Blower motor - brush replacement

[SJ]

From: "Dave C" <dconner at gmail.com>
To: <syljay at optonline.net>
Cc: <quattro at audifans.com>
Subject: Re: Blower motor - brush replacement


> Hi SJ,
>
> I read your writeup from last year and it left me wondering whether you
have
> anything to report re: brush replacement.  Did you do it?  Does it work
OK?
**** No, I did not do any more work on the electric motor.
1. The brush electrical 'tails' are crimped and soldered - bit of a job to
get them out.
2. I couldnt find replacement brushes . . the hints and leads in the
archives proved fruitless.
3. The armature was badly worn down in the center. I'm not sure how much
more useful life I could get out of it if I turned the armature to remove
the wear grooves.
4. Someone mentioned that after all the work to get the old motor out, it
didnt seem to be worth the effort to put in a 'fixed' motor with a suspect
life span.
5. I bought a new motor/fan assembly . .and its still in the box. The
original "cleaned" motor is still running. I'll replace it when it finally
dies . . .. which will not happen now cause Murphy is a chit.

>
> Anyone else done it?
>
> I'm wondering about the motor bearings also being worn out and maybe
simple
> brush replacement isn't enough?  Anyone done bearing R&R?
**** The motor is assembled via crimped and peened sheet metal parts.
I'm looking at the motor now. I guess one can remove the peened tabs using a
dremel tool to clean up the peened ends and take it apart.
The plastic fan cage needs to be pulled off the shaft to get at the front
bearing -- that should be fun.

> My local hardware store has various brushes available and new blower
motors
> are now well over $100... $126 at sjmauto.com is about the best price I
can
> find.
**** I went to all the local sources mentioned in the archives, looking for
brushes . . .they dont have jack chit.

SJ



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