Dust cover

[uct]

Must be number 1. The cover is inside a chrome cap thats part of the wheel

[Als]

Three things I could think of. No particular order.
1- hit-bumped something
2- over greased ( if that’s the problem check inside ALL drums for excess grease ) brake failure eminent.
3- Someone messing with them.( vandals )
4- forgot to put back on. Something I could do.

[uct]

Just checked my whells and one of the ezlube rubbers was gone and on another wheel the whone dust cap was off. What would cause this 16 24rls