PeachParts Mercedes-Benz Forum - View Single Post - Sunroof partially opens and closes...123 CD

rcounts · #13 08-20-2008, 06:29 PM

Quote:

Originally Posted by gcinque

I finally got around to work on the sunroof issue I'm having, I need to adjust the sunroof to open evenly.

When I open the sunroof the driver side pulls more than the passenger side. I can open the sunroof if I use my hand on the passenger side to help it along otherwise it opens only 2 1/8 inches on driver side, 2 inches in the middle and 1 3/4 in. on the passenger side.

Any suggestions on what to look for would be appreciated.

Sounds like it is hanging on the passenger side track. Have you cleaned it out REALLY well and re-lubed it with white lithium grease spray? I tried using regular grease on mine at first and it was too thick makinfg the roof open/close really slowly and "hang" intermittently. Have you also adjusted the nut on the motor shaft like Frankenbenz suggested? That nut adjusts how hard the motor can pull before its clutch starts to slip. You want it adjusted to where when the roof stops moving in the fully opoen of fully closed position, the motor continues to turn (clutch slips) but slows down more than when the panel is moving. DO NOT OVER-TIGHTEN IT to where it stalls the motor when it stops moving. This can damage the motor, the gears, the cable, or (in my case) the cable housing (the previous owner did this to mine - just kept tightening it as it got sticker and slower and messed up the cable housing)

BTW, I never saw your thread until today or I would have told you that while you can't completely remove the headliner with the roof open only a couple of inches, you CAN pull the front edge down enough to get it to unclip from the roof panel and then slide it back into the rear section of the roof out of the way - giving you access to the mechanism. Once you do that you have much better chance of getting the roof most of the way open to where you can slide the headliner panel forward and out. You can even detach the headliner panel with the roof fully closed - I did - by slipping a very thin-bladed butter knife between the front edge of the headliner panel and the front edge of the roof opening and prying it down far enough to get my fingers on top of it and then pulling down on it enough to unclip it from the roof panel and slide it back. You have to be very careful not to damage the headliner vinyl though...