This what we mean by loose glass in the doors of a 69 mustang.
How to adjust door glass 1970 mustang.
Are you trying to adjust the window fitment.
If the door is off just a tiny bit up or down at the rear you can lift or push down on the rear edge.
Is the back edge sticking out too much or in too much.
For you guys that are familiar with the door window adjustment.
Keep in mind that a little adjustment at each point makes a huge difference so adjust in small increments.
Just those 3 bolts and 1 nut do all the adjustments you need.
My window wont slide easy i.
Hey guys have a 69 mustang with the 70 bolt in glass.
Mine are all new 70 glas.
I found this pic on line that may help explain my problem.
First try to lift up using your hands.
Did you ever think of going with the 1970 mustang bolt in setup.
Jack it up a little at a time it is easier to lift a little more than it is to lower it to the right heigth if you go too far.
If this does not move it enough use a floor jack but put a 2x4 between the jack and your door edge to spread the load.
This bolt is in an oblong hole in the door.
It turns slightly hard one way which i think is where the spring tension is and easy the other way.
The old bonding is the alignment.
This is because someone rebonded the glass into the brackets and scraped out the old bonding.
You can do it several ways.
Replace the glue in glass with 70 type bolt in glass.
The regulator where it mounts to the window bracket on the left side in the pic has a slot that allows the window to be adjusted forward or rearward.
The best way to solve the problem is to do exactly what ford did for 1970.
It is easier to install then the factory 69 bond in.
Loosen it and adjust the height of the rear of the glass so that the window will close evenly across the top and re tihten.