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High pressure switch for converted 134a system 700 1990

posted by  spasske on  Tue Sep 30 09:06 CST 2014
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last visit: Thu Oct 23 10:11 CST 2014
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There is a service bulletin describing how to do this Volvo sells it as a kit.

You have to replace one pipe that includes the new high pressure switch that piggybacks on the low pressure switch.

R134a runs at a higher pressure. There is a screw in the blow off relief switch that can be screwed in or out to change the blow off point. Don't know which is which.

I add it to mine but it has been quit a long time ago.
--
Paul NW Indiana '89 744 Turbo 175K/ '90 745 turbo 145K






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