Generally looking at other technical camera bellows replacements, its really just getting them off the camera(the manual should have info on swapping bellows such as when using a bag type) and placing a new set in. If the new set doesnt have the mounting hardware at either end of the bellows youd have to cut it off the old set and attach it onto the new bellows. I have seen a few videos online that outline this process, though not specifically for your camera. Id suggest you watch a few for tips on adhering the components together and materials required before you start. Also recording images as you go along helps when backtracking.