorrect

Where this model stands

Power-to-weight ratio: 15.7 kW/t (104 kW / 6.6 t)

Power class: Large (100–180 hp)

Stronger than 81% of the tractors in the register — out of 15,663 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the John Deere 7020 have?

The John Deere 7020 delivers 141 hp.

How much does the John Deere 7020 weigh?

The unladen weight is 6,613 kg.

What engine does the John Deere 7020 have?

6 cylinders, 6,620 cm³ displacement, Diesel.

How fast does the John Deere 7020 go?

Top speed is 34 km/h.

What are the dimensions of the John Deere 7020?

5,500 mm × 2,970 mm.

When was the John Deere 7020 built?

Production years: 1970–1975.

What to check before buying

Check the hour meter against the service records — a replaced instrument is the most common gap.
Compare the data plate and chassis number with the papers.
Check the weights in the papers against the figures here — attachments change them.
Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
Load the hydraulics and watch for sag.
Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 24 individual figures for this model. They come from 3 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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