Thanks to all for your response to my question on the AC system for my 85 Westy.  Based on what you've said I think I will just let it be.  Having spent most of my 72 years without AC in a car I can live without it and I'd rather spend my limited retirement income on necessary repairs.  Meanwhile my wife and I are really enjoying the Westy.  Great fun to drive and camping without having to set up and take down a tent (especially in the rain) is a real treat.  

Jim
85 Westy
68 Saab V4
87 Saab 900T
2010 Subaru Forester