HP 7906 spindle motor repair ??

So am I. I looked at the information on the Australian museum site. When I looked that he photos of the drive with the covers off I saw a normal-looking induction motor alongisde the disk housing nad thought 'what's the problem, jsut remove the through-bolts nad it'll come apart'. Alas upon reading the manual i realised that this was the blower motor and that the spindle is driectly driven by a brushless DC motor. And now a word of warning. Those spindle assemblies are not designed to come apaert. They will ahve been assembled with a press using special die tools. There may not even be a a way to strip it without damaging some paet (that is, theyre may be no way to apply the force needed where it is needed). Certainly the belt-driven spindles in some older drives are like that. The next thing is that there may well be a dust seal in the assembly. And it woun't be a conventional seal, it could well be a special magnet keepign a ferrofluid between the housing and the shaft. Sorting that out could prove 'interesting' too. -tony