Did I bugger this 123 rear hub? - PeachParts Mercedes-Benz Forum

andrewjtx · #1 04-27-2011, 01:10 PM

Here are the two rear hub flanges that I removed from the '84 wagon.

The side-side pic is how they were oriented in the car, with the driver's side having been exposed to a brake fire then doused with water. I'm assuming which this one had much more rust/corrosion that the passenger side.

Anyhow, I attempted to remove the outer bearing and it wasn't working so well. I then made what I believe to be a major mistake in driving a steel chisel under the bearing in an effort to lift it off. When that still didn't work, I broke the outer cage and then tapped the upper lip of the race with chisel & hammer which worked much better. Performed only that technique on the passenger side.

So my question is: Is this hub with chisel marks on it fixable or usable in it's current state. Or do I need to scrap this one and just wait to take one off of the '85 next week when the swap takes place?

andrewjtx · #2 04-27-2011, 01:11 PM

On a side note, Barkeepers Friend and a ScotchBrite pad work wonders for taking off any light rust and overheating marks on the finer machined surfaces!

TheDon · #3 04-27-2011, 01:11 PM

I've never done this but anything that is a bearing surface I'd want it to be flawless.

When I scotchbrite any machined surface I use the non scratching pads and rinse with brake cleaner.

andrewjtx · #4 04-27-2011, 01:27 PM

Yeah, both the pads and the BKF are non-scratching. Just works well at taking off anything sitting on the surface.

Stretch · #5 04-27-2011, 02:04 PM

I think the best and safest answer is probably => yes you've buggered the hub.

If you check out the limits in chapter 35-360 in the FSM they are pretty strict.

However, if you can get someone to turn the hub on a lathe then you might be able to get within the specifications when you come to reassemble it. BUT it is a bit dodgy in my opinion. Even here where prices are high the cost of a second hand trailing arm is about 70 euros... I'm of the opinion trying to fix that damage isn't worth the risk. Surely someone here will have a spare they can send you? I'd send you mine but the postage would kill us both off...

andrewjtx · #6 04-27-2011, 02:11 PM

I have both of the ones on the '85, but I'm driving that one. I was hoping to get the new bearings installed in the repainted trailing arms. That way, all I have to do is drop the old rear out of the '85 and put all the new/refurb parts from the '84 into it.

Stretch · #7 04-27-2011, 02:33 PM

Quote:

Originally Posted by andrewjtx

I have both of the ones on the '85, but I'm driving that one. I was hoping to get the new bearings installed in the repainted trailing arms. That way, all I have to do is drop the old rear out of the '85 and put all the new/refurb parts from the '84 into it.

Probably the safest option - pain in the backside though. I hate it when a plan doesn't come together.

Wait for some more opinions may be someone else has had actual experience of this sort of damage and not just that oh crap look at those limits feeling I got when I checked the FSM.