Aton Schlüter Abtschlepperbau München GZA 25
Built: 1941–5/1947 · Series: GZ
More machines from model year 1941
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Anton Schlüter Munich GZ – the post-war wood-gas tractors: GZA 25 and GZV 25, 18.3 kW two-cylinder of 3,982 cc, a gas generator instead of a diesel tank
Anton Schlüter of Munich was one of the traditional Bavarian farm-machinery makers and, in the post-war years, built wood-gas tractors alongside diesel ones, when diesel fuel was rationed and scarce. The GZ series – GZA 25 and GZV 25 – ran on a gas generator burning gas produced from wood instead of a diesel tank, a common stopgap for farm tractors in the 1940s.
Read on 3 more paragraphs
The register lists 2 variants at 18.3 kW from a two-cylinder engine of 3,982 cc, a kerb weight of 2,200 kg, lengths of 3,200 to 3,400 mm, a width of 1,600 mm and heights of 1,750 to 1,900 mm at a rated 1,500 rpm.
Wood-gas tractors such as the GZ series bridged the shortage of liquid fuel in Bavarian farming in the immediate post-war years; the gas generator replaced the diesel tank with a wood gasifier that demanded more manual attention and maintenance than an ordinary diesel engine. As fuel supply normalised through the 1950s, such conversions quickly disappeared from the market and plain diesel tractors again became the rule.
Surviving examples are collectors' pieces today; what matters is the condition of the gas generator and its piping, tightness and corrosion on the gas-carrying parts, and – as with any tractor of this age – the clutch, gearbox and condition of the sheet metal. Parts for the tractor itself circulate through vintage-vehicle channels, while gas-plant components are made individually to order.
Sources: SpecCodex register, model data: Anton Schlüter München GZ
Technical data
Engine
| Fuel | Gas (Holzgas)correct |
|---|---|
| Power | 25 hp (18.3 kW)correct |
| Rated speed | 1,500 rpmcorrect |
| Cylinders | 2correct |
| Displacement | 3,982 cm³correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,200 mmcorrect |
|---|---|
| Width | 1,600 mmcorrect |
| Height | 1,750 mmcorrect |
| Wheelbase | 1,790 mmcorrect |
| Ground clearance | 350 mmcorrect |
| Unladen weight | 2,200 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 4V/1Rcorrect |
| Front tyres | 6.00-16correct |
| Rear tyres | 9.00-24correct |
| Top speed | 17.3 km/hcorrect |
Origin and approval
| Construction | semi-frame constructioncorrect |
|---|---|
| Units built | 630correct |
Where this model stands
Power-to-weight ratio: 8.3 kW/t (18 kW / 2.2 t)
Power class: Compact (< 40 hp)
Stronger than 12% 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 Aton Schlüter Abtschlepperbau München GZA 25 have?
The Aton Schlüter Abtschlepperbau München GZA 25 delivers 25 hp.
How much does the Aton Schlüter Abtschlepperbau München GZA 25 weigh?
The unladen weight is 2,200 kg.
What engine does the Aton Schlüter Abtschlepperbau München GZA 25 have?
2 cylinders, 3,982 cm³ displacement, Gas (Holzgas).
How fast does the Aton Schlüter Abtschlepperbau München GZA 25 go?
Top speed is 17.3 km/h.
What are the dimensions of the Aton Schlüter Abtschlepperbau München GZA 25?
3,200 mm × 1,600 mm × 1,750 mm.
When was the Aton Schlüter Abtschlepperbau München GZA 25 built?
Production years: 1941–5/1947.
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.
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This page carries 20 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.
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Other models in this series
Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
