Repost- manual window problem- '80 240D

[wordmanjay]

No one posted a help reply, so I'm reposting. Need to get this figured out.
Please help.

Passenger side front manual window.
Will roll down without a problem. When rolling up, the window goes up crooked, leaning toward the front- to get it to go up, you have to keep pressing the glass back as you go up.

Took the panel off and checked it out. When the window is all the way down, the front of the window(towards the front of the car) isn't in the track- there's better than a half inch gap between the bottom front of the window and the bottom of the front guide rail (track).

When the window is cranked up, the front of the window doesn't go into its guide rail (track) at all- it has to be guided up by hand.

I saw broken glass in the bottom of the door, so I'm assuming this glass has been replaced at some point.

I took the entire glass out of the door thinking that if I can move the glass forward in the bracket that the glass sits in (at the bottom of the glass), then it might sit in the front guide rail (track) at the bottom- maybe that will help guide it the whole way up.
I'm having a problem moving that bracket the glass is sitting in- using wood block and rubber mallet.....it's not budging- do you think I'll have to remove that bracket to get it to move? Do you think this will help?

Here's the numbers off the glass- just in case I'm dealing with the wrong size glass for that door-
Sekurit-1F
D287
Dot27 M53 A S2
DGM 35636
ITP GSE 433 000

Thanks in advance for the help.
Jay

[matthias08]

my regulator on my '79 240D had actually begun coming loose...


tightened it up and said problem went away.

[toomany MBZ]

^ Try that, I went through the FSM, I couldn't find anything on the rail.

[wordmanjay]

It looks like I'm going to have to replace the regulator- not that the one in the door looks broke or anything.
It just lets the front of the window droop as it goes up, causing it to bind until you straighten it up by hand.
? Is that all I can do about this? It's probably just bent?

[barry123400]

It has been too long since I changed a front door glass in a 123 body. You issue sounds like you should seek a new regulator from a wreck or ask on our parts wanted and for sale section.

You could remove the old one to see what is wrong with it first. May be repairable. Maybe not. In theory the track on the glass is removable. I tried to remove it myself and would not recomend trying to remove it. No need to anyway. With the regulator out you can just block the glass up with a board cut to length.

[toomany MBZ]

Swapping out a regulator is tedious, nothing more. I'd go with a new one tho.