streetsnake

I’m getting ready to tackle this project as I’ve put it off long enough on my front end restoration on my ‘79. I’m running out of stuff to do, so I have to bite the bullet. The main question is, does this hub look serviceable, as is. If not, what should I do? Just smooth out the roughness or?? Thanks in advance for the assist.

Rob Edwards

Those divots in the metal are going to make it hard (impossible...) for the inner bearing race to be fully seated. Did the insides of those hubs get bead blasted? Everything looks pockmarked, I'd be worried about the seals sealing.

Are these the hubs that were on the car before?

streetsnake

hey Rob. Not original to my 928. I picked these up a couple years ago, right when I got the 928. I knew even less than I do now, if that’s possible. 😂 I guess I’ll get the originals cleaned up and disassembled, ready for reassembly. Ugh

Mrmerlin

make sure you use a torch to heat the hubs to about 275F to 300F,
the races should fall out.
put the new races in the freezer for an hour.

You need a Mapp gas torch and an IR gun and a few sockets to drive the new races into position.
and some PPB Blaster sprayed onto the new races before insertion.

NOTE make sure that you have cleaned off all the grease,
and dont breath any fumes from brake cleaner that has been heated its poison.

streetsnake

So I decided to try a utilize the original hubs. Followed the WSM and Dwayne’s (with Stan’s expertise interwoven) write-up. Not as bad as I was anticipating. The boss let me utilize her oven and kitchen floor for disassembly. I made sure to drive the old races out utilizing the race edge but I do see a couple little nicks I may try to flatten out. Wish I could get the hubs cleaned up a bit better but I think they’ll suffice. Would it be a good idea to polish the spindle “barrels”? They aren’t marred but not extremely smooth, like the spindles themselves or does the spindle ride on the bearings entirely and the polishing would be futile? The first time I’ve changed bearings in any car…half way done.

Mrmerlin

not sure how your nicking the seating areas,
but they all have to be flush,
take a new flat punch and carefully tap the ridges down,
then use a small stone to read the surface..
I would not try to remove any metal from the spindles,
as it will just make more free play .

streetsnake

that wasn’t from me. I did not nick anything.

Mrmerlin

the seating surfaces have nicks in them that will prevent the race from fully seating.
needless to say use a stone and if you find any hi spots then dress them down

streetsnake

When installing the wheel bearing seal, what side faces toward the inside of the hub. Top pic or bottom? My vote would be that the top faces inside?

Rob Edwards

Top pic. From one of Dwayne's writeups:

streetsnake

Thanks Rob. I was looking at that exact picture. Couldn’t quite tell, so I thought I’d double check to make sure.

Rob Edwards

If you overexpose it the letters on the rubber become visible.