I know Front Hubs have been covered on this site a bunch, but I didn't see my specific question so I figured I would ask.
Spent part of today repacking three front hubs. I had one lying around, and I ordered up two used ones from Planet Miata.
Keeping in mind I have only done this once before, I grabbed the front hub tutorial (thanks Muda) and started down the steps.
The first hub I did I got lucky...it was an older 10 ball bearing model that Planet had sent me. Came apart and went together no problem. The only difficult part was the white plastic cages for the ball bearings is not as flexible as the black one for the 11 ball bearing ones. However it was much easier to get the "front" ball bearings back into these cages. The rear seal was in great shape and it went right in. Both races spin pretty freely.
Second one was also a used one from Planet. Take apart and goes together no problem (just the normal amount of cursing associated with the front balls but I'm getting better at those). I popped in a new rear seal from Advanced and put it to the side. Front race spins easy, rear race is a bit difficult
Now the third one I had already done previously, but was just waiting on new seals from Advanced. For some reason I couldn't get the seal in. Even tried a BFH...
Turns out this rear race has an extra metal flange on it? Is this some type of rain shield or something? I basically popped the rear race out, put in the new seal, then put in the rear race with its extra metal flange. This hub the front race spins freely, but the rear race is VERY stiff.
Any thoughts from the guys who see these things more often than I do? Did I make a mistake when re-assembling hub number 3?
In the picture of the three hubs, the right is the "old style" 10 ball bearing hub, the middle is the one I reassembled with the flange on that rear race (The third one I did), and the one on the left is the one that came with no flange on the rear race.
The other picture shows the two types of rear races I found.
races.JPG 128.42KB 5 downloads
hubs.JPG 126.55KB 3 downloads