Converting factory AC to use R134a

[picklito]

I've decided to go with Delco PAG-150. Evaporator has been professionally cleaned and pressure tested. Drier is new. Can I just rinse out the hoses, condenser, and compressor? I'ver read in a few places that electrical contact cleaner is a good solvent for old R12/mineral oil and it's cheap. Thoughts?

[Katrina/10]

Originally Posted by picklito

I've decided to go with Delco PAG-150. Evaporator has been professionally cleaned and pressure tested. Drier is new. Can I just rinse out the hoses, condenser, and compressor? I'ver read in a few places that electrical contact cleaner is a good solvent for old R12/mineral oil and it's cheap. Thoughts?

Brake cleaner spray works well.

[RedRoad]

Im starting to collect parts for my K20 Suburban A/C and have to get a large amount of hose to run to the rear unit. I was wondering if anyone has just cut off the fittings for the compressor/condenser/POA from the old lines and just used hose clamps instead? If I do order new hoses I hate to have to cut them in half to add the T fitting that just uses hose clamps anyway.

Is there a conversion schrader valve kit I need to install to the old muffler and valve to use 134?

[MARKDTN]

Originally Posted by RedRoad

Im starting to collect parts for my K20 Suburban A/C and have to get a large amount of hose to run to the rear unit. I was wondering if anyone has just cut off the fittings for the compressor/condenser/POA from the old lines and just used hose clamps instead? If I do order new hoses I hate to have to cut them in half to add the T fitting that just uses hose clamps anyway.

Is there a conversion schrader valve kit I need to install to the old muffler and valve to use 134?

You do not want to use hose clamps on an AC system. I know this is how it was stock, but that is a leak point. You want crimped hoses and fittings. Do it right the first time and it should work well for a long time.