Tools for Self Reliance puts out a wonderful manual on refurbishing old sewing machines.
http://www.tfsr.org/publications/tec...achine_manual/
Treadleon has an article on installing belts.
http://www.treadleon.net/sewingmachi...eadlebelt.html
And another article on servicing a treadle.
http://www.treadleon.net/sewingmachi...gtreadles.html
You might need to take several extra belts with you and a kit with screw drivers of various sizes, sewing machine oil, etc. If you don't have any experience with treadling, try to find someone to help you learn before you go, on a machine that works, so you know what a good treadle machine feels like. Good luck and have fun. Send pictures!