Using the Greenlee 23932 roller pin is easy. First, make sure your electric bender is turned off. Then, carefully insert the roller pin into the appropriate slot on the bender, usually on models 555 or 555C. When using the bender, keep an eye on the roller pin's movement to ensure smooth operation. As for maintenance, after each use, wipe the roller pin clean with a dry cloth to remove any debris. Every few months, you can apply a small amount of lubricant to keep it working well. Remember, always turn off the bender before doing any maintenance to stay safe.