VOLVO AC R134 refit kit instructions for the 700 series

Conversion of A/C system form R12 to R134a Retrofit: Page 3

The method described below is for installing Basic kit PN 9145660-8. This is, in principle, the basic method for installing Basic PN 9145661-1 or supplementary kits according to the first two pages.

Empty refrigerant from System

This MUST be done by a licensed AC technician. The free release of freon R12 is a federal offense. Most places should do this for a small fee. This also helps remove the oil and the freon trapped in the oil that could cause problems later on because of the incompatibility between the two type of freon.

Remove:

Battery negative cable
Receiver

Use rust inhibitor PN 1161422-9 on all screw joints which are to be detached
Allow the inhibitor several minutes to work before undoing screwed joints.

NEVER USE EXCESSIVE FORCE

Note: Under no circumstances use heat when removing

I didn't do this step and all went fine. I would say this is precautionary but not fully necessary

Detach:

ETF/KRU valve bracket. Remove circlip and valve (where installed)
pipe connections at the receiver inlet and outlet. Be sure to use two wrenches when undoing connections so not to twist lightweight metal.
the pressostat connector. Remove pressostat: this will be reused. This is the low pressure cutoff switch. If defective you can purchase one at the local parts store for about $12.
Existing O rings (note sizes) Replace with new rings from kit on new equipment.

Remove screws holding the receiver clamp

Lift out Receiver

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