7. Use An Impact Driver

 

Removing Stuck Fasteners

While bike manufacturers don’t use phillips head screws on engines as much as they used to, the home mechanic can still run into them on occasion. When phillips heads get munged up, use an impact driver. Impact drivers take a hammer blow and turn it into rotational force. So, when you hit it with a hammer, the screwdriver tip is jammed into the screw head, creating a tighter mechanical bond between the tip and the screw at the same time that impact driver attempts to rotate the screw. There is something quite satisfying about banging on an impact driver with a hammer and watching the screw begin to turn. This can also be done to bolts, provided you have hardened sockets. (Regular sockets can shatter.)