[Archived]

Cliff I had a knowledgeable AC Gent do it and show me how to check and add freon to my 3 a couple years ago and also on my Detroit 2 strokewith OTR Air.. I do it myself now and have to because one of the boogers will leak down after a while. Email me (i think I have it up) and I’ll give you the basics. Heck , we even changed out a kingvavle that was toast on one Cruiseair. had to solder it in. I know just enough to be dangerous. LOL.

[Dick]

You need cruise air manual #L-0261 but since you do not have one you can remove the caps on the high and low side (not the red one) hook up your gauges and then open the valves counterclockwise a couple of turns.If I am going to only add freon I only hook the gauges to the low side(large copper tubing)and add freon,the unit must be running to add freon but if you have vaccummed it do not turn it on until you have at least added enough freon to be on the positive side.Normal recharge is through the suction side (large tubing)you can add and with your hand feel the tubing and when it gets real cold STOP.I use an infrared heat gun and aim it at the valve and get it as cold as it will go with little squirts of freon.Remember counterclockwise opens the valves.These are known to leak out from the glands of the valves so it might be a good idea to check for leaks around the glands,it takes a 7/16 wrench to tighten the gland nut.When they are tuned up they will really cool very well.

[Peter]

Here’s a discussion on this subject.

http://prevostcommunity.com/forum/threaddetails.asp?Category=HVAC&ThreadID=4050