S&Wrevolverfan,
It wouldn't eject cartridges if there were any loaded. Took the screw out that secures the cylinder and pulled the cylinder off, then off the yoke. After that it worked. It's just gummed up cause it was not cared for in its first life. Normal for an issue gun. Any penetrating oil will clean off the old dry **** for you, just have to be patient. If you know how to take off the side plate, douse that area too and clean it out with gun scrubber or brake cleaner, then lightly oil the connections. Mine will be a carry gun so some marks on the outside are character for me. Enjoy!