Before you tackle the shimmy dampner, you need to do a few basic troubleshooting items first:
- Make sure that the nose tire is inflated to specs.
- Make sure that the nose wheel bearings are no defective or the axle bolt is too loosed.
- Make sure that the nose tire is within balance.
- Make sure that the nose gear torque links do not have excessive play.
- Make sure that you don't have a warped main gear brake disc.
This will eliminate some of the more common causes of nose gear shimmy before you tackle the dampner. Usually the Skymaster shimmy dampners work for many years without any difficulty.