where to find Windshield sealant, non-hardening type... - Page 2 - PeachParts Mercedes-Benz Forum

Hatterasguy · #16 12-16-2007, 11:47 PM

FSM= Factory Service Manual.

In the procedure for the W126 you need sealent, I find it hard to beleive the W123 is that different. Maybe it is.

KAdams4458 · #17 12-17-2007, 12:32 AM

Quote:

Originally Posted by Bama1

...I try to stay as correct to orignal as possible... According to the Tri-Star Mercedes dealer, a dry-fit was the original build procedure for a 1982 W123. ...

I would be inclined to believe that someone at your dealership was/is misinformed. The FSM states non-hardening sealant is used both between the body to gasket seal, and the gasket to glass seal. While I suppose it's possible that they were factory assembled dry, the FSM states that sealant is to be used when the glass is removed and replaced. Having seen a few rear windows on W123 at yards, I can attest that they all have whitish goop in them upon inspection. It's fairly improbably that every car I've noted this on all had received replacement rear glass or seals at some time.

rebreath · #18 01-06-2008, 08:21 PM

finally done!!
Used about half of the sealant tube.put some in channel where glass sits in rubber and a bead around frame opening that window/gasket sit in.installed all trim before inserting.thought I was ahead of the curve when low and behold when all said and done,drivers side side trim popped out partway.It will NOT reinsert.Do I have to do all of this again to get trim piece to reseat?what could happen if trim piece is left out of gasket?only one of the three popped.
I will get to see in the AM if the new defroster actually works.lol.

KAdams4458 · #19 01-06-2008, 10:27 PM

First off, thank you for following up! If half a tube did the trick, then it makes sense that it only takes one full tube to do the entire car.

As for the trim, screwing with it once the glass is in place sounds like a recipe for disaster. Someone here with hands-on knowledge may be able to help, but I've never done MB windows before. I'd personally pop it back out and start over. Maybe that isn't required, though.

rebreath · #20 01-07-2008, 12:09 AM

only its the "popping out" part that is tricky.dont want to break the "new"glass.afterall only two elements of the defroster are out.......lol

whunter · #21 01-07-2008, 02:05 AM

Fastlane Specials > Special Order Parts

Windshield sealant, non-hardening type
0019893120 Windshield sealant, non-hardening type

mobetta · #22 01-07-2008, 10:22 AM

I've not done a rear window on a 123, but usually the trim acts to lock the glass in place in the rubber seal, and is installed afterwards.

Last year,on my front windshield, the tech used a rubber mallet to seat the trim.

I did have to have him return and seal it around the body- he did it dry the first time. to add sealant, he removed the trim, ran a bead around under the lip of the seal against the body, and re- installed the trim.(which I had taken to the garage and cleaned and straightened.)

This is what I have seen done.

also, when I did the front windshields on my stepvan, the center trim went in last. this was a rubber insert, and I bought a special tool to ease the install(after cracking one 3x4ft piece of windshield glass doing it the hard way) maybe try some silicon spray to lube the trim in?? worked in this application.

Hatterasguy · #23 01-07-2008, 12:00 PM

I don't know how the W123 is, but on the W126 you install the gasket on the windsheild, then put the trim in. If you wait until its in the car you are screwed.

If it popped out try tapping it in with a wood block and mallet, maybe heat the gasket a bit to make it softer.

rebreath · #24 01-07-2008, 07:07 PM

Quote:

Originally Posted by Hatterasguy

I don't know how the W123 is, but on the W126 you install the gasket on the windsheild, then put the trim in. If you wait until its in the car you are screwed.

If it popped out try tapping it in with a wood block and mallet, maybe heat the gasket a bit to make it softer.

tried that to the tune of misshapen trim piece.luckily I have another but i hesitate to do this again as it left me with a slightly "mashed" looking trim piece.as i write this I find I am thinking of hair dryer on high,a little something small tucked into the channel(waxed dental floss maybe) so that near the end when play is reduced,teasing out the floss might "peel" out the gasket allowing the trim to seat into the channel right......hmmmm.will try that and see if it works.....

leathermang · #25 01-10-2008, 11:09 PM

Quote:

Originally Posted by Hatterasguy

I don't know how the W123 is, but on the W126 you install the gasket on the windsheild, then put the trim in. If you wait until its in the car you are screwed.

I am pretty sure that Hatterasguy is correct.

When dealing with 3M ask for literature dealing with installing glass..they provided me with a handful of great information...

When using ' glass bedding compound' check to see if you need a primer for the glass... some cars now use the windshield as part of the roll over and body structure strength ( yeah, right ) so the glue up of the windshield is critical... thus requiring cleanliness and the primer with no fingerprints in between...

KAdams4458 · #26 01-12-2008, 12:49 AM

Quote:

Originally Posted by leathermang

I am pretty sure that Hatterasguy is correct.

When dealing with 3M ask for literature dealing with installing glass..they provided me with a handful of great information...

When using ' glass bedding compound' check to see if you need a primer for the glass... some cars now use the windshield as part of the roll over and body structure strength ( yeah, right ) so the glue up of the windshield is critical... thus requiring cleanliness and the primer with no fingerprints in between...

There's no need for glass primer here. The sealant is just that; a sealant. Now, if we were talking about an adhesive sealant, things would be different. Ahesive sealants, like urethane-based variants, didn't come on the scene until concerns about glass needing to be able to retain bodies in side of cars during accidents, and windshields were tasked with becoming critical to the structure of the roof, and were required not to pop out of cars during roll-overs.

The sealant in this case is merely used to form a water-tight bond.

rebreath · #27 01-12-2008, 10:58 PM

well i went to talk to the guy that put in front windshield.he says that trim goes into gasket(placing small pieces of tape-gorilla or duct-to hold trim in place until glass is seated in frame.soooo,with that in mind I pulled the entire thing out.cleaned it all very well and will attempt to install trim properly and reinstall glass.

KAdams4458 · #28 01-12-2008, 11:04 PM

Hey, congratulations! It sounds like you got through the hard part, and managed to get the glass back out without breaking it.

Be honest, now. You had a voodoo witch doctor helping, didn't you?

rebreath · #29 01-13-2008, 09:39 PM

no magic.darn always liked magic....
anywho,I just slowly "folded" the gasket back thru the frame.started at the drivers corner worked down side about halfway then across the top to the other side and down to bottom.back to other side to finish folding thru,and voila one windshield/gasket/trim combo loose for removal.

whunter · #30 08-29-2012, 11:18 PM

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