MattMack Posted January 16, 2022 Share Posted January 16, 2022 I have searched and searched on here for a thread and cannot find one. I have a 1989 Superliner RW713 with the old R-12 a/c system, which is not working. Can someone point me in the direction of a company that has a conversion kit to R134? Thank you in advanced Quote Link to comment https://www.bigmacktrucks.com/topic/69068-ac-conversion/ Share on other sites More sharing options...
ekennedy21 Posted January 16, 2022 Share Posted January 16, 2022 There is no kit. You need to swap the expansion valve, receiver drier, and compressor. You will need to get or make a bracket for a sanden compressor. Quote Link to comment https://www.bigmacktrucks.com/topic/69068-ac-conversion/#findComment-487165 Share on other sites More sharing options...
Joey Mack Posted January 16, 2022 Share Posted January 16, 2022 (edited) we have 2 superliners with a unit that goes under the passenger seat and the condensor with the fan is mounted on the frame behind the cab on the left side. you use the compressor on the engine and run long lines. the unit under the seat has the blower and vents in it. I put a small fan in the cab to circulate the cold air better. it is a good set-up not perfect... but good.. We are in central N.C. we get many 90+ degree days.. I will be back at that shop on Tuesday, and I will try to get the name and part number.. I posted this because the grill condensors are expensive.. the A/C system was 3/4 the price of replacing just the grill condensor. Edited January 16, 2022 by Joey Mack More content needed Quote Link to comment https://www.bigmacktrucks.com/topic/69068-ac-conversion/#findComment-487170 Share on other sites More sharing options...
Vladislav Posted January 16, 2022 Share Posted January 16, 2022 There are new York style compressors avalible already set (marked?) to R134. I'm not 100% sure but from talks with A/C folks you only need to swap oil in the compressor not the unit itself. There may be difference in the shaft seal material though. 2 Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/69068-ac-conversion/#findComment-487176 Share on other sites More sharing options...
mrsmackpaul Posted January 16, 2022 Share Posted January 16, 2022 We just change the gas and a new dryer, there are kits but no one uses them unless the compressor has gone Kaput Paul 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69068-ac-conversion/#findComment-487180 Share on other sites More sharing options...
MattMack Posted January 17, 2022 Author Share Posted January 17, 2022 Ok thanks a lot!! I've got much info to look into. Quote Link to comment https://www.bigmacktrucks.com/topic/69068-ac-conversion/#findComment-487226 Share on other sites More sharing options...
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