PDP11/44 update, dead wierd fan (35VAC, 75Hz)

From: Tothwolf <tothwolf_at_concentric.net>
Date: Thu Dec 19 17:15:01 2002

On Thu, 19 Dec 2002, Tony Duell wrote:

> > on the _proper_ way to solve this problem. From memory: all that you
> > need to do is disassemble this fan, and the other fans, soak the
> > bearings in mineral spirits to clean them, relubricate the
> > bearings/bearing race with white lithium grease and reassemble the
> > fans. Do this with all of the fans, working or not.
> >
> > Tony, if you're reading this, is my memory about what to use for that
> > procedure correct? ...somewhere I've still got my notes/e-mail from
>
> Yes, it should be fine. I used what's called 'white spirit' in the UK to
> clean the bearings (this is a paint thinner/brush cleaner type stuff, I
> have no idea what it's called elsewhere). I lubricated them with high
> melting point grease (Castrol LM), but any bearing grease would be fine.

It's often called mineral spirits here in the states. It can be purchased
cheaply in large cans at any hardware/home center type store.

One nice property when using it as a solvent cleaner, is that the "dirty"
thinner can be put in a glass or metal container, and the grease/dirt, etc
will settle to the bottom.

-Toth
Received on Thu Dec 19 2002 - 17:15:01 GMT