thanks Robert, So, what are barrier hoses and where does one get them? What is "an appropriate sealer"? Thanks, mcneely ---- Robert Fisher <garciasghostvw@GMAIL.COM> wrote: > What I've always read (but have not researched for myself) is that the R134 > molecule is smaller than the R12 molecule and so will eventually leak out > through the hoses unless one installs "barrier hoses" or adds an > appropriate sealer to the existing system. > On Jan 21, 2014 5:25 PM, "Dave Mcneely" <mcneely4@cox.net> wrote: > > > My 1991 Volkswagen Vanagon GL Campmobile with factory air conditioning and > > a 2.1 liter engine (159k miles) loses refrigerant over the course of a > > summer. It had it converted to R134a two springs ago. It got all new > > fittings, the system was flushed, and new proper lubricant for R134 was > > added. It cooled wonderfully well, but by summer's end it was not doing > > so, despite two shops claiming not to be able to determine that it was > > leaking. They reported that with a "leak down test" over 24 hours, it held > > proper pressure. > > > > So, next spring it needed recharging again, and again, "leak down test > > reveals no leak." By summer's end, it was not cooling. Recharging > > resulted in the thing cooling marvelously, air temperature from the plenum > > being around 48 F. So, what do I do now? I plan to use the camper this > > spring, summer, fall and will need air conditioning for some trips through > > the plains and Southwest. > > > > Help! > > > > David McNeely > > -- David McNeely |
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