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Thread: Mk3 sunroof and other sunroof repair observations

  1. #11
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    MikeVR6-yes I'm on there, joined a few months back.

    There's a MK3 unit on eBay I'm going to buy, so just checking it fits. My mechanism has been repaired before but needs a little adjustment.

    Fraser
    Classic Green Storm Turbocharged

  2. #12
    Super Moderator davidwort's Avatar
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    I'd imagine very rare to find now but the B3 passat estate glass roof has the best profile to suit the Corrado roof IIRC, I remember extracting one from a scrap yard once
    my 1990 16v thread

  3. #13
    Is it me??! I've embarked on the repair of my sunroof and from what I can work out the very problem that Andrew highlights with the small chrome pieces snapping has already happened on my roof and this is what I'm working to fix.I have replacements chrome levers and I'm all set to refurbish the sunroof it only i can get to it!! I was hoping to do this with the roof in situ, but I've hit an early snag.

    To gain access I need the inner sunroof heading panel out of the way, but I can't seem to get it out.

    Right now, the situation is that the inner sunroof headlining stays flat when I manually tilt the roof (went the manual route to avoid any potential damage to the steel roof). The inner panel does not seem to be linked to the sunroof mechanism, I guess because the chrome piece I'm seeking to replace is broken/missing. My understanding is that I should be able to get the sunroof heading panel out and Andrew gives some good directions (see below) but no matter how I try the headlining panel will not shift. It seems to be pinned down at the front of the roof. Am I doing something wrong, should I take out the car's entire headlining or any other thoughts appreciated
    Regards
    Red


    Another tip is to treat the blind with the utmost care. It's attached to the mechanism by two little arms which are what run up and down a groove on the top of the blind and move it when in tilt mode. These are VERY fragile and care needs to be taken when removing the blind for whatever reason. I found the safest method is to have the roof in full tilt mode and carefully push the blind towards the back of the car by pressing on the blind on the edge that is now available because the inner section has been raised (I can't see why VW made a special tool for this that Edd China used). Dont push too hard as the raised piece of blind will hit the roof skin when it releases. Then very carefully make the blind flat (i.e not in tilt mode) and keeping it in position in the tracks of the mechanism, slide it out of the way. To refit, with the roof still in full tilt but sunroof panel not in place, if the blind isn't already in the mechanism you can slot the blind in from the top (I do it this way as means the mechanism is lighter when offered up to the car and prevents the blind getting dirty/damaged), it's tight but it will go in , then (usually once you've fitted and adjusted your sunroof panel) you just need to guide the blind gently towards the front of the car by sliding it along the tracks, no need to raise it manually into tilt mode as when it mates with those fragile arms it will start to raise by itself. When nearly all the way forward you will need to apply some more effort so the spring clips on the blind mate with the rubber coated prong mounting on the mechanism. It is essential this connection is secure as if not, the blind will detach from the mechanism when the roof is being closed and guess what? Yep those flimsy cast arms break off. How do I know? Yep, it happened to me but luckily my old Corrado roof failed in the same way but on the other side so yes I had to strip it all down again and swap the bits over.
    I had tested it thoroughly but got caught out as when I put the headliner seal in place, it increased the resistance of the blind as it moved along the track and it stopped in around the half way open position while the rest of the mechanism continued towards fully closed.
    It's best to practice refitting and removing the blind a few times before you put the sunroof panel in place as it will be the last thing you do once you've tweaked the sunroof panel's adjustment.
    A final tip is if the rubber cover has worn on the prong where the blind clips onto the mechanism, heat shrink does a great job of replicating it.

  4. #14
    Solved my own problem! I thought you needed to push back and up to take the liner up and out; nope int is straight backwards under there roof! Doh!

    Sadly tunes out the piece male piece that those wee chrome actuators go on has sheared off completely. So having sourced a spare item there is nothin to fit it to. Fortunately in my collection of spares I have an entire roof cassette so a full change it now on the cards. In cleaning it up,a small round o ring was laying in the channel. see Andrew referencing an O ring, but where did it come from?

  5. #15
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    Now looking to get this sunroof working again. I have the headlining out and the lid out. I have managed to purchase a new slider. I've fitted it but when manually winding it back I noticed that both sides are not going back at the same time, one is about an inch ahead. How do I get them to be set equally?

    Regards Fraser
    Classic Green Storm Turbocharged

  6. #16
    I'm unsure from your description if you have taken the roof out completely, I found it much easier to set it all up off the car.

    When inserting the cables (the slider mechanism) push both cables fully forward and use plenty of silicon lubricant, not ordinary grease, you will need to take the motor off, both sides should line up equally. If you have done this, then this is the correct setting as far as I can establish. It is possible that the replacement cable you are fitting is itself defective. I have found this with secondhand near side cables. Even though a cable may be complete, it seems that the unit can be worn in parts and this can cause the two sides to rise out of synch, which is very frustrating. To overcome this, I have replaced most parts with items from a Golf Mk 3 sunroof. Not all the parts are into-changeable (the piece with the chrome rocker is not if you want to retain exactly the same functionality). I hope this is some help,
    Regards G



    I have found that when changing the cable mechanism (the slider I'm guessing from your description) i

  7. #17
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    It's still in the car, I have however been messing around with it at times with the motor out. If the mechanism is in the car and I remove the motor can I then line both sides up or do I need to remove the whole unit from the car. I'd rather not remove the whole unit.

    Fraser
    Classic Green Storm Turbocharged

  8. #18
    Fraser, it's surprisingly easy to remove the whole cassette unit, it is just 8 nuts (if i remember right) and you gain far better visibility. It also makes it easier to de-grease and re-grease the unit which should make it run better and easier, which will be less stain on the motor. Having cleaned mine up it really needed cleaning. If you go down this route, prepare to get filthy, old clothes and plenty of floor covering!!

  9. #19
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    All sorted, I removed the motor that then let me adjust both sides to be in alignment with each other. All good now.

    Fraser
    Classic Green Storm Turbocharged

  10. #20
    Good news Fraser, glad to hear you got it sorted

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