If the car is the one in your picture, then the channel you speak of has a u shaped piece of rubber that fits in the metal channel and glues to the bottom of the glass. It'll go up fine because the motor is pushing the channel against the bottom of the glass. Coming down the glass is undoubtedly dragging on the window seal in the back or the window channel in the front. The only "good" repair is to take the glass out of the door, refix the rubber channel to the bottom of the glass and the glass to the metal channel. Then reinstall the glass to the regulator. This will require removing the regulator from the door mountings so that the cross arm wheels can be reinserted into the metal channel. If the metal channel piece is real rusty it's a good idea to replace it and the rubber channel that goes inside it. With the window out of the car, glue the rubber to the bottom of the glass with yellow 3M weatherstrip adhesive and then using the 3M adhesive as a lubricant, push (and it takes a lotta push!) the glass and rubber into the metal channel. The wet adhesive will aid in sliding it into the channel. The Targa channel has a plastic piece on the rear end of it so the lower rear corner of the glass fits right in there. The coupe channel can go pretty much anywhere along the bottom edge of the glass so it's best to mark it before disassembling and cleaning (if you want the window to be able to roll up and down again). The plastic piece on the back of the channel is what rides up and down in the rear window frame. The leading edge slides in a piece of rubber channel in the front window frame. Make sure that rubber channel isn't boogered up and lube it with silicone spray. Sorry for the wordiness.--Dave
|