Originally Posted by danielfochtman
Now, the dust cap, i had to hammer in. So it fit snug. After test driving it around the block (appx 4 miles) the new Dust cap blew out again. I have to buy a new one but i have no idea what would have caused it to pop out....that's 2 dust caps gone in the wind.
On top of this, the rotor/hub assembly feels warmer than the other side. I packed with a lot of grease so i'm not sure if i should take apart and pack more.
The difference in perceived temperature could be part of the reason for the lost cap. As the assembly heats up, the tight fit you had initially will loosen due to thermal expansion.
It's possible you over-packed the bearing with grease and that is why it's running hot. I've seen this much more with turbo-machinery bearings though (12-36" in diameter - considerably bigger than a wheel bearing!).
Did you mic the rotor prior to assembly to be sure it was within spec? The bearing itself could be in a bind causing it to run hot if the bore is too small, out of round or not concentric to the spindle.
Interesting problem - especially given the large amount of 'new' parts you're dealing with. Keep us posted.