Originally Posted by crazybrit
I know Pyndon replaced his; he told me this was because it failed the "fingernail" test (could feel a groove). There is no wear spec in the manual for this, only for the crank end that rotates inside it.
Ya it certainly has noticeable grooves in.
What is the best procedure for removing the bearing and then installing a new one? Is the special tool from KTM necessary?
Also is this an indication of the condition of the internal crank bearings?