... they are excellent ! I'm very happy with them, they could be the best mechanical research books I have seen for anything ... refrigeration or any other system on a boat, including Calder's books ... which I find difficult to read and understand, but I'm a slow processor. Richard has excellent advice and experience for installation, maintenance, repair, tips and examples for 12V and Engine Drive systems. If you are in fact considering a re-build, these books are a must, I'm impressed, I think you would enjoy the books.

http://www.kollmann-marine.com/

Cheers, John