4 speed pedal rebuild

When I disassembled my pedals all the needles came falling out from the bearings, so I was forced into replacing them. Its really no big deal at all. The best tool to use is a blind hole bearing puller but unfortunatly not everyone has access to one of those. You can likely get away with just using a brass punch and tap them out with a hammer.
The only real task in rebuilding your pedals is going to be dealing with the spring. But even thats not too bad. When you go to remove that put flat washers in the between each coil in the spring and it will help to keep it from compressing. This way you can remove and install it a little easier.