Need Help Stat on Wheel Bearing Installation Proble - Mercedes-Benz Forum

 
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post #1 of 6 (permalink) Old 08-14-2014, 11:49 AM Thread Starter
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Need Help Stat on Wheel Bearing Installation Proble

In replacing the front wheel bearing on my 1981 380sl, I didn't realize that the races were as tapered as the bearings. So I put the races in upside down with the Timken logo facing out, and now I can't get the bearings in. Nor can I get the races out because, there's no lip to tap on.

Can anyone out there tell me what I can do to fix the problem, short of getting a new hub?

Thanks a lot in advance.
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post #2 of 6 (permalink) Old 08-14-2014, 12:59 PM
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Take the hub to a machine shop. They can fit a special tool into the race that will catch it and then use a press to push it out.

It will ruin the race, though, so buy another bearing before you go, and you may as well have them press it in for you. I doubt they will charge extra to put in the new one.

Good luck.

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post #3 of 6 (permalink) Old 08-14-2014, 02:37 PM Thread Starter
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Take the hub to a machine shop. They can fit a special tool into the race that will catch it and then use a press to push it out.

It will ruin the race, though, so buy another bearing before you go, and you may as well have them press it in for you. I doubt they will charge extra to put in the new one.

Good luck.
Thanks very much for this info, Check Codes. It gives me hope that I can get the car back on the road this weekend.

Do you happen to know if a typical machine shop will have this tool? Or is it something that only a few shops would have?
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post #4 of 6 (permalink) Old 08-14-2014, 03:10 PM
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Thanks very much for this info, Check Codes. It gives me hope that I can get the car back on the road this weekend.

Do you happen to know if a typical machine shop will have this tool? Or is it something that only a few shops would have?
Any of them should. The one used will be part of a set of what you might think are really fat washers with shoulders. It will be slightly larger than the smallest largest diameter of the race and will catch the working surface of the race, which is why it will ruin it.

I hope you figured this out before you put in both races. Bad enough to have to learn this lesson paying a machine shop and buying one bearing twice.

Good luck.

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post #5 of 6 (permalink) Old 08-15-2014, 04:37 AM Thread Starter
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Any of them should. The one used will be part of a set of what you might think are really fat washers with shoulders. It will be slightly larger than the smallest largest diameter of the race and will catch the working surface of the race, which is why it will ruin it.
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I hope you figured this out before you put in both races. Bad enough to have to learn this lesson paying a machine shop and buying one bearing twice.
No such luck . However, I got both bearings for around $20. So replacing them won't break the bank.

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I Good luck.
Thanks again. I'll post the results of my trip to the machine shop later on for anyone who makes the same mistake.
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post #6 of 6 (permalink) Old 08-16-2014, 08:07 AM Thread Starter
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Thanks for the advice. As it turned out, not one of the 3 local machine shops I went to had, or had even heard of, a tool that could do the job. And none of the mechanics at the general auto repair shops I went to could pry or chisel them out.

So I finally went to the local BMW Indy -- John Koz, on Rt 73 in Palmyra, NJ, who has a great reputation in the BMW community -- and asked him if he could use his welder to deposit some metal on the races, so I'd have some thing to hit. Sure enough, it worked great. 15 minutes later, they were out, and I got new bearings and races this morning.

So, now all I have to do is make sure that I get the final adjustment right using the "feel" method that many people have recommended. Hopefully, I won't screw that up, too.
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