1993 GMC Safari GMC retrofit

  • 1993 GMC SAFARI
  • 6 CYL
  • 2WD
  • 20,002 MILES
93 GMc Safari. HAS a leak on evap side of dryer. R-12 is not cooling good anymore. Time to change to new refrigerant. Considering R-134a, hotshot, Freeze 12. With R-134a, do I need to replace dryer, replace expansion valve & orifice tube, flush evap. Condenser & lines, and drain oil from compressor( It's at the firewall, Ugly job, mirrors, stand on you head, strong arm, snake light & all ) replace all O-rings? If so, what size expansion valve & orifice tube do I need? Will R-134a work in a dual cooling system? The 134a kit has 2 oz. Oil + stop leak in each 12 oz. Can. Any estamates of how many pounds needed for a dual system? Any recommendations on which refrigerant is better? Big question, I'll have to get a set of metric flare wrenches, the dryer fittings are 32mm and the line side is 28mm, how big do I have to go before I can use open end wrenches? I asked a local shop, how much to evacuate the system & with each thing I told him, more $$$. He didn't want to just evacuate, so I'll have to do the dirty work myself & I want to do it right the first time.
Do you
have the same problem?
Friday, August 15th, 2008 AT 1:08 AM

1 Reply

Most good parts stores sell a kit for the conversion process. You do need to repair the leaks as well as replacing the accumulator, and orifice tube.
Was this
Friday, August 15th, 2008 AT 10:43 AM

Please login or register to post a reply.

Recommended Guides