BSA Owners' Club Forum

The BSA Workshop => Singles => Topic started by: STEPHEN TAYLOR on 30 March, 2017, 09:22:24

Title: B33 main bearing circlip
Post by: STEPHEN TAYLOR on 30 March, 2017, 09:22:24
I'm replacing the main bearings on my B33. The outer drive side bearing has a circlip. The one fitted to the bike had a 'cut away' so that you could lever it out. When I tried to get it out the cut away and a small section broke of. Does anyone have an idea of how I can get the circlip out? I've tried drilling a small hole in the circlip but because it's hardened it just blunts the drill bits.
Thanks

Title: Re: B33 main bearing circlip
Post by: Bess on 30 March, 2017, 11:03:38
Hi,
     Try using a carbide tip drill, eg:

http://www.axminster.co.uk/proxxon-3-piece-tungsten-carbide-milling-bit-set-476993?gclid=Cj0KEQjw2fLGBRDopP-vg7PLgvsBEiQAUOnIXILltUbZUI3YiTLbeivffbxhBgM3YQTl8TMDszEmoCUaAj0J8P8HAQ

After drilling I would ensure the clip is free to rotate in its groove before trying to remove with circlip pliers, it may be seized or have sideways pressure from the bearing.

Good luck..........
Title: Re: B33 main bearing circlip
Post by: STEPHEN TAYLOR on 30 March, 2017, 19:29:11
Thanks- I should have thought of that!
Title: Re: B33 main bearing circlip
Post by: Bess on 30 March, 2017, 19:52:33
Hi,
     Your welcome.

 I have struggled in the past for hours with sharpened screwdrivers and O ring removal tools.  I have a Maplin rotary tool that has come in handy when using the carbide bits.

Hope all goes well...............