Doing the Blower Motor Shuffle

[SJ]

> From: "Alex Kowalski" <hypereutectic1 at gmail.com>
> Subject: Doing the Blower Motor Shuffle
>
>
> I've done Scott Mockry's electrical tests and the 12V power, control
> head voltages and grounds are all in spec.  So it's got to be the
> brushes/commutator, which fits the intermittency problems I've been
> having.
> I'm going to try some of the archive's amended procedures for removing
> the motor that don't require taking the airbox apart and instead
> recommend hacksawing away some of the ductwork to remove the motor and
> squirrel cage.  I'm not a concours purist at this point, and I'll
> gladly accept a little ductwork and tape under the plenum cover
> instead of 6 hours pulling and swearing and snapping brittle plastic.
>
> Alex Kowalski

**** Try cleaning the motor brushes first.
You can get in there and clean the top brush with WD-40, and use a pick to
move the brush up and down.
The bottom brush you cant get at, but if you spray enough WD-40, the liquid
will run down and around the bottom brush.
Let it dry for about an hour before using  the motor. I used a hair drier to
help things along.

The intermittant operation is caused by the worn brushes not making contact.
The years of carbon dust and oils make a stickly, gummy substance around the
brushes and they stick in their brush holders. The WD-40 will dissolve the
gum and free up the brushes.

I cleaned my brushes about 3 years ago, and the motor is still running. I
bought a new motor at the time . .and its still in the box.

Give it a try.

SJ