I was riding home last night when all of a sudden my main zipper on the front of my Joe Rocket textile jacket came unzipped from the bottom up. the Zipper slider was at the top in the normal position when you have your jacket zipped up. I stopped and got my jacket unzipped and tried to re zip it up again. Every time it would not mesh the zipper together. it didn't appear to have any bad or broken teeth on either side. I worked on it for two hours last night and couldn't get it to zip. finally I find a text on fixing your zipper. I worked with it for another hour and finally got it working again! This could be helpful to other people. The third picture is what actually got my zipper working again. but heres the directions I found.
First, examine the slider from the side, as shown in the images below,
Crimp Slider Down Views 1 and 2. If the gap appears to be wider than it should be when compared to a properly functioning slider on another similar zipper, using a pliers very gently crimp on the the two sections, as suggested by the red arrows, to slightly narrow the gap. Be gentle and don't squeeze the pliers too hard. It's better to crimp a bit and test the zipper action, and crimp again if necessary, than to torque down hard on the first try. If the crimping action causes the two sections to come too close together, and the slider jams, gently pry them apart just a trifle using a screwdriver blade.
If that adjustment doesn't fix the problem, and the slider tail has split (open) ends, gently crimp as suggested by the third image below,
Crimp Slider Sides. Again using pliers, apply a small amount of joining pressure to the two "bottom" or tail halves of the slider, i.e., the end that is closest to the floor when normally starting to zip up a coat or jacket. Two crimps may be necessary: first nudge the sides that are closest to your body when you have the garment on, then adjust the two other halves. Again, it's best to err on the side of caution, and not over-crimp on the first attempt.
Once the zipper is closing correctly, rub a candle or a bar of paraffin wax on the zipper's teeth to lubricate them.
Unfortunately, if the slider is made of plastic, these techniques won't help. Only metal sliders can be adjusted in this fashion.
http://i16.photobucket.com/albums/b2..._zipperear.jpg http://i16.photobucket.com/albums/b2...ipper_side.jpg http://i16.photobucket.com/albums/b2...ippercrimp.jpg