Eric, this thing got the full migillah. New seals, new expansion
valve,filter, vacuum check, flush,oil, and R134a. I'm sure I have a tiny
leak somewhere - just how to get at it without tearing it apart again -
that's my goal.

John

On 5/8/2013 5:56 AM, Eric Ley wrote:
> The use of sealant in A/C systems, There are two types of sealants used in
> A/C systems one is a thinner (conditioner) which makes the seals expand
> they
> eventually dry out and leak twice as bad. The other type is a gel that
> hardens in the presence of oxygen it will fill holes and cracks even in the
> condenser or evaporator, did you do a 100% full vacuum on you're A/C system
> to insure there is no oxygen in the system if your get in a accident and
> the
> system is exposed to oxygen it is scrap...... Your choice but if you take
> the time to properly find the leak and repair you will save the most in the
> end.
>
> Eric Ley
> Garage Mechanic ELM
> 2001 Demers Franklin, Qc
>
> --------------------------------------------------
> From: "JRodgers" <jrodgers113@GMAIL.COM>
> Sent: Wednesday, May 08, 2013 6:19 AM
> To: <vanagon@GERRY.VANAGON.COM>
> Subject:      Re: AC 134a refrigerant leak down
>
>> Good stuff to know about. When the system was overhauled - the system
>> was upgraded from R-12 to R134a with a kit from Van-Cafe that had all
>> tht newer type seals. The thing didn't leak a drop from months,, then it
>> started slowly losing it's cool - so to speak. Then I tarted adding a
>> can of 134a once in a while. But I would like to stop that - and was
>> hoping the sealant would do the trick.  Next time I add some I will use
>> a type with sealant and dye.
>>
>> Thanks,
>>
>> John
>>
>> On 5/7/2013 9:23 PM, Tom Hargrave wrote:
>>> Yep, that's why you replace the O-ring seals with less porous seals.
>>> They
>>> used to also replace the rubber hoses for the same reason until the AC
>>> community "discovered" that once the old hoses were soaked with
>>> refrigerant
>>> oil they sealed themselves tight enough to hold R134a. But the front
>>> compressor seal is never replaced & often they will leak enough R134a to
>>> pass a can or more / month.
>>>
>>> Thanks, Tom Hargrave
>>> www.stir-plate.com
>>> www.towercooler.com
>>> www.kegkits.com
>>> www.grow-sun.com
>>>
>>>
>>
> .
>