Rear Bearing Installation

Mar 21, 2005 11 Replies

I'm at it again. I'm changing the rear bearings on my '87 VW GTI. Any tips on the best way to press the inner bearing race into the rotors in the absence of a hydraulic press and the right size press tool? I usually use a socket with a bolt/washer/nut in these situations, but I'm having trouble finding a socket that has the right diameter to match the thin edge of the race. If it doesn't match closely, I'm afraid I will damage the race or bearing seat during the process. Would it be okay to put the bearing in the race and press the whole thing in together? This would give me the larger area of the bearing face to press against. Will I damage anything if I do this? Any recommendations or experiences would be greatly appreciated.


I found a fender washer at Home Depot that matched my rear bearings.

I was replacing my disk+hubs too, and I only realized later that I could have had them pressed together before shipment for a reasonable fee.

Ah yes, Home Depot. One of my favorite sources of VW "specialty tools" at budget prices. I'll check out the fender washer idea. Thanks.

Never had a need to use a hydraulic press. For years, before the fancy tools came alomg... all I used was a brass drift punch.

My dad taught me to use the old races to hammer the new ones in. Just hit the old one with a sander/grinder around the edge fist to make sure it doesn't get stuck. ________ |/ \| < old one |\______/| < new one

Easier than that, just cut a slot in the old race with your cutoff tool. That will allow it to contract slightly, like a piston ring. Still a tight fit but will come out easily with a brass drift and a hammer.

nate

Never thought of this, but I like it. Especially the fancy illustration. Thanks!

I normally just use the old bearing race on the new bearing face tap real gently and keep turning the bearing. there are arguments that say you will damage the bearing face, but this has never happened to me kinda depends how hard you tap

Would it be okay to put the bearing in the

NO.

Place the old race on top of the new one, after first lightly tapping the new race slightly into place with a plastic hammer or similar tool.

Then strike the old race while holding it in position atop the new race, being sure to strike and then move the hammer to a position 180 degrees from the first strike.

Just keep tapping the new race until it "seats". You'll be able to tell when it is seated because the noise will change.

This is easy, and once you do it you'll see that.

Thanks to everyone for the useful advice. Sounds like an easier job than I thought.

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