'89 760t sunroof

mtemart · Post by **mtemart** » 29 Jan 2010, 21:17

Hi again,
It's me, Marty with the '89 760t wagon that hauls ass.
Thanks for the solution on the sunroof problem concerning the wind deflector not collapsing during the final close of the roof.
Now, I need to address the problem of the right rear corner of the sunroof. When the sunroof closes all the way the right rear corner is about 1/4''-1/2" lower than the roof. The left side seems to seat exactly where it is supposed to.
The front of the roof seems to seat correctly, too. If I stop the roof to the point where both sides of the rear are the same then it leaves a gap in the front of the sunroof. And, as I said, to close it leaves a gap in the right rear corner of the sunroof.
It is the metal roof with no glass.
The roof hasn't been bent nor has the sunroof. I was able to tenderly, by using wooden slats to force the roof into proper position but as soon as I opened and closed it the problem still exists.
Also, and this next problem has me really stumped. I took the roof/luggage rack off to clean the gunk under the slats and a few of the screws that insert into those rubber grommets with the threaded ferrules
were just floating. The rubber had deteriated to the point that the ferrules weren't there. I was able to scrounge some from the local "Pick-n-Pull" but damned if I can get them inserted into the existing roof holes.
I hope one of you Volvo gurus can guide me with out having to jerk the headliner and insert them from below.
Thanks in advance...
marty

Post by **jblackburn** » 30 Jan 2010, 10:08

Hey Marty,

Apparently this program has nothing helpful to offer about 700-series cars at all.

But I did find this for the 850:

sunroofadjustment.pdf: (26.12 KiB) Downloaded 134 times

In an 850 sunroof (I'm not sure what was changed from the older models and what wasn't) there are 3 screws that can be used to adjust the position of the closed sunroof.

It sounds to me like if you can get it to close to where the rear is in the right position and the front down, you may be able to adjust the screw for the front and get it to close right the whole way around.

Or that may cause it to drop down again in the back, I don't know.

For getting the screws into that, I imagine it's a pretty tight space. I'm thinking a pair of needle-nose pliers and a right-angle screwdriver is how I'd go about it. I broke mine, and had a heck of a time finding a new one, but it looks something like this one.

If this doesn't help, hopefully one of the other RWD guys will know the answer!

Post by **billofdurham** » 30 Jan 2010, 12:25

You can get access to all the screws, mechanism and rail on the sunroof by removing the sunroof liner.

Put the sunroof into the vent position. Get a welding rod or, failing that, cut out the straight part of a wire coat hanger. Bend the end to form a small hook.
Pull the edge of the sunroof liner down at the end sticking up. There are two spring loaded hooks at the back of the sunroof, one either side, which are attached to the sunroof liner and hooked to the sunroof holding the liner in place.
Unhook them with your wire.
The sunroof liner can then be slid back out of the way under the roof and above the headliner. Don't push it too far back or you will only ever see it again by removing the headliner.
With the liner out of the way you can check all the bolts, screws and anything else in there.
It is possible some of the screws have worked loose allowing the corner to drop slightly. Any screws you do tighten should be treated with Loctite.
Also take this opportunity to remove all the grunge that will have built up in there.
Any lubrication should be done with a spray lithium based grease, after masking everything to avoid overspray.
Once you get the level right fasten the hooks in place with your bent wire.

I've never had any dealings with the rubber ferrules and the only thing I can think of is to dip them in liquid soap to help ease them into the holes. I don't think they will be any easier to insert from inside.

Bill.

mtemart · Post by **mtemart** » 30 Jan 2010, 20:11

The sunroof won't raise fully to the vent position. It does however raise enough so's that I can see the springs you are refering to. Is there something I am missing in your directions?
marty

Post by **billofdurham** » 31 Jan 2010, 12:14

Not at all. So long as you can see the springs and hook them off. You only need to get the sunroof liner out of the way so you can see all the works in there.

There is no adjuster to help lift the roof. One of the screws may have come loose allowing the mechanism to drop or there may be a part broken, hopefully not!

I did see a 740 where two screws had fallen out and were missing.

Bill.

tblo760 · Post by **tblo760** » 31 Jan 2010, 18:13

mtemart wrote:The sunroof won't raise fully to the vent position. It does however raise enough so's that I can see the springs you are refering to. Is there something I am missing in your directions?
marty

Bill is absolutely right about accessing the fixing screws,and it can be a fiddling job,which has to be apprached with patience.The 1st time I attempted to removed the 'flap' I was unaware of how to do it,and in the end I resulted to just disconecting the flap from the main slide.it then gave me the insight for any dismantling in the future.Once you have access to the fixing screws,(2 on each side,early models are philips & later are torque splines) you will be able to see the problem,and as Bill suggests the side at fault may have be come disconected.Let me know your progress,I've now dismantled quite a few since learning the correct way.

mtemart · Post by **mtemart** » 03 Feb 2010, 18:03

Well, finally had a decent day to work on sunroof problem.
You weren't whistling Dixie when you advised on the patience thing.
It took about 4 hours of delicately removing springs and rods and clips and spring pins and blind screws and c-clips about the size of this font to discover that my problem was caused by the breakage of the part that has a long slot and is hinged to the arm that allows the 'roof to pivot up and down. What a bitch!!
I also noticed, (hard to ignore), that the sunroof seal was dbr-(damaged beyond repair). So, I packed up the tools and headed to the local Pick-and-Pull junk yard. Found a 960 with a sunroof and decided instead of trying to rebuild the one on my Volvo and struggle with, (see above dis-assembly descriptions), to just take the whole darned thing home. Within 20 minutes I had the whole assembly, track and everything, removed. The cost? $48 including tax.
When I got home I removed track and entire assemby from my 760 and am now, well, tomorrow, going to swap the interior flaps and liners so's it matches my existing color, beige.
I think that, (in hind sight), the easiest and quickest way to work on a sun roof is to just take the entire thing off the car and fix what ever it is that needs fixing and simply screw the blasted thing back in place.
So, there you have it...another day in the life of a Volvo owner...
marty

Post by **billofdurham** » 04 Feb 2010, 07:39

I think that, (in hind sight), the easiest and quickest way to work on a sun roof is to just take the entire thing off the car and fix what ever it is that needs fixing and simply screw the blasted thing back in place.

I agree with that but possibly not everyone would feel confident doing it.

Thank you for the update.

Bill.