sprocket bearing collar

[gafr]

Hi. Gafr here. Just replaced the rear wheel bearings and yhe sprocket bearing and ive noticed that the sprocke bearing hss a collar fitted. Theres no way that I can remove this colar to fit in the new bearing and I cant see wgst it does anyway.
Does this need to be put in because apart from me not fitting it in everything seems to be running ok?

[gafr]

Sorry about the spelling. Fat fingers on a little keypad

[MacV2]

Have a look at this.

Basically if there is a spacer or collar it is there for a reason & should be fitted.



I assume that you have removed & changed the bearing & that the collar is still in the old bearing.

Without the collar in the newly fitted bearing you run the risk of crushing the bearing when you tighten it all up, which will soon knacker the new bearing.

[gafr]

The collar im on about is marked as number 8

[MacV2]

The collar im on about is marked as number 8

Well if that is true it must of been fitted incorectly in the first place.

Looking at the diagram the spacer 8 fits in one side of the carrier & the bearing the other side.

I suggest that you free the spacer from the old bearing then fit it correctly in to the carrier.

Do you have a vice you can use ? If yes then open it up so that you can sit the old bearing across the gap with the spacer at the bottom, then try using a drift (I use old sockets as drifts as you need one slightly smaller than the hole in the centre of the bearing but big enough to catch the spacer ) & a bloody big hammer to knock it through. Some heat may help if you have a blow torch handy. I doubt you will hurt the spacer & it wont matter if you knacker the old bearing.

I cannot be held responsible for any mangled or splattered thumbs or digits with this method as described above, as you have already admitted to having fat fingers... so please be careful.

[gafr]

Cheers I have a go again. But its a right ba****d.

[MacV2]

Cheers I have a go again. But its a right ba****d.

Any joy ?

[gafr]

no chance at all, ive heated it, frozeit , walloped it and generally bashed the f**k out of it... no joy, so it looks like i"ll have to buy a new one

[sirch345]

Gafr,
Mac is right about this, I have some not very good photo's I took on doing this job, I'll see if I can find them and post back.

**EDIT**

As Arnie said "I'm back"

The photo's are not that great, but should give you a better idea.

First job is to remove the oil seal, so resting the sprocket and carrier across the jaws of my vice


Next job is to find a socket that just fits inside the inner part of the sprocket carrier bearing, take note the spacer you're trying to remove is thin, so the socket cannot be the same diameter as the wheel spindle.


This is what the spacer looks like (sorry about the poor quality photo, but you should still be able to see what it looks like from this


Next turn the s/carrier over and with a suitable drift (I used an old piece of galvanised water pipe) carefully knock the bearing out


HTH's

Chris.




Chris.