ok so this afternoon I was changing the slave cylinder on my car and just when I was tightening up the last nut, the pin that you screw the nut into, came off. It didn't come off completely but it's loose and I cant tighten the nut, the pin rotates with the nut. What could I do to fix this? Do I have to buy a new piece? or could i get it welded back on? please help me out

 

Does the pin (stud) screw into the transmission case? If so this may be alittle bit of a problem, definitely fixable though. It is very possible that the threads are damaged in the aluminum trans case. You may be able to buy a longer stud to try and "catch" some more threads or replace the stud with a bolt to do the same thing. You will need to remove the slave for now to better inspect what your up against.

 

or you could just put a new helicoil in the hole for the stud and that would be an easier fix and the right one

 

helicoil?? I've never heard of that, how does that work?

 

Helicoil is a great thing, google it. You will have to drill/enlarge the bolt hole and tap new threads in it. Then a threaded insert is installed and bingo, you have a new threaded hole. They are sold as a kit with all you need to fix. Hopefully you have enough room to get a drill in that area? Good luck