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Wheel bearing replacement question

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bigjones

bigjones

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Hi folks,

Ok, I've got the hub off, no problem.

Haynes says "Carefully tap out the tapered distance piece and outer bearing with a suitable drift"

I've got a wooden dowel that is pressing against the inner ring of the outer bearing. I've tried tapping but no joy. I'm about to increase the "tapping" with a BFH but thought to check with you guys before proceeding.

Cheers, Adrian

Hub1.jpg


Hub2.jpg
 
Treat the outer race to a dose of penetrating oil like Kroil and then take a whack at it. It should be a light press fit so it will take some effort to drive it out. You're quite likely to break that wooden drift even it it's hardwood, so be prepared. Eventually I'd look for a nice piece of brass rod stock to use for this type work where you don't want to cause any marks on the surrounding parts.
 
I just used a big screwdriver and a BFH.

I'm 95% sure there is a slot that you can get a screwdriver in to pound on the bearing
 
actually there are two slots 180° apart. these allow you to tap out the bearing using a drift. a drift is a better tool than a screw driver to pound on, safer too. Using the slots also lets you tap on the outer race, not the inner, less likely to damage the bearings that way.


mark
 
Outer race is the key.
 
OK guys, thanks for the comments. Bill, you were right about the dowel!
I'm at this stage now - that is the outer bearing, without the outer race. What next? (sorry for the dumbass questions) Jones.
OuterBearing.jpg
 
Look inside with a flash light for the outer race. drive it out with a suitable drift and hammer.
 
Now look at the outer side of the large race and from the inside you should see a notch on opposite sides of the hub, just large enough to get the edge of your drift onto the edge of the outer race, then drive it out a couple of taps on one side then the other. It will eventually pop out. Then the same for the inner bearing using the notches in the hub for it as well. To install the new bearings you'll need a driver that fits the outer race of each bearing, don't want to drive on the inner races at that can damage the bearings. If you buy the bearings locally the part store can probably press them in for you at very little charge, or any auto machine shop can do as well. Probably better than driving them in unless you are experienced and know how to avoid damaging the bearings.
 

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Using a socket of the same or nearly same diameter as the outer race will allow the bearing to be tapped, gently, gently, into the hub. Used this method many times witout dire results.
 
OK folks. Thanks again.

Everything is out - here are some shots of the grooves where you fit in your drift, as explained.
Grooves3.jpg


Grooves1.jpg


One more question. Which end of the new bearing goes in first - I'm thinking it is the end as shown in blue on the right:
WhichSideFirst.jpg
 
Yo Hairyone!

Unfortunately there is no markings on the bearing. (Probably to stop me coming after the manufacturer when they disintegrate after 10 miles)

(Oh yeah, another question: which way round for the grease seal - spring on the outside?)

Bag.jpg
 
bigjones said:
Bag.jpg
Click to expand...

<span style="font-size: 11pt">Wow! All the way around the world for this set of bearings...

AT LEAST they were<span style="font-weight: bold"> "ASSEMBLED IN ENGLAND"</span> !! </span>
 
Spring on the outside - take the spring out - insert the seal - reinstall spring. Otherwise you will smash the spring - don't ask me how I know
 
Kevin,

Yeah, I wasn't going to make any comments.

John Twist's video is for the MGB - tapered roller bearing. The Aussie newsletter, while very interesting, doesn't tell you which way round.

I guess I could put them in the way the old ones were but possibly the PO didn't put them in the right way round.

Cheers, Adrian
 
I asked this same question in a thread about 22 pages back...GrahamP uploaded a pic that he got from someone else, so I'll reference it too and keep it circulatin'.
grin.gif


bearings.jpg


Best illustration I've seen that breaks it right on down.
 
bigjones said:
Kevin,

Yeah, I wasn't going to make any comments.

John Twist's video is for the MGB - tapered roller bearing. The Aussie newsletter, while very interesting, doesn't tell you which way round.

I guess I could put them in the way the old ones were but possibly the PO didn't put them in the right way round.

Cheers, Adrian
Click to expand...

Sorry Adrian,
I was just offering these as supplemental info. Not to answer the "which way" question.
It has been awhile since I last did this, but I seem to remember that there WAS a right way & wrong way. I can't remember which was which right now... Of course the right way absorbs lateral loads better...
I'll dig to see if I can find an answer for you...
-Bear-
 
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