My main point in starting this thread was not just about how to clean the roller side of the sheave, it was also about using a parts cleaner that re-circulates the liquid cleaner. It seems like it would be easy to contaminate the sheave face if any liquid cleaner used to clean any part that was previously lubed with tink seal (cage bearing, secondary spring cup and pins etc). I'm thinking a parts cleaner might not be a good idea.