Quoted from Luckydogg420:

I've got tight stairs and a dolly won't work. If you want to easily move a pin up any flight of stairs by yourself; take it apart.
Step 1. Take pictures of the boards in the backbox.
Step 2. Disconnect the wire harness from the boards in backbox.
Step 3. Remove backbox from cabinet.
Step 4. Remove lock bar and glass.
Step 5. Carefully remove Playfield. Set it aside, don't break anything.
Step 6. Remove legs.
Bring each part up the stairs and put it in your jeep. Use your pictures to make sure the connections go back to the right spot. Put the Playfield back into the cabinet to transport it. The head can be left off until you get home.
It takes some time, but you can get a pin outta anywhere by yourself.