I purchased an old '89 VFR 750F that someone "fitted" tapered roller bearings on the steering head shaft assembly on the triple clamps.
It was a very poor job (odd cup and cone from different brands in one instance) and the bearings were both showing "marks" on the rolling surface.
I have just installed new replacement bearings and now wonder what torque to do the adjusting nut up to, as I am aware that roller bearings will skid rather than roll if they do not have sufficient preload. Learning now that the factory bearings used were ball race type has left me with the questing "What preload should I use - or do I just add a fudge factor to that stated in the service manual for ball race bearings?"
In theory tapered rollers should be better and last longer - but only with the right amount of preload?
I did check service manuals for later models but they all seem to still just use ball race bearings, so no help there
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Skipper
I purchased an old '89 VFR 750F that someone "fitted" tapered roller bearings on the steering head shaft assembly on the triple clamps.
It was a very poor job (odd cup and cone from different brands in one instance) and the bearings were both showing "marks" on the rolling surface.
I have just installed new replacement bearings and now wonder what torque to do the adjusting nut up to, as I am aware that roller bearings will skid rather than roll if they do not have sufficient preload. Learning now that the factory bearings used were ball race type has left me with the questing "What preload should I use - or do I just add a fudge factor to that stated in the service manual for ball race bearings?"
In theory tapered rollers should be better and last longer - but only with the right amount of preload?
I did check service manuals for later models but they all seem to still just use ball race bearings, so no help there
Any qualified suggestions appreciated
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