Hello friends, please excuse the maybe a little stupid question, but I have rather little to do with trucks and hope that you can explain something to me. On my night newspaper tour I supply a supermarket, in whose parking lot always a central axle trailer (Frigo) is parked, which is picked up in the early morning hours again. This trailer is usually horizontal (is clear ), at the front and at the back each held by a support. Recently I came to the parking lot and saw that the said trailer had tilted forward, i.e. the support points on the ground were the drawbar and the axle. Now the question: what happened there? I suppose the supports are pneumatic – did there come to pressure loss, so that the heavier front end of the trailer sank to the ground? Are there other explanation possibilities? Can a trailer then be “pumped up” again by means of the supports, or does it have to be lifted by crane or similar to be coupled? Thanks in the Vo Out & Kind Greetings Filip