power steering pump on CGT

[Geordie]

I've noticed that my power steering pump likes to make this nasty squeaky
grinding noise. I have found the problem to be the pulley, because if I
apply some oil to the area where the pulley enters the housing, the noise
disappears. So I figure the noise is a product of the pulley bearings. Is
there a way this can be overhauled, hopefully easily and/or cheaply. Can it
be fixed by me? Or is this thing non-serviceable?

The thing still works, so I will keep using it....but I'd really like to fix
the bearing noise once and for all. Any BTDT and the likes would be of great
value to me.

-Geordie--
'82 Coupe
Victoria, BC