Originally Posted by pdodds
Have new 2016 Interstate. Experiencing vibration between 35-60 mph. Took back to factory and they cannot find problem. Sent me to Mercedes and they think it might be in the added airsuspension?? It is at the Mercedes dealer now and they are ordering some sort of apparatus do some measurements. At first they were going to change drive shafts but then decided to wait till they do more testing. they did perform Road force balance on tires and vibration is still there.
Any suggestions appreciated. Thank you
Welcome to the Airforums!
Basic principle of troubleshooting is, check the easy things first. Wheel balance was an easy thing to check, but not the only
Front end alignment is your next step. When Airstream buys the empty Sprinter vans to do the conversion, they are properly alignedó for an empty van. Then Airstream adds a few thousand pounds of interior furnishings, and the alignment changes. But Airstream isn't equipped to do front end alignments. So EVERY owner of a new Interstate should take it straight to their Mercedes dealer, or Freightliner dealer, or some other place with service bays big enough for a Sprinter, and get the front end aligned.
Since your van is already at a Mercedes dealer, it's a simple matter of asking them to do the alignment.
If there's still vibration after that, then you can look for more esoteric causes.