1983 300SD Rear Window Sticking
 

When utilizing the window switch I can get the window to start moving down and then it kind of hits a snag and will not move smoothly. Then when I try to move it up it starts to go up but snags. I can actually pull it up to within 2 inches of closing and the switch then moves it the rest of the way up. So I am able to keep the window up and in a locked position for driving around.

So is this the moving 'J' slide I've heard about? Anyone else had a similar problem and can you point me in the right direction to make the repair? I appreciate your help.

Could also be worn/damaged teeth on the gear drive assembly. Sounds like the regulator has seen better days. Lube, repair, or replace.

Do you know where I can get some DIY instructions for getting to the gear drive assembly and/or regulator to make this fix? Appreciate the help.

get the door panel off and you wont be able to miss it in there. biggest unit in the door with a motor on it.