I was able to reinstall the rear window/gasket into the hardtop yesterday, almost an all day ordeal!!!
I purchased this product from the local automotive glass shop to seal the glass to the inside of the rubber seal.
It is basically liquid butyl in a tube. This stuff is very sticky, hard to tool. I preheated the tube of goop with a heat gun, this made application with a caulk tube easier. I would highly recommend preheating this product. The FSM recommends a 3M product but that stuff is no longer available.
I would also recommend great lighting, hard to see inside the seal while inserting the goop. I applied this much all the way around, probably about the right amount, more on this later.
This stuff is made out of the same goop that the 3M caulk strips are made out of, with all the pluses and minuses that that entails. Very sticky, never dries, a little stringy. I will say the caulk tube version is much easier to apply compared to the strip version.
I covered my work bench with paper, placed the window rubber seal exterior side up with the outer LOCK disengaged, carefully inserted the glass into the seal, starting at one corner and then working around the perimeter. Worked out well, a little bit of goop squeeze out, more on this in a bit.
I purchased this rope in an attempt to try the FSM rope trick. Fits inside the seals exterior groove channel well.
Ran the rope around the outer seal groove channel. But, working by yourself, the rope will want to fall out the bottom of the seal while moving the glass from the bench to the vehicle. Also, working by yourself, the excess rope "pull handles" can get in your way when inserting the glass/seal assembly into the hardtop opening. So, I used some tape to help secure the rope to the exterior sides of the glass.
That is all fine and dandy. So, I get the glass/seal assembly into the cab of the Scrambler, crawl in there with it, and attempt to install it the "correct way", i.e. get it started from the inside, then pull outer seal lip over the fiberglass top with the rope. Tried for about 30 minutes and gave up. Was NOT going to happen. Maybe with a helper, maybe with a new seal, maybe.......
So, I did it my way, worked out fine. No pictures, this is what I did.
Put glass /seal in the bed
Crawled back there with it
Installed glass/seal into opening from the exterior
Started at the bottom, got the inner lip of the seal installed correctly all along the bottom/interior side
Worked my way around, on the interior, working the inner seal lip over the top opening
Got about 90% of the interior seal lip installed correctly then started working on the exterior seal lip
Again, got the exterior about 90% installed
Back and forth, inside to outside, got the seal right with the top, interior and exterior, except for about 2" in one corner
At this last corner, had to push on glass FIRMLY to get the seal to "roll up" correctly on the intetior/exterior flange AND roll back correctly over the glass at this one 2" spot
Probably not the correct way, but it worked. Tools I used:
I used the wood paint stirring sticks to work the seal flange over the top. The wood will not cut the seal or damage the fiberglass/paint. Get plenty, you will break them. I used the plastic tools to work seal flanges into the opening. Again, no damage to the seal/top. I also used the metal prybars: I started the seal along the bottom edge. Once it was started I pryed the glass/seal downward all the way on to the lower flange. I pryed against the roll bar. Also useful if you need to push the seal/glass sideway in the opening, which I also did.
Notes:
1) I did not use any lubricant. Lube would help BUT: if you lube the exterior groove channel how will you ever get sealant to adhere properly to the rubber and the top? You can't.
2) I started out really prissy like, just like with removal. You will quickly realize you gotta man up and get firm with force. Gentle, BUT firm.
3) My seal does not look damaged, but I will say the interior side rubber feels a hair softer then the exterior sides. BUT, the exterior sides of the seal has the LOCK, and that has a plasticky ridge, so probably why it feels a bit harder on the outside. New seal might help make install easier, but I doubt it. This job is a PIA if you are a rooky like me, pro's make it look easy.
4) Much easier working in the bed, where you can stand up and stretch, compared to inside the cramped cab interior.
Anyway, about 1.5 hours screwing around, about an hour of manning up, got that SOB in there!!
Now for the fun part, clean up!!!