Heinrich Lanz D 8539
Built: 1934–1939 · Series: HR 7
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Heinrich Lanz HR 7 – Bulldog tractors from Mannheim, D 8500 to D 8539, horizontal single-cylinder rated at 22 kW at 540 rpm, multi-fuel operation
Heinrich Lanz built the HR 7 Series at its Mannheim plant; the four models D 8500, D 8511, D 8531 and D 8539 carry the same horizontal single-cylinder engine rated at 22 kW. As with the classic Lanz Bulldog, the engine ran on multiple fuels. In 1956, John Deere took over the Mannheim works, which continue to this day as a John Deere plant. The HR 7 Series was among the more powerful Bulldog series in Lanz's post-war line-up.
Read on 3 more paragraphs
The register lists here 4 versions with 22 kW rated output from the single-cylinder at a rated speed of 540 rpm. Unladen weights range from 3,000 to 4,150 kg, length, width and height from 3,050 to 3,380 mm, 1,700 to 1,820 mm and 1,860 to 2,340 mm.
With higher output than the smaller Lanz Bulldog series, the HR 7 Series was among the more powerful versions for mid-sized to larger farms and heavier draft work. Parts and technical knowledge for the Bulldog models are still maintained today by an active collector and club scene.
When buying these Bulldog models used, check the condition of the single-cylinder and its ignition system, the tightness of the cooling and fuel systems, the clutch and gearbox, and rust on the frame and bodywork; parts are supplied by specialist Bulldog dealers. as well as the function of the belt pulley and starter motor. Rust and leaks at the radiator usually reveal themselves already during a test run.
Sources: SpecCodex register, model data: Heinrich Lanz HR 7
Technical data
Engine
| Fuel | Vielstoffcorrect |
|---|---|
| Power | 30 hp (22 kW)correct |
| Rated speed | 540 rpmcorrect |
| Cylinders | 1correct |
| Bore | 225 mmcorrect |
| Stroke | 260 mmcorrect |
| Injection pressure | 80 barcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,300 mmcorrect |
|---|---|
| Width | 1,800 mmcorrect |
| Height | 2,340 mmcorrect |
| Wheelbase | 1,940 mmcorrect |
| Ground clearance | 270 mmcorrect |
| Unladen weight | 4,150 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 6V/2Rcorrect |
| Front tyres | 7.00-20correct |
| Rear tyres | 10.50-24correct |
| Top speed | 21.5 km/hcorrect |
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|
Where this model stands
Power-to-weight ratio: 5.3 kW/t (22 kW / 4.2 t)
Power class: Compact (< 40 hp)
Stronger than 16% 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 Heinrich Lanz D 8539 have?
The Heinrich Lanz D 8539 delivers 30 hp.
How much does the Heinrich Lanz D 8539 weigh?
The unladen weight is 4,150 kg.
What engine does the Heinrich Lanz D 8539 have?
1 cylinders, Vielstoff.
How fast does the Heinrich Lanz D 8539 go?
Top speed is 21.5 km/h.
What are the dimensions of the Heinrich Lanz D 8539?
3,300 mm × 1,800 mm × 2,340 mm.
When was the Heinrich Lanz D 8539 built?
Production years: 1934–1939.
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.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- 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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 21 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Other models in this series
Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
