[Shotimes] A/C R12 to R134a Conversion Questions

Heikki Laine heikki@heikkilaine.com
Wed, 23 Jul 2003 19:58:52 -0400


I am currently collecting parts to repair/convert the A/C in my '93 MTX.  If
someone has done this and is willing to help me out that would be greatly
appreciated.  In searching for these parts I came across listings for the
liquid line and the accumulator/drier.  In most systems I have seen there is
a component known as the filter/drier.  Is the filter in the SHO A/C
incorporated in the accumulator/drier?  Or is there an indepentdent filter
somewhere that I also need to replace?  Since I am converting to R134a I
will also need to replace any other parts which are R12 specific.  I read a
mention of replacing the orifice, which is part of the liquid line.  Do the
liquid lines with the R134a orifice directly replace the liquid lines with
the R12 orifice?  i.e. Can I simply purchase a liquid line for a '94+ or a
R134a liquid line for a '93- (if such exists)?  As for the
accumulator/drier, is this specific to the type of freon that is being used?
Are there other parts that are suggested replacements?  I plan to replace
the o-rings to ensure a good seal.  Can I leave the manifold/discharge as it
is?  If anyone has any info that may be helpful please let me know.  Thanks.

-Heikki
'hA-kE

Also, is there a "search" function for the archives that I don't know about?
Hoping....