Main issue with any old vehicle and an RV in particular is that rubber and plastic do not like to sit unused. The belts, hoses, plumbing and door gaskets might be old, dry, cracked and leaking. Aside from that all the obvious things to check on any vehicle. Also, look for any signs of a roof leak. Wood rot inside the walls is common since it's such a closed up space and can never really dry out.
I have a 1990 Class B van that I gutted and rebuilt inside. Lots of work but got it just how I want it now.
|