Zettelmeyer ZL602Si – specifications
Series: Zettelmeyer Wheel Loader
Build year not documented · Data origin: Directory data · sources
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Zettelmeyer ZL: decoding wheel loader model codes from a vanished brand
A used Zettelmeyer ZL8C or ZL501 for sale points to a brand with no independent company left: founded in Konz in 1897, Zettelmeyer began building wheel loaders in 1953 and by 1968 offered the broadest wheel loader range of any German maker. The firm was sold to IBH in 1975; after IBH's 1983 bankruptcy, ownership passed to H. Harms and then, in 1987, to W. Eder. Volvo took a stake from 1990 and acquired the brand outright in 1994, after which the technology continued under Volvo Construction Equipment.
Read on 2 more paragraphs
The "ZL" (Zettelmeyer Lader) code plus a number is a model name, not a fixed weight class — the numbering was reassigned repeatedly over the decades. Across the 43 ZL models recorded in SpecCodex, operating weight spans 1,800 to 23,800 kg and engine output 21 to 206 kW; lower numbers such as ZL8C tend to mark compact machines, higher ones like ZL501 or ZL401 heavier loaders. A trailing letter (such as C or D) marks a revision stage of the same model.
Buying one of these discontinued machines means checking parts availability through Volvo channels, inspecting hydraulic cylinders and pivot bushings for play, and test-running steering and tipping. Models such as ZL18D, ZL302 and ZL42C illustrate the spread between the light and heavy end of the range. The data plate and build year, read with the letter revision, tell far more about the actual specification than the number alone.
Sources: SpecCodex register, model data: Zettelmeyer Wheel Loader, – Zettelmeyer (Wikipedia), – Zettelmeyer-Archiv, Volvo Construction Equipment
Technical data
Engine
| Engine model | BF4L 1011Tcorrect |
|---|---|
| Power | 61.8 hp (43.3 kW)correct |
| Rated speed | 2,300 rpmcorrect |
| Torque | 193.1 Nmcorrect |
| Speed at max. torque | 1,550 rpmcorrect |
Dimensions and weights
| Unladen weight | 5,000 kgcorrect |
|---|
Where this model stands
Power-to-weight ratio: 8.7 kW/t (43 kW / 5 t)
Stronger than 12% of the wheel loaders in the register — out of 1,251 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Zettelmeyer ZL602Si have?
The Zettelmeyer ZL602Si delivers 61.8 hp.
How much does the Zettelmeyer ZL602Si weigh?
The unladen weight is 5,000 kg.
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.
- 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 7 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: RitchieSpecs equipment specifications (retrieved August 2026) · Data sources and cross-checks
Wheel loader in 3D section
Turn the model, look inside and click an assembly — each one is explained.
