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  #1  
Old 08-24-2011, 04:23 PM
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Last straw with my W126 GEN II sunroof.

Hey guys,

I got in a fight with my sunroof for the last time today. Without removing the panel and the headliner, I couldn't achieve the photograph I wanted, so I drew it in MS Paint. I know on each side of the sunroof, there are sliding guide jaws that allow the roof to pop up and down.

-The jaw on the drivers side is broken, disallowing proper function of the tilt mechanism.
-Upon removal of the broken piece, I figured I was golden for sliding function.
-No dice; red part in diagram binds on the PASSENGER side, and is broken on the drivers side.
-Removed part; is it supposed to be not connected to anything within the sunroof mechanism? Mine was able to come out of the tilted opening (I am able to tilt the roof, go figure) without any tools or finesse.
-Blue part also binds on the passenger side; I assume this is the part that allows sliding function of the roof.
-Unbind the part on occassion, still no slide function; drivers side rear corner of the sunroof panel binds on the roof of the car, passenger side clears.

-Keep in mind, I have all this knowledge via a 3 inch by 3 foot opening of the tilted roof, so I rely on your expertise on the subject

Anyone have any ideas as to how I can get my headliner out (all clips undone, no clue how to get it out of the car), or even better, fix this thing? I've read the walk through for the W124, and I think that is only the start of my problems...


Thanks,


Carlen

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Old 08-24-2011, 04:25 PM
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Whoops, forgot my diagram. Hopefully it clears something up... I doubt it.
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Last straw with my W126 GEN II sunroof.-sunroof.jpg  
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Old 08-24-2011, 04:59 PM
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The sliding jaws also provide the forward and backward motion, if they're broken nothing works. Plan on replacing both.

Both were broken on my car, one had snapped completely in half so the whole panel was stuck. I was able to pry the interior lining off and wiggle it out carefully. I had trouble getting it to clear the rearview mirror. It's somewhat flexible so that helps a lot. It took some force at times.

I then removed the two "do not remove" bolts for the guide pins on the front. so I could lift the whole pannel up. That gave me access to more bolts so I could remove the panel from the sliding jaws.

Sorry if that's about as clear as mud. I basically kept taking things apart till I could remove the metal panel, then removed the chrome metal plates along the sides to get the pins out of the track, put them back on the panel, and re-assembled it according to the FSM.

BTW, nice paint diagram

-Jason
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Old 08-24-2011, 05:14 PM
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Quote:
Originally Posted by compu_85 View Post
The sliding jaws also provide the forward and backward motion, if they're broken nothing works. Plan on replacing both.

Both were broken on my car, one had snapped completely in half so the whole panel was stuck. I was able to pry the interior lining off and wiggle it out carefully. I had trouble getting it to clear the rearview mirror. It's somewhat flexible so that helps a lot. It took some force at times.

I then removed the two "do not remove" bolts for the guide pins on the front. so I could lift the whole pannel up. That gave me access to more bolts so I could remove the panel from the sliding jaws.

Sorry if that's about as clear as mud. I basically kept taking things apart till I could remove the metal panel, then removed the chrome metal plates along the sides to get the pins out of the track, put them back on the panel, and re-assembled it according to the FSM.

BTW, nice paint diagram

-Jason
Yeah the arm on the driver side broke two years ago and I finally did enough mechanical maintenance that I can focus on this monster now. The headliner seems connected to the smaller rectangular part towards the back; is that the case? I was fearful of breaking it, as I have a 4 year old headliner I don't want to replace, but I noticed the flex and if it can come out down towards the windshield, I'll do that. Do you recall how much the arms cost you? Based on my dealership estimation skills, somethin' like $150 a side?

And thanks for the compliment on my MS Paint skills; I went a little overboard on the interior detail. OCD will do that
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Old 08-24-2011, 06:46 PM
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When I fixed mine a year ago it was $100 / side for parts.
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.
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  #6  
Old 05-06-2012, 08:27 PM
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Quote:
Originally Posted by Solid Snake View Post
Yeah the arm on the driver side broke two years ago and I finally did enough mechanical maintenance that I can focus on this monster now. The headliner seems connected to the smaller rectangular part towards the back; is that the case? I was fearful of breaking it, as I have a 4 year old headliner I don't want to replace, but I noticed the flex and if it can come out down towards the windshield, I'll do that. Do you recall how much the arms cost you? Based on my dealership estimation skills, somethin' like $150 a side?

And thanks for the compliment on my MS Paint skills; I went a little overboard on the interior detail. OCD will do that
Hey solid snake. Thanks a lot for all your useful info on working on w126s. A lot of your advice has come in handy as I restored my "87 300 SDL. I was just wondering. I put in a new sunroof assembly in my SDL and it was all set in place with a new seal by an MB mechanic but he told me not to open or close it for a month and that it still needs "adjustment." This was 3 months ago and I haven't been able to contact the guy and I haven't opened the sunroof yet. I am worried as I don't want to open it without the experience of properly "adjusting" it. Do you know what he probably meant by "adjustment" and is it something you think an amateur like me could do on my own? Thanks so much Solid Snake!

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