So, I've dutifully combed through the DIY links here but found nothing.

1985 300CD.
Last year, I replaced the door *CHASSIS* rubber seals. These are *NOT* the seals that fit into the doors. I know, there are lots of links here about those. Mine are fine, thank you very much.

I am referring to the rubber seals (one on each side) that cost the ransom of 3 kings from M-B and that fit into the chassis starting adjacent to the dashboard, up along the roof line and over the front door window (driver or passenger), over the rear quarter window and then disappear. The front 24" or so are covered in black fuzzy material...probably accounts for 1 of the kings ransoms.

Ok.

I was as careful doing this job as a proud mama or papa would be with a newborn and all went well. Well, except for one thing, of course...

The passenger door shuts beautifully. Firm and with a tight seal that would make a M-B engineer proud.

As for the driver door, well, you see, if you shut it firmly, it will shut, but the top of the window will *NOT* slide under the lip of the seal. The top of the window gets hung up on that lip. If I push on the window, it will snap under the lip.

Yes, yes, the driver door has been closed far more times than the passenger door. Perhaps the hang of the door is the issue? One would think though that if anything, the door would sag, not lift to make the window hang up on the lip of the seal.

I have carefully scoured the Factory Service Manual for a way to adjust the electric window regulator but there appears to be no way to regulate it. Am I misinformed?

So, new chassis seal and the top of the driver door window (being in the fully up position) will not slide under the seal. And oh yes, I have quadruple-checked that the seal is properly installed into the chassis. At least it appears to be.

Anyone encounter this problem?
Anyone solve this problem?
Any ideas?

Thanks-

On both my 1978 and 1980 CD's I had this issue, there are upper window travel stops that can be adjusted to limit the upper travel of the glass .

Both were wonky on those Coupes, I spent some time with the inner panel off making very minute adjustments .

The '78s door had been poorly fooled with long before I got the car, I had to buy another complete used door to get the proper undamaged stops, guides and so on before I got it to work .

Take some time and fiddle with it, you'll get there although the entire door and glass will likely be covered in greasy smudges by the time you're satisfied with it .

Once fixed & properly adjusted I never had another quibble with it .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

"W123 CD Door Glass 'FUN'"
I caught that.

Oh, bless you my child!
It has been long enough since I pulled the panel and many, many years since I've replaced a front window lifter that I could not remember if there were such things. Score!

Well now, that's a 123 coupe for ya!
People often tell me: Wow, sweet car.
I often respond: From time to time, I feel the same way.


Ah, minute adjustments...
A. That sounds like the perfect solution for me.
B. That sounds like the handiwork of those dang German M-B engineers again.

Yes, indeed.
I've replaced both of the motors in the lifters for the rear quarter windows so I can probably successfully swing this little foray at the driver's door.

Considering the car's age and my age, if I can take care of this, we're both probably good for the rest of our days together.

Bottom line?
Thank you for this *VERY* helpful reply!!

Thank me when the job is done, not now .

I've been a German car Mechanic since the 1970's and always marveled/cursed that they're designed to be taken farther apart than you can get parts for......

I'm on my third 300CD now, it's much rougher than the other two but they're great cars IMO .

Reliable and comfy, if the seats are original and not broken they're fantastic, I have a broken back and neck, multiple metal plates and screws etc. so good seats are a must as I like to spend long days behind the wheel .

Anyway, I always try to pay back the massive amount of help and knowledge I've received here, pay it forward once you've learned Coupe door details .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Dang you. You're wise.

What poetic truth you speak about the engineering of these vehicles. One wouldn't believe such a thing unless one has lived it.

I'm on my second and after 20-plus years with them, I think my relationship has some additive qualities, quite candidly.

You've delivered big time here. Sincere thanks!

Like I said, when my worthless free advice doesn't solve your problems, then decide to thank or curse me .

I've been working on old things since I was in short pants, I love to fiddle and tinker .

When I was a dealer mechanic (not M-B) I didn't get any comebacks but they hated me because I took too much time .

Like everything else in life, what you get out of it, depends on what you put into it (sort of like the sewer, dig ?) .

Thanx for your support in any case .

I took my junker 1984 300CD on a nice mountain road trip with one of my Foster boys to - day, some how I managed to get ahead of all the Motocycles in my group, they never did catch up, we had a whale of a good time , these are superb cars to travel in, not only tootle 'round town .

BTW : old German things like Horex' , Gogomobiles, vintage VW's and so on are all made the same way as our expen$ive Mercedes are......

Take 'em apart and fix the darn things like was intended .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Look at my threads on 300CD door seals. I have a few. It appears that currently, Photobucket removed their ransom fee so you can actually see the photos too!

Here is the final one. I did finally solve it. I was at my wits end.

Read this thread all the way through:

http://www.peachparts.com/shopforum/diesel-discussion/314303-w123-coupe-window-adjustment.html

Your situation sounds like mine!! Adjust and adjust, per the FSM, and no dice. Why? Because one of the stops was actually upside down, apparently from the factory.

I would adjust and adjust and think that things were about right, and then fail.

Looking up in the door and observing the direction of the stops made it all click.

Alas, I still haven't buttoned that car all back together...

Let me know if you have questions. Since my car is still open I can go into the garage and have a look to help answer questions.

Good luck!!

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)