Brake bolt problems .......Help!

[destro77]

This is the second time I have had to replace a rotor due to the bolt that make the brakes squeeze not working which eats away at the rotor . The Mechanic says the grease on the Bolt washes off and theres nothing I can do about it but have it greased again. I have had the truck 6 years before this happened so it should not be happening twice in 1 year now! Anyone else have this problem?

 

[vt_hokie2008]

The pistons could be locking up too, not just the pins. Might just need new calipers or rebuild what you have. The pins are covered a bit, so the grease should last quite awhile.