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Wp WP-2100/125 - trailer of EU class O4: 20,000 kg gross weight, 7,540 kg unladen weight, 12,400x2,500 mm, built 1973, width 2,500 mm.
With a gross weight of 20,000 kg, the WP-2100/125 from Wp belongs to the EU trailer class O4 (above 10,000 kg gross weight), the heavy trailers and semi-trailers towed behind tractor units or heavy trucks in long-haul and heavy-transport work. Year of manufacture 1973. Trailers in this class need a compressed-air brake system.
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With an unladen weight of 7,540 kg, that leaves a payload of 12,460 kg. The dimensions are 12,400 mm in length and 2,500 mm in width.
Fifth-wheel or drawbar load and the design of the coupling decide which tractor unit suits a trailer like this. At this weight class the trailer is built for long-haul or heavy and abnormal-load work, not for occasional private use.
On a viewing, the brake cylinders, lines and the air system's tightness are among the first points to check. Tyres and rims should be checked for age and even wear, especially if the trailer has stood unused for a while. On bodies with tarpaulins or side boards, the condition often only shows up on close inspection for leaks and deformation. Paperwork and the validity of the roadworthiness test belong to every viewing. The brake system and brake lines deserve particular attention, as this is an area often neglected in everyday use. With several axles, a test drive is a good chance to compare braking effect between axles.
Sources: SpecCodex-Register: Kennwerte des Modells Wp WP-2100/125
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