Mavic Ksyrium bearings

[VamP]

Who knows how easy the bearings in Ksyrium's are to source and replace?

Easy, difficult or downright impossible?

 

[accountantpete]

Easy - they should be sealed bearings so knock the old ones out (no use any more so no need to be delicate) and then feed the new ones in delicately (you may need to improvise a tool - I just tap mine in.

Check what size bearings you have - there should be a code on the black seal bit of the existing bearings. Then do a rough measurement and ensure that the coded new ones match up to the old ones. Also check all three bearings (for rear) as there may be different sizes.

I order mine from a bearing retailer as they are usually common bearings and it's cheaper but you can get a bearing kit if you know the model and year of the wheels.

 

[VamP]

Easy - they should be sealed bearings so knock the old ones out (no use any more so no need to be delicate) and then feed the new ones in delicately (you may need to improvise a tool - I just tap mine in.

Check what size bearings you have - there should be a code on the black seal bit of the existing bearings. Then do a rough measurement and ensure that the coded new ones match up to the old ones. Also check all three bearings (for rear) as there may be different sizes.

I order mine from a bearing retailer as they are usually common bearings and it's cheaper but you can get a bearing kit if you know the model and year of the wheels.

Awesome, thanks!

 

[ColinJ]

Easy - they should be sealed bearings so knock the old ones out (no use any more so no need to be delicate) and then feed the new ones in delicately (you may need to improvise a tool - I just tap mine in.

Check what size bearings you have - there should be a code on the black seal bit of the existing bearings. Then do a rough measurement and ensure that the coded new ones match up to the old ones. Also check all three bearings (for rear) as there may be different sizes.

I order mine from a bearing retailer as they are usually common bearings and it's cheaper but you can get a bearing kit if you know the model and year of the wheels.

That's what I did for my MTB's rear wheel when its bearings seized so badly that I could barely turn it.

I decided to have a go at servicing the hub myself so I downloaded the service manual and looked up what bearings I needed. A quick search of dealers revealed that I would be looking at quite a lot of money for a pack of the official bearings so I bought a pack of 10 generic ones the same size from a bearing specialist for less than the official parts to do one wheel, and I have spares to do the front and rear hubs in the future.

I used a large screwdriver to tap out the old bearings, and found a nasty heavy steel seat post in my junk box which was just the right diameter to tap in the replacement bearings.

The only hitch came when I was nearly finished and discovered that I had one part left over!

I looked more closely at the exploded diagram of the hub and realised my mistake which meant that I had to carefully knock out one bearing, insert the spare part where it should have been and then finish the job.

The wheel runs beautifully now!

I took a long time to service the hub because I didn't know what I was doing but I will be able to do it much more quickly next time.