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Wackerhut ST10L (built 1991) - an EU class O4 trailer: gross weight 12,300 kg, kerb weight 5,100 kg and width 2,530 mm, overall length 13.65 m
With a gross weight of 12,300 kg, the ST10L belongs to EU trailer class O4, the heavy trailers and semi-trailers above 10 tonnes hauled in long-distance and heavy-haulage traffic behind suitably powerful tractor units.
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The gross weight is 12,300 kg and the kerb weight is 5,100 kg, which leaves a payload of 7,200 kg. At a length of 13.65 m and a width of 2,530 mm, this single model's footprint takes shape. Added to that: the wheelbase is 8,150 mm.
Trailers of this weight class belong to heavy and long-distance haulage, hauled behind tractor units or heavy truck combinations. The compressed-air brake system, with automatic load-sensing, adjusts braking force to the load carried, and the axles carry the high payload on suitably rated suspension. On the road, a valid periodic roadworthiness inspection is mandatory, as is working lighting, regardless of how old the chassis itself is.
Buying used, the brake system and air lines deserve close attention: brake chambers, the load-sensing valve and coupling heads should be tight and free of corrosion. Check the chassis for rust at cross-members and axle mounts, the axle bearings for play, and the suspension for cracks. Tyres, brake linings and the electrical connector to the towing vehicle round off the check, and on older examples the lashing points and the load floor as well. Checking any surviving service records alongside the condition of the brake drums or discs and the wheel bearings rounds off a thorough inspection before any purchase.
Sources: SpecCodex-Register: Kennwerte des Modells ST10L
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