Front wheel bearings - which way around

Rebuilding, adjusting, maintaining & alternatives

Front wheel bearings - which way around

Postby 73XTX » Wed Aug 21, 2013 1:18 pm

Forgive my technical ignorance here but was hoping to get both hubs off without the inner bearing falling apart.  

Having read a lot here and in "another place" I am now doubting my own thoughts.

As it came off - the king pin stub axle has been replaced at some point around ten years ago but I am unsure the bearings were put in the right way around.

The inner bearing coming off had the engraving on the inner ring facing the stub axle king pin.   I haven't extracted the remains of the outer ring from the hub yet but if there is any text, it would face the spacer.

The outer bearing text faces out towards the retaining nut.

There is no text indicating "Thrust" on the bearings.


Now to putting it back together.  Have new bearings from ESM but which way around should they go?

Option 1 - Engraved text facing in.  Ball bearings visible from each outer side of the hub with the spacer in between.  Thinner outer rim of bearing visible.


Option 2 - Engraved text facing out.  Ball bearings largely hidden by curved metal bearing cage.  Thicker outer rim of bearing visible.

Had trouble uploading pictures.

Thanks in advance

Rob.
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Postby woodywoodchipper » Wed Aug 21, 2013 1:59 pm

if using standard bearings, ie roller not taper it doesn't matter, but rule of thumb is to put markings (size) so you can read them,

if taper bearings they will only fit one way, outer race's with large side into hole and leading taper facing you as you look at them,,

I'm also having problems posting pic's so cannot show you,

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Postby bmcecosse » Wed Aug 21, 2013 3:03 pm

Oh is DOES matter a great deal with these bearings.  The general opinion is that the engraving sides must face towards each other - ie both towards the spacer.
 









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Postby 73XTX » Wed Aug 21, 2013 4:48 pm

Thanks woodywoodchipper and bmcecosse.

Am able to post pictures now.  

Is the engraved side always the Thrust side or is it manufacturer dependant?

I know there are people on here with much better knowledge than me on these things.

I am just questioning it as the previous fitment was engraving visible from the outer sides of the hub.


Option 1 - Engraved text facing in.  Ball bearings visible from each outer side of the hub with the spacer in between.  Thinner outer rim of bearing visible.

Image



Option 2 - Engraved text facing out.  Ball bearings largely hidden by curved metal bearing cage.  Thicker outer rim of bearing visible.

Image

Just want to be sure as I don't want the wheel to fall off!!!!

Thanks

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Postby MickEssex » Wed Aug 21, 2013 4:55 pm

ESM have a note attached to the wheel bearing listing.

Front Wheel Bearing Kit (Minor) *Includes Seal* It is very important that the wheel bearings are fitted the right way round. The thick side of the outer race should be fitted facing the inside of the hub.&edsp;
Non-Branded Bearing Kit Currently Used In The Workshops. They Have Not Yet Had A Failure With These And Are Happy With Their Quality.


** NOTE. We Have Had Random Issues With All Bearings Available In The Marketplace Since Early 2012**


http://morrisminorspares.co.uk/shop/pro ... 94d4b0e61a


Hope this helps
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Postby 73XTX » Wed Aug 21, 2013 5:42 pm

Option 1 then - looks good for me.

Thanks guys for the moment of clarity!

Rob.
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Postby bmcecosse » Wed Aug 21, 2013 9:57 pm

Look at the bearings - if they are described as 'C3' fit then reject them - C3 is too loose for car wheel bearings, but certain Companies have been supplying them......
 









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Postby 73XTX » Thu Aug 22, 2013 8:06 am

Thanks bmcecosse.

I've checked them.  They aren't marked C3 so looks good.  They are Emerson Rollway manufactured
Type -
Inner 7303B
Outer 7205B

Just need to get the old ones out of the hub now.

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Postby 73XTX » Thu Aug 22, 2013 6:20 pm

Getting the old bearings out and new ones in - Top tip....

Put the hub in the freezer for a couple of hours wrapped in a plastic bag.  

Take it out and then just knock the old bearings/outer race out with a suitable drift.

Then put the new bearings in the freezer while you clean up the hub.

Have a cuppa.

Then grease up the hub which will have warmed up.

Take the new bearings out of the freezer and gently tap them into the hub.

Remember to put the spacer piece in - I got so excited the bearings went in so easily I forgot it the first time...

Here are a few pictures of the bearings as they came off:

Image  These bearings had engraving on both sides but did have "Thrust" on the inside edges facing the spacer.


Image
The right way to fit viewed from the back.



Image
The right way viewed from the front.

Then pack them with grease before fitting the hub.

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Postby bmcecosse » Thu Aug 22, 2013 11:09 pm

They should remove/install easily without all the freezer carry on.......
 









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Re: Front wheel bearings - which way around

Postby Sleeper » Fri Dec 02, 2016 12:46 pm

Dear All
Sorry to bring up an old thread but the answer wasn't there,,,and no help in the manual...on checking the "impulse buy" have found ( amongst other things ) play in the FL wheel bearings,taking them apart and was ready to order new bearings ...but....were they fitted correctly,they are not taper but roller and the funny thing is that the outer bearing has only half an outer race ( see photos )



2016_1202wheelbearing0001.JPG


2016_1202wheelbearing0002.JPG


2016_1202wheelbearing0003.JPG


I would assume that the outer half race fits in the hub and then the inner race on the stub axle ( green plastic face outermost ) and it tensioned against the outer race ?

Thanks
John

P.S. I think they are these..

http://www.ebay.co.uk/itm/FIRSTLINE-FRO ... 0932638697
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Re: Front wheel bearings - which way around

Postby Rick1963 » Sat Dec 03, 2016 10:07 am

Hi, if there is play in the bearings then in my opinion the only option is to replace them, here is the ESM link, http://www.morrisminorspares.com/front- ... or-p830557

This thread details how to fit the bearings the correct way, those bearings you have look like you can't adjust them, there is most likely wear in the raceway faces and on the minor hubs there is no option to adjust the bearings.
Hope this helps.

Rick
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Re: Front wheel bearings - which way around

Postby Sleeper » Sat Dec 03, 2016 8:16 pm

Thanks all
New bearings ordered..

John ;)
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