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Old 04-22-2003, 12:03 AM
Emu Rancher
 
Join Date: Mar 2002
Location: Washington, DC
Posts: 664
finally fixed passenger side window

I've been posting about this for the last week or so but I resolved the problems and i just wanted to let people know how who may be in the same situation. The car is an 83 300sd
This is a really long post so prepare yourself.

The front passenger window died on me in the up position. When I hit the switch the dome light dimmed and i heard one click come from the motor each time. I took the panel off and unbolted the regulator and everything which i didn't actually have to do. If you find yourself in this situation, you will be best off feeling behind the window motor for three bolts. Take these bolts of and then pull the motor but keep it connected for the meanwhile. With the motor pulled push the switch again. If nothing happens this is your problem. I disconnected the motor and took it all the way out. I opened the motor up which was held together by two screws that requred a hex key to remove. On the inside, one half of the motor is a corksrew type asembly and the other half is a plastic gear. There was a lot or crap in their and I just got some degreaser and cleaned it all out.
After you maked sure everthing that you can clean is taken care of spray some wd40 into the half of the motor
with the corkscrew sticking out into both ends. Do the same to the other half. After you've done this, get some
grease, i used bearing grease and greased the corkscrew part. After this put the motor back together then hook it back up to the power and see if it works. If so its time to put it back together which is the hard part. Since the regulator is spring loaded, you have to hold it in a certain position to get the motor and everything back in there properly. Just mess with it and you'll get back in. Hook everything back up and you should be good to go.
__________________
W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.
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Old 06-09-2003, 09:17 PM
Bobl84
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Posts: n/a
Thanks for the advice but I did take the motor out and also disassembled it. The brushes were almost shot and the armature was wearing against the magnets. One thing I found out though was that it is easieer to get it back together if you remove the access plug (located at the top of the gearbox directly above the worm gear shaft). Use a small hacksaw to cut a slot in the top of the wormgear shaft (for some reason it's plastic coated). Then when you insert the shaft into the gear box you can stick a screwdriver into the access hole and turn the wormgear into the gearbox. If you don't do it this way, there is no way to hold the wormgear shaft while inserting it into the gearbox. You have to be able to screw the shaft into the gearbox to get it in the gearbox.
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