17 replies to this topic

[Ann-Wilson]

Hi folks, am looking for a little help.
I have a 1989 mini Mayfair which i am restoring. I have a 12 to 10 inch wheel conversion kit from minispares. Both front hubs have been taken off the car and the cv shafts to are disconnected from the hubs. I have managed to extract the taper bearings from one hub. Have left the other in to get an idea of how to put things back together:). Ok so questions are:

1. Should I assemble the bearing back into the hub properly by pressing or tapping the bearings back in without the cv shaft in place going through the centre. Or do I need to put them back together as the cvshaft goes back through the middle of the hub?

I also need to replace the cv boots, both inner and outer do I need to split the cv joint for this?
Sorry if these questions appear trivial....First time I have tried this..
Any help advice greatly appreciated.....

[danny79]

[bmcecosse]

Great video - but I can't agree with using a steel punch to seat the bearings/seals. A brass drift would be MUCH better..........

[Ann-Wilson]

Thanks Danny79 the vid is great...helped a treat.

Richard

[freshairmini]

I used a steel punch to remove them, was very careful not to score the hub. Then used a large enough socket over the bearing race and then tapped it in. It will apply equal force all the way round. Very easy to do, I was quite surprised when I did it.

[tiger99]

If you have not got a sufficiently large socket or other flat, circular thing, it is possible to use the outer race from the old bearing to hammer the new one in. Obviously, it is exactly the correct diameter, and very flat. Just make sure to cut through it in one place with an angle grinder, so that when it enters the bore of the hub, it does not jam and can be removed with fingers.

[TORZIEnJIM]

I use the 34mm hub but socket to tap em in.

[Ann-Wilson]

Just a quick question.....i have a packet of grease that comes with the bearing kit but if I need more can I just use normal grease...or is it a special type etc?

[tiger99]

Don't mix different types of grease, just in case they react and go all runny. Castrol LM, which is cheap, is suitable for filling the bearings, and everywhere else that grease is used on a Mini except CVs and pot joints.

[Ann-Wilson]

Cheers mate. Good job I asked was about to add additional as the grease in the sachets that comes with the bearings seems just barely enough.

[Ann-Wilson]

Thanks for advice so far....am a little confused???

In the Haynes manual page 239 diagram B it shows an additional spacer! On the inside of the hub, between the inner oil seal and the taper roller bearing! This is not mentioned in the above video and is also not contained in the mini spares replacement kit? Does this matter? I have the old ones from the old bearings, are they re useable?

Any help once again, much appreciated.

Richard

[Ann-Wilson]

And don't suppose there is any advice for a bearing that when inserted is a little loose? The outer race rotates in the hub! I guess that's bad and should not happen? Am I talking new hubs?

[james962]

If you have not got a sufficiently large socket or other flat, circular thing, it is possible to use the outer race from the old bearing to hammer the new one in. Obviously, it is exactly the correct diameter, and very flat. Just make sure to cut through it in one place with an angle grinder, so that when it enters the bore of the hub, it does not jam and can be removed with fingers.

Good tip, I like that.

[tiger99]

Loose bearing, try Loctite Bearing Fit, if it is only very slightly loose. Otherwise, it may have to be a new hub.

http://hardware.over...er-10ml_i115168

[Boycie]

A good way of salvaging a hub that has seen a 'spun' bearing is to use a centre-punch and hammer a few nibs into the hub housing, so the bearing outer is located a little tighter. Finish off the repair with some Loctite as above. Obviously this is a last resort operation but I've used it on various classics over the years and it has saved the owners lots of £££. In some cases, the hubs were unavailable or massively expensive.. Luckily, as Mini owners we are catered for very well as far as parts supply goes.