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VOLVO AC R134 refit kit instructions for the 700 series
Conversion of A/C system form R12 to R134a Retrofit: Page 4
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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.
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A6
Plug all open pipe ends to prevent moisture from entering the system.
A7
Wipe clean around all connections that have been opened.
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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.
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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.