Airstreams have a unique axle. Starting in 1961, the durtorque axle became standard on all airstreams. Instead of springs, the axle is surrounded by large rubber bands inside a tube. Unfortunately, every 50 years or so, the rubber breaks down. With the help of Harps RV in Lincoln, Ca, the axle was replaced. New axle, brakes, and drums! Ready for another 50 years!