RatLabGuy
You look like a monkey and smell like one too
- Joined
- May 18, 2005
- Location
- Churchville, MD
BLUF: anybody know if there is a way to drain the compressor oil on an early 90's Toy w/o removing it or opening the lines? e.g. drain plug.
Deets: The a/c finally died on my 93 Toy pickup. Not cold anymore. AFAIK it's all original, still R12... in the 13 years I've had it it's never been touched.
Refiling R12 is out of the question, might as well convert and diagnose simultaneously.
swapped fittings, took a reading, still a little pressure. After accidentally releasing the shrader valve and finding I had an empty system I'm currently drawing vacuum on it. Thus far it'll go down to 25 bars and hold there, we'll see what happens overnight. I'm suspicious it just has juuuust enough of a leak that after all the years it fell below threshold.
I know I should drain any remnants of the old oil out, which is likely mineral oil or something else, and refill w PAG. What I don't know is... where, or if, the drain line exists on the compressor. Or is it maybe someplace else?
Deets: The a/c finally died on my 93 Toy pickup. Not cold anymore. AFAIK it's all original, still R12... in the 13 years I've had it it's never been touched.
Refiling R12 is out of the question, might as well convert and diagnose simultaneously.
swapped fittings, took a reading, still a little pressure. After accidentally releasing the shrader valve and finding I had an empty system I'm currently drawing vacuum on it. Thus far it'll go down to 25 bars and hold there, we'll see what happens overnight. I'm suspicious it just has juuuust enough of a leak that after all the years it fell below threshold.
I know I should drain any remnants of the old oil out, which is likely mineral oil or something else, and refill w PAG. What I don't know is... where, or if, the drain line exists on the compressor. Or is it maybe someplace else?