Posted 4/27/2009 23:07 (#695304 - in reply to #694672) Subject: Re: jd 4840 ac questions
You need to get the vacuum to something in excess of 25". Then isolate the pump and make sure it HOLDS that vacuum for at least 30 minutes. If it isn't holding the vacuum then you still have a leak somewhere that needs to be fixed.
jd 4840 ac questions
