[V8] Where can the Power steering pump leak?

[Mark Kalbskopf]

I am losing Pentosin badly and it's wet below the hydraulic pump and  
all over the compressor. (At least I think it's pentosin as the level  
is way down)
The accessory belt has become filthy oily and now I have a squealing  
sound from one of the pulleys.

Can the pump leak from the pump shaft end seal?

About a year ago, I rebuilt the pump and put those little O rings in  
all those cross marked caps.
I don't remember doing the shaft seal because I think I would have  
needed a suitable puller which I don't have.

Is the end seal a likely culprit, because I don't see it gushing out  
anywhere else?
The accessory bely acts like a spreader and throws the leaking fluid  
all around the front of the engine.

As the pump is $450, I'm not rushing off to replace it.

Mark
(Who is weary of repairs and went to look at a 1999 BMW 540i sport  
today!!)