Drilling holes lubes only 1 bearing . 
If you are trying to save the old blower, you need to lube both bearings. 
That means dash removal.

Then, you drill a small hole thru the plastic fan near the shaft, and drip or spray lubricant there where the shaft is.

 Remember to fill the oil with an approximate amount of sealant close to the amount drilled out to maintain fan balance

Robert
1982 Westfalia

--- On Mon, 4/8/13, Stuart MacMillan <stuartmacm@GMAIL.COM> wrote:

> From: Stuart MacMillan <stuartmacm@GMAIL.COM>
> Subject: Heater fan CHIRP!
> To: vanagon@GERRY.VANAGON.COM
> Date: Monday, April 8, 2013, 10:52 AM
> It's so loud and high pitched that
> it's painful to use the blower, even with
> my reduced hearing.� But, as I continue to, it's
> becoming less frequent.� Do
> these things ever fix themselves?� It's probably�
> dry bearing or worn
> commutator/brushes, but with only 140k on it (an '85) it
> doesn't seem like
> it should be worn out since my '84 worked fine for 20 years
> and 225k.
> 
> 
> 
> I'm tempted to shoot some WD-40 into the intake, but I'd
> probably regret it.
> 
> 
> 
> 
> Stuart
>