Fortschritt Hangtraktor ZT 305
Built: 1981 · Series: Hangtraktor ZT
More machines from model year 1981
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
Fortschritt Hangtraktor ZT 305: water-cooled four-cylinder diesel four-wheel-drive tractor built for steep-slope work, 100 hp and 6,500 kg weight, built in 1981
Fortschritt was the name of an agricultural-machinery combine in East Germany, which also included the Schönebeck tractor works that built the ZT series. The ZT 305 was built in 1981 as a hillside tractor designed specifically for use on steep terrain.
Read on 3 more paragraphs
The ZT 305 is powered by a water-cooled four-cylinder diesel engine producing 100 hp, and is fitted with four-wheel drive. At a weight of 6,500 kg, it carries 16-20 tyres at the front and 18.4-34 tyres at the rear, an unusually mismatched tyre set for a hillside tractor.
Unlike an ordinary field tractor, a hillside tractor is purpose-built for use on steep gradients: a low centre of gravity, four-wheel drive and a high dead weight provide stability and traction on slopes such as those found in vineyards, mountain meadows or hilly arable land, where an ordinary tractor would risk tipping over or losing grip. The four-wheel drive additionally spreads drawbar force to the front axle.
When buying such an old hillside tractor secondhand, the condition of the front axle differential and the four-wheel-drive joints, and the tyres given the high weight and the mismatched sizes, matter most. Also worth checking are the diesel engine's injection pump and injectors, the cooling system, and the brakes and steering, since these components are under particular strain during slope work.
Sources: SpecCodex-Register: Kennwerte des Modells Fortschritt Hangtraktor ZT 305
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 100 hpcorrect |
| Cylinders | 4correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Unladen weight | 6,500 kgcorrect |
|---|
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Front tyres | 16-20correct |
| Rear tyres | 18, 4-34correct |
Where this model stands
Power-to-weight ratio: 11.3 kW/t (74 kW / 6.5 t)
Power class: Universal (40–100 hp)
Stronger than 66% 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 Fortschritt Hangtraktor ZT 305 have?
The Fortschritt Hangtraktor ZT 305 delivers 100 hp.
How much does the Fortschritt Hangtraktor ZT 305 weigh?
The unladen weight is 6,500 kg.
What engine does the Fortschritt Hangtraktor ZT 305 have?
4 cylinders, Diesel.
When was the Fortschritt Hangtraktor ZT 305 built?
Production years: 1981.
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.
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 8 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 →
Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · Values adopted and presented in our own form; changes from the source are possible. · How we check the data
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
