Mounting details
Fasteners - nuts, bolts, studs and screws - hold the parts together. When working on fasteners, remember the following: they must be clean, straight, well threaded, and free from rounded hex heads (on which the key is installed) Make it a habit to replace any damaged nuts and bolts with new ones. Almost all fasteners have some type of locking device - lock washer, locknut, locking tab, or thread sealant. Do not reuse special nuts with nylon or fiberglass inserts. When removed, they lose their locking properties. Install new lock nuts.
Flat washers and lock washers (spring) washers after their removal, the phase must be replaced. Replace any damaged washers with new ones. Never use the lock washer on any soft metal surface (such as aluminum), thin sheet metal or plastic.
Use a wetting agent to loosen rusted nuts and bolts and prevent damage. Some mechanics use turpentine in cans with a tip that works well. After applying the rust wetting agent, allow it to soak for a few minutes before attempting to loosen the nut or bolt. Heavily rusted fasteners can be removed with a chisel, sawed off or removed with a special tool for cutting nuts.
If a bolt or stud breaks off inside an assembly, it can be drilled out and removed with a special tool commonly used for this purpose. Most bodyshops can do this work as well as other repairs such as repairing damaged threads in holes.