W124 sunroof jamming

[SilverSaloon]

hi

occasionally my 1994 W124 sunroof wont open very well - it appears to require some sort of greasing to allow a nice smooth operation.

does anyone know what/where to grease to bring it back to its best?

thanks

Derek

 

[mika]

Hi

i was concerned about this problem as i understand its complex and expensive to dismantle and repair . Ive had a few instances where it has stuck then worked on the second/third time of asking so,
I have put fairly large amounts of vaseline wherever i can apply it to the runners and surrounding areas - although i didnt find it very accessible - i used a small spatula
then wiped off the excess after opening and closing and repeating this a few times
...since then its not missed a beat...yet
im sure there is a better or recommended grease though

 

[SilverSaloon]

thanks. its got worse over time so wanted to ensure it doesnt sieze up completely and then i'll be stuck, literally!

 

[mika]

you could alway just tilt instead of slide hehe!

 

[stephen coy]

I've sprayed all the linkages/rails etc with silicone spray. Mine previously was a bit lazy - tilt needed a little push to help along. The operation is now pretty swift and smooth. My thinking is that grease or similar will likely attract dust etc. possibly creating a 'grinding' paste. I know MB sell a specific lubricant, so maybe the mechanism does need something heavier than silicone, although as I say it has worked well for me.

 

[SilverSaloon]

ptfe spray appears to be a good solution from a google search. i think i'll give that a try.

thanks guys.

my silver W124 also has the same problem but i've never got the sunroof to slide.... it tilts very rarely but never slides. this is why i want to nip the green car issue in the bud before it develops into a more serious issue.

i'm hoping the silver car can also be greased and the 1st slide persuaded with a hand push and spray at the same time....

 

[trapperjohn]

GT85 works for me. Comes with a little tube to direct it to the nether reaches.

Edit.

And yes I am referring to sunroof lubrication.

 

[GP801]

I think its perhaps a myth that they are hard to repair. We had a sunroof specialist sort ours - it was just a rubber grommet that had perished and dropped in the mechanism. He maintained they were pretty easy to work on.

 

[mika]

have i done the wrong thing using vaseline ?