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Well, I didn't take any pix -- don't have a digital camera -- but I could certainly give you a written blow-by-blow if you like. It's pretty simple, really.
You take the motor/fan assembly out from under the dash, then detach the rear plastic cover. The leads come off the motor via quick-disconnect hardware -- one is male and the other female so you can't mix 'em up. motor shaft out of the fan cage with a small drift. Then you're ready for the serious part.
The rear bearing carrier, which also holds the brush retainers, is staked to the motor casing. I used a file, some small Vise Grips and a screwdriver to loosen up the joints enough to remove the carrier without bending it too much.
Now to the brushes. One has a pretty easy connection to desolder. The other lead goes into a cylindrical connector that's a bit of a pain to deal with. I ended up drilling the lead out with a small bit and a variable speed drill at very low speed for maximum control. The solder and copper drill out quite easily, of course.
From there you fit the new brushes, solder in the leads and assembly is the reverse of removal!
If the commutator is a little notched it can be cleaned up by chucking the shaft in a 1/2-inch drill and running a file over it as it turns. I finished that job with some 1000-grit paper to smooth out the commutator surface. Also, a couple drops of oil on each bearing can't hurt.
The biggest challenge in putting the thing back together is restaking the bearing carrier to the case. I opened the jaws of my bench vise to the opposite ends of the case rested on them and the end of the motor I was working on stood up vertically. Then, with the bearing carrier fitted to my satisfaction, I used a hammer and cold chisel to stake it down. You stake it at eight points. The main issue to to make sure you've straightened any bends you introduced to the bearing carrier tabs by prying it out. There are four slots in the case where the tabs should fit like factory intended before you go to whacking.
I'm thinking of overhauling the blower motor in my coupe now. I'll try to take some pix at that time.
I've heard Murphy sells the brushes -- not sure what he wants for them but $20 sounds about right. He's making a little money; like I said, I paid the factory $4.17 each. I sold the remainder of my first run for exactly what I paid for them, and people urged me to order some more.
That entails a 10-mile detour for pickup, some bookkeeping, packing and shipping and the likelihood that I'm gonna be stuck with a couple pair. Hence the markup from $8.34 to $12 a pair. I don't plan to make a boat payment on this deal.
In fact, if there isn't enough interest, I'm gonna simply refer those in need to my rep at Schunk Graphite and let *them* get into the brush business.
Russ M
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