Rear ball bearing replacement

[becbunsen]

Hello
I would like to know what is the good meaning to place new roll cage in the rear upright. probably with press but i don't know if heating is necessary or not, or if another meaning exist.

Thank you

Julien

[ed_crouch]

Hi.

I think you mean pressing out the rear wheel bearing?

This is a tricky one: someone will be along shortly to advise, but basically they are two tapered roller bearings, and you would probably have to use a mallet and punch to punch the outer races out. You would probably need pullers to remove the inner races.

You will also need to buy or make new crush tubes, and you'll need a dial gauge to set the end float on the quill shafts, as the bearings are tightened up until the endfloat is all but gone. then the nuts are locked eith splitpins.

Ed.

[becbunsen]

Ed, sorry for my bad english(i'm french....)

I have remove older outer race (not an easy job...) and i must fit the new one but boring in the upright is very just. i think i must press in (hardly)and i'm asking if somes tips exists to make it more easyly.

I have buy a complete kit with seal and new crush tube. what is the good end float for the rear quill shaft?

Thank you

Julien

[ATE399J]

I replaced both the roller bearing cage (the easy bit) and the seats (in the upright) some years ago. I remember getting the old seats out did require the cunning use of a puller (and a little brute force - but only a little). To get the new seats in I used the old trick of putting the seats in the freezer and the upright in the oven (the wife was away for the weekend). The differential in expansion and contraction was just enough for the bearing seats to drop nicely into place without any force, tooling or effort!!

I think I changed the top rubber bush at the same time so that wasn't fitted when the upright went into the oven.

Hope this helps.

Phil.

[becbunsen]

Ok

if i have unterstand, i must put out my wife...

Thank you for the tip. i will try like this.

[Seabass]

I'm also going to be replacing the rear bearings on a Vixen S3. Who does a kit of parts to complete this task? I already have two new Timken 1988-1922 bearings but need two more, the crush tubes and probably grease seals although the old ones look newish. What are people thoughts on SKF or NTN bearings instead?

Thanks
James