Im looking at replacing my tandem axle with a lift axle. how can i determine if its a 13,000 lb axle or a 20,000 lb axle. does it go by tube size, air bag size? its going to replace a axle under a 1977 chevy c-65 that ive been grossing 50,000lbs I want to make sure i get a heavy enough weight class to rplace.
They all should have a tag on sub frame-RideWell, Watson Chalin, Van Rayden or Hendrickson. https://www.stengelbros.net/Hendrickson-Lift-Axles_c_269.html