Hi there
When the passenger window would go only half way up, (and after removing door panel), I noticed the glass was off its forward track. Neither looseing or tightening the mechanism's 4 bolts gives me room to re mount the glass in its track. Will appreciate any help. Thanks,
George

Is yours a power or manual window?

I once had to replace a right front door window (244).
It was a manual-crank window, but I don't know if that makes a difference.
If I recall, I slid the glass down into the track from the top.
You may need to do the same to get yours back on track.

The glass had come detached from the riveted bracket at the bottom.
No such thing as reattaching the bracket, I had to replace glass with bracket attached, taken from a junker.
The price of the part was very reasonable, but required me to remove a total of 2 windows (and inner door panels) and replace one window.

Good luck!

--
Sven: '89 245, IPD sways, electric rad. fan conversion, 28+ mpg - auto tranny. 850 mi/week commute.