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Alrighty,
Anyone ever replaced the front bearings in a Mavic Aksium disc - centrelock?
Searched the Mavic site for the part number & apparently I need 2 x 6804 for the front, which corresponds to the bearing that came out of the non disc side - the non disc side is another matter though - the bearing is too big to physically fit in that side of the hub shell... what is going on with this buggering thing?
Bearing lined up with non disc side:
Bearing lined up with disc side:
The disc side bearing was completely destroyed during removal so I have no way of checking exactly what it was - this was before I noticed the problem here, am I supposed to bash both bearings in from the same side here? am I going mad?
Cheers,
j
am I supposed to bash both bearings in
Even if they are both from the same side, ideally don't be bashing them....
why is there a gap around the top bearing?
lower pic too blurry to see whats happening
Looks like those Mavic hubs have some bearing preload adjustment on the disc side - have you removed all of the gubbins to do with that?
Can't really see from the pic, but is there some sort of axle cover you haven't removed?
Have you accounted for all these bits during disassembly? I think this is the right one.
How bad is the old bearing?
Even if it has fallen apart, you should be able to measure the outer race and the inner race,
to give you a idea what it was.
The top pic has the bearing resting against the bearing seat i.e. inside the hub shell - had already been removed so didn't want to push it back in again for the benefit of a pic
The lower pic shows the bearing (silver) sitting on top of the hub shell (black) on the opposite side - it's pretty much the same size as the outer shell at that side - the black part directly below the bearing is the edg eof the hub shell with the centrelock splines below that
I'm stumped - all Mavic's tech docs show either 2x6804 bearings or 2x6002(?) for the earlier models - none have different bearings in each side
I replaced bearings on a Mavic front wheel recently, both were replaced from one side.
When the bearing separated did you remove the outer race from the hub shell?
I think there were 2 circlips and a funny wire clip, something like this
If you have the remains of the old bearing you can measure the ID/OD/H. ID and OD can be measured from the axle and hub, H can be more tricky to check.
All the preload bits - wavy spring & circlips etc. are on the non-disc side, these are definitely all off i took a picture of them all so I would remember which order they went back on - the axle assembly then taps out from that side.
The old disc side bearing was totally shot - it disintegrated upon removal before I found the issue so it's in the shop bin in fragments
bigyan
I replaced bearings on a Mavic front wheel recently, both were replaced from one side.
When the bearing separated did you remove the outer race from the hub shell?
Ahaaa - I was wondering if they had to be pressed (walloped) in from the same side - suppose it makes sense if the centrelock splines reduce the outer diameter of the shell at that side & the 12/15mm(?) axle reduces the available inner height available for the bearings to occupy...
The bearing outer may well be still in the shell - will pop down to the shop & check, makes sense if it was against the lip & had nowhere to go... there were a couple of internal circlips in the axle - I take it the axle is a uniform width all the way through & the circlips act as stops for the bearings once they're in place, makes more sense now - will get back onto it!
Cheers all!
J