Window motor stopped working (water inside) - how to rebuild
11-04-2011, 04:31 PM
#16
Drifting
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I basically did what is shown in the good old days photo. I didn't have my Dremel with me, so I wrapped the commutator in fine grit sandpaper and spun it in my hand. I then used a dental pick to clean the grooves and it came out looking new. I also reverse-wrapped sandpaper around the armature and put the armature inside the housing and spun it around to clean up in there. After that I blasted everything with De-Oxit.
The other problem was a little more interesting. I assumed that it would be the same as the drivers side problem, but after I soldered the wires, it still didn't work. A little troubleshooting revealed that the motor has a tiny thermal protection device in the end of the motor. If you are getting power to one connection on the end bell (the molded plastic end of the motor), but not to the brushes, this may be the problem. There is a little black block that is inserted into the end bell.
One craptastic thing is after I got it all back together, I realized I forgot to put that black rubber plug thing on over the motor arm. I'm sure I'll back in the door eventually, so I'll put it in then.
Also, at the end of the outer motor housing (where there is a lil' bump), there are two holes. On both motors I had, only one hole was plugged with that lil' white plastic hat-plug. Coincidence, or is one of those holes supposed to be open?
11-04-2011, 09:42 PM
#17
Instructor
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I believe the one I bought from Roger was a new one for a Mercedes, it fit PERFECTLY without trouble and cost less than or around $100 dollars... unless you like trying to get the old one to work and then possible stop working again, just go the easy route IMHO. Taking apart the door is not tough but does suck a bit...
sniper
sniper
11-05-2011, 04:01 AM
#18
Three Wheelin'
I think the whole idea is to repair whats broken rather than simply replacing it. Almost anyone can swap parts, but if you can fix the broken part, you are elevated to a whole new level of Motorhead Geekness!
11-05-2011, 02:59 PM
#19
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T_MaX, if you have the time God Bless you go for it, fix it...I however travel 90% of time for my job and dont have the luxury of repairing things myself. Somethings I have time to just swap out so I can enjoy my car...: )
