| Problem | Cause | Correction |
|---|---|---|
| Long wave marks | Out of balance wheel | Rebalance wheel |
| Stopping wheel without turning coolant off, causing unbalanced wheel | Rebalance wheel and make it a rule to stop coolant and run wheel until moisture is thrown off | |
| Wheel oil soaked on one side | Replace wheel | |
| Allowing wheel to absorb moisture from floor | Store in racks off floor |
