69 Dart door glass alignment...
On the 69 I don't know for sure, but I'm pretty good with the internet.
Maybe I can find out and get back to you.
On my car (73 Dart) I like the glass to stop before it goes down past the window whiskers (less able to rattle), so I lightly pinched both tracks where I wanted the rollers to stop.
Worked great.
This is the glass and roller track on a Charger (which are really close to the dart if not exact.
At the end of that arm you see that button looking head?
There is a roller on that pin on the other side of that arm.
Your window looks to be too low almost exactly the amount the missing roller would let the glass drop on one end.
Another way to darn near prove that easily is to lift on that end of the glass and see if the glass moves a lot more up and down that that arm does.
Sometimes the busted up roller is even in the bottom of the door.
I think that is what is wrong with your glass.
On the 69 I don't know for sure, but I'm pretty good with the internet.
Maybe I can find out and get back to you.
On my car (73 Dart) I like the glass to stop before it goes down past the window whiskers (less able to rattle), so I lightly pinched both tracks where I wanted the rollers to stop.
Worked great.
This is the glass and roller track on a Charger (which are really close to the dart if not exact.
At the end of that arm you see that button looking head?
There is a roller on that pin on the other side of that arm.
Your window looks to be too low almost exactly the amount the missing roller would let the glass drop on one end.
Another way to darn near prove that easily is to lift on that end of the glass and see if the glass moves a lot more up and down that that arm does.
Sometimes the busted up roller is even in the bottom of the door.
I think that is what is wrong with your glass.