Conversion of A/C system form R12 to R134a Retrofit:
Page 4
Remark:On older cars or cars where the
A/C system was installed as an accessory, there is no EFT/KRU valve
In this case remove the pipe (see arrow) at the firewall. Then use Supplementary
kit (1) PN 9134032-3 for installation.
Be sure to backup with a wrench both sides of the joint as no to
twist the light metal.
A6
Plug all open pipe ends to prevent moisture from entering the system.
A7
Wipe clean around all connections that have been opened.
A8
Expansion pipe (orifice) location:
On model years 1991 and earlier (780 -1990) the orifice is located in
the receiver inlet at the firewall (see arrow).
Note: Make a point of noting how the orifice is sited in the pipe. Refer
to this and the next illustration. Arrow B
A9
On model year 1992 and later (780 1991-) the orifice is sited in the
High-Pressure pipe at the pipe joint on the side member, Arrow A
Note: In some cases the work will be made easier if the pipe for the
evaporator inlet is removed at the firewall (the right side pipe as shown
at Arrow B).The O ring must then be replaced PN 3537503-9
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