Heard a noise

[mjb765]

Heard a noise and too the R/F rotor off and found the bearing seized on to the spindle. A little heat and it came off, but this is what the spindle looks like. Ok to use it or replace the spindle??

[roadman5312]

               Replace it     

[brads70]

 

               Replace it     

[mjb765]

That's what I figured you guys would say.......it's out already......

this was supposed to be just front wheel bearings...


Thanks

[blown motor]

IMO there's nowhere near enough damage to cause any kind of a problem. I'm assuming from the picture that the blackened area is just a bit of surface burn from applying heat. File the edges of the nicks to make sure the bearing and seal slide on smoothly and carry on. I've replaced a boat load of wheel and shaft bearings over the years, some with spindle damage worse than that, and had no issues afterwards. Keep in mind that those nicks represent maybe 2% (I'm guessing here) of the total seating area. If 98% doesn't do the job then 100% won't either.

[mjb765]

IMO there's nowhere near enough damage to cause any kind of a problem. I'm assuming from the picture that the blackened area is just a bit of surface burn from applying heat. File the edges of the nicks to make sure the bearing and seal slide on smoothly and carry on. I've replaced a boat load of wheel and shaft bearings over the years, some with spindle damage worse than that, and had no issues afterwards. Keep in mind that those nicks represent maybe 2% (I'm guessing here) of the total seating area. If 98% doesn't do the job then 100% won't either.

I was on the fence about do it or not, but decided what the hell.....and took it out.

And now my local guy may not be able to get it so it may be clean it up, some emery cloth and put it back in.

[ted]

what causes this?

[1 Wild R/T]

what causes this?

Overloaded bearing, proper maintenance helps greatly but Chrysler knew they were experiencing to many bearing failures on the 70-71 disc brakes so in 72 they increased the size of the inner bearing.....

[Bullitt-]

what causes this?

Other than not doing proper maintenance I'd guess seal failure allowing contaminants in.
Many of these go about forever with no issues when taken care of properly.

[burdar]

It was 73 when they went to the new spindle...bigger bearing.  I found these spindle sleeves that Dr Diff sells.  It lets you put the larger bearings and newer rotor on the older spindles.
http://www.doctordiff.com/70-72-b-e-body-disc-brake-spindle-sleeves.html

[mjb765]

Unfortunately according to the size chart, I already have the later spindle. I needed the A17 inner bearing which is the larger one.

[burdar]

I don't see what's wrong with the one you have.  If a new bearing slides onto the spindle and isn't loose, what's the problem?

[mjb765]

I don't see what's wrong with the one you have.  If a new bearing slides onto the spindle and isn't loose, what's the problem?

That's what I finally did......cleaned it up and used the old spindle.