Noisy ST 251 HD

From: jpero_at_cgocable.net <(jpero_at_cgocable.net)>
Date: Thu Feb 18 19:20:18 1999

Date sent: Fri, 19 Feb 1999 00:47:45 +0000 (GMT)
Send reply to: classiccmp_at_u.washington.edu
From: ard_at_p850ug1.demon.co.uk (Tony Duell)
To: "Discussion re-collecting of classic computers" <classiccmp_at_u.washington.edu>
Subject: Re: Noisy ST 251 HD

> >
> > I have a noisy ST 251 hard drive. It sounds like the bearings.
>
> Are you sure it's the bearings? The noise usually comes from the earthing
> contact on the bottom of the spindle. Move it sideways slightly and see if
> that silences it.
>
> >
> > Is it heretical to think I may be able to lubricate the bearings?
>
> Very unlikely. There must be some kind of seal round the spindle to
> prevent dust coming up there. No chance of oil getting to the right
> places.
>
> -tony
>

Spin it up and watch that stepper motor centre, (you can paint a
soild semi-disc black with permanent marker, this easier to watch).
Is that noise like the low, "soft gritty" such as grinding corn by
hand on that platter spindle?

This is another leading cause of ST251x series killer. (That
includes ST277x, ST296x) because spindle hub design and whole
thing is very poorly designed and built poorly.

Jason D.
Received on Thu Feb 18 1999 - 19:20:18 GMT

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