RE: (ET) lift motor repair

["Markus Lorch" <mlorch vt edu>]

Hi,

I would go and get me a replacement motor from the junk yard.
For the brushes it doesn't matter which side you get.

See my page at: http://markus.lorch.net/et/lift-motor.html

I don't think soldering is a good way to attach a wire in these
motors as it may get pretty hot. I crimped my connection that
I had to make for the ground replacement. 

In any case if your motor is fine I would use the old motor
with the brushes from the replacement. 

I had to pull my motor myself out of a wrecked car on the junkyard
but got it for free. (the guy thought it was broken as he hooked
up the two field wires to a 12V battery and nothing happened) He 
should've hooked up one field wire to the battery and ground the 
motor case but neither of us realized at the time. :) On the way
home I went "duh, of course" and could hardly wait to try it 
again in my garage :)

Markus

> -----Original Message-----
> From: elec-trak-bounces cosmos phy tufts edu 
> [mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of 
> et jpjt net
> Sent: Wednesday, March 02, 2005 10:08 AM
> To: elec-trak cosmos phy tufts edu
> Subject: (ET) lift motor repair
> 
> 
> I've now got two front lifts with non-working motors.  (and 
> zero working
> ones.)  I've never repaired an electric motor before but 
> figure I've got
> nothing to loose here.  So I took apart one last night and found the
> brushes worn almost to nothing, and the wire to one brush disconnected
> (looks like it arced off, maybe caused by the brush had worn 
> down to where
> the wire was connected).
> 
> The fragment of brush I removed had worn to a triangular shape, but it
> seems to travel in a holder about 1/4" square.  I don't know 
> of any retail
> sources for motor brushes. Is there an online source anyone would
> recommend?  Will a brush like this typically come with a wire 
> attached, or
> will I have to rig something?
> 
> Is the junkyard a viable source?  Mid-70s GM drivers-side power-window
> motors?  
> 
> Any other advice?
> 
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