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134 conversion for 89 astro

pressurefreak on Mon July 06, 2009 5:22 PM User is offline

Year: 1989
Make: chevy
Model: astro- w/o rear air
Engine Size: 4.6l
Refrigerant Type: r12

Hi all, been snooping around the forums and trying to get a better handle on what I need for an r12 to 134a conversion. Minimum from what I can tell is new accumulator and blue orifice. Want to know what I should flush system with. lacquer thinner, mineral spirits/ hecat? also would like to know what weight of oil Pag 150 or the BVA EASTER glow 100. (8 ounces). System is clean, just getting harder to find r-12. found out compressor shaft seal was leaking(r4). Vehicles has just under 100,000. Any input would be greatly appreciated. Ive got a set of master cool gauges and a decent vacuum to draw the system down.

Chick on Mon July 06, 2009 8:17 PM User is offlineView users profile

Change the accumulator, Hecat flush is good, use plenty of shop air to blow it dry no matter what you use, my choice would be the BVA auto 100 from Ackits.com, and here's a list of things for the 1989 Astro van use new O rings, and I would change the compressor or the shaft seal, retrofitting is no cure for a leaking system.. Hope this helps..

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Chick
Email: Chick

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