Offroad-Express

have got a factory aircon pump for my 3y, was wondering how easy it is to setup/fit to use as air supply for me tyres?
its currently out of the truck at the mo, does it need an oil supply?

There is truck loads of info on the net about this. Though my link is not Toyota specific, but it gives you plenty of ideas:

http://www.jeepforum.com/forum/showthread.php?t=702507&page=2