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Old 08-09-2018, 09:15 AM   #1
tobydmv
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Default 780 Sunroof seal available?

1st time poster, I have a 1989 780 with a broken sunroof seal. I cant find the part anywhere. Rain is leaking into the cabin and ruining the headliner. Do you know if there is one available or do I need to try and retrofit generic weatherstripping? I read a couple threads about cleaning the drain tubes but not sure where they are. Thanks for the help.
Toby

I think these are the part #'s
Sealing strip
Part Number: 1376082
This fits your 1989 Volvo 780
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Old 08-09-2018, 09:49 AM   #2
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Can't help with the seals but there are 4 drains located at each corner. Front 2 are ez back ones are not. Front ones exit at the a post near the door hinges. Back ones are under the bumper cover extensions. Open the roof. Locate the front drain holes. Pour some water into the holes. Observing how much comes out the drain tubes. For the rear just pour it in the channel. Don't go crazy with the air gun as the drain tube might blow off.
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Old 08-09-2018, 04:14 PM   #3
VB242
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^this clean the drains
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Old 02-22-2019, 07:23 PM   #4
skylerjoseph
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Default leaking 780 sunroof

I have two 780's both sunroofs leaked. Cleaned out all the drain holes and had good flow, still leaked. Finally realized the water wasn't coming through the seal, it was coming from between the glass and the metal frame the glass is attached to. Used some clear silicon for bath and shower and ran a fine bead where the glass meets the framework on the inside of the sunroof. No more leaks, did this to both of my Bertones.
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Old 02-22-2019, 07:42 PM   #5
M.H. Yount
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Had a good bit of success using the nylon/plastic weed-whacker cutting chord (the larger diameter) and pushing it down the drains to clear them out. As with any approach - have to be careful to not do something that will dislodge the tube from it's "nipple".
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Old 02-23-2019, 01:45 PM   #6
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I had a '91 780, but I don't remember if it had the glass moon roof. Now when I bought my '96 960 it does have the glass moon roof. After a good rain it would leak water especially during turns . I did seal on both of the seals. 1 on where the glass met the rubber seal, and 2 where the rubber seal met the roof. I'm thinking it would have sealed had I just done it where the glass met the rubber seal. The drains were not clogged. I sealed both the inside perimeter (glass meets rubber) and also the outside perimeter where the rubber meets the metal roof. I disconnected the sunroof switch so it wouldn't actuate the moonroof and rip off my seal. It's held for 5 years without a drop. I don't use a sunroof anyway. If I use it at all on my other cars its at night. I'm thinking I would probably have gotten by just doing the inside diameter where the glass meets the rubber seal.
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Old 02-23-2019, 02:52 PM   #7
DET17
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Quote:
Originally Posted by M.H. Yount View Post
Had a good bit of success using the nylon/plastic weed-whacker cutting chord (the larger diameter) and pushing it down the drains to clear them out. As with any approach - have to be careful to not do something that will dislodge the tube from it's "nipple".
Great tip, Mr. Yount. All that NATS training wasn't wasted!
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Old 02-23-2019, 04:18 PM   #8
ZVOLV
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You need to clear the drains.
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Old 02-25-2019, 02:06 PM   #9
VB242
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Quote:
Originally Posted by ZVOLV View Post
You need to clear the drains.
You would think that would solve the problem but my 780 also leaked between the actual glass and the frame. Silicone has solved 99% of the problem except the tiny leak that dripped on my girlfriend after I had assured her it wouldn't leak on her.
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Old 02-25-2019, 02:43 PM   #10
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On my 780, my sunroof suffered the same failure mode.

Drains were perfectly clear, leak started at the rear of the sunroof at the glass to seal interface in heavy rain, which worsened over a short time.

Seals are still available out of Europe for around $265US. I defaulted to a new seal to eliminate any potential for future leaks.

Silicone will afford a temporary solution but will degrade/fail in due time. You should be using a PUR or two-component automotive glass sealant to ensure a near to permanent repair if you chose to not replace the seal.
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