5k heater motor

[Robert M. Shydo Jr.]

Blower motor on my 5ktq gave out soon after I bought it, but hasn't really
been a big deal until its been chilling in the negative temperatures here
for a while, heated seats don't do the whole job and I've had to keep
scraping the inside of the windshield because condensation from breathing
made it impossible to see out.  Checked the voltage to it, its good.
Sprayed contacts with cleaner through the hose on the motor and nothing. 
Played with it a bit and couldn't get anything to work, until finally out
of frustration ended up stabbing it with a screwdriver.  Strange how that
gets it to work.  So now I wedged a bolt in it where the screwdriver was,
hooked the hose back up and everything is good.  Almost like the brushes
somehow went out of alignment or it is now using a different part of the
brushes (if an edge was formed).  Doubt this is a permanant solution
though, any chance at all the brushes can be swapped out without pulling
the motor (even if it takes surgical precision)?

Rob Shydo
'87 5ktq driver
'86 4ks rally beater