This is on the '90 dually...
This thing has sat along time without any attention to the a/c system. I bought a retro kit to convert the R12 over to 134a which included the 134a compatable oil and the fittings for the schrader valves.
I evac'd the system, send the oil in, and charged it up. Long story short, it ran cold for awhile then stopped. The line on the back side of the orface was still ice cold while the other side became hot. I.E. blockage.
I figured I'd replace the dryer and orface and flush the system, add new oil and refrigerant and go from there.
First, when I pulled the compressor, to drain the old mineral oil out, it seemed pretty dry. Then when I popped the line to get to the orface I ended up with a load of what looks like dried up oil junk (looks like carbon deposits).
Questions:
-The old orface doesn't want to come out of the tube, any tricks?
-what is the oil capacity of the sytem?
-any other .02 would be greatly appreciated.
This thing has sat along time without any attention to the a/c system. I bought a retro kit to convert the R12 over to 134a which included the 134a compatable oil and the fittings for the schrader valves.
I evac'd the system, send the oil in, and charged it up. Long story short, it ran cold for awhile then stopped. The line on the back side of the orface was still ice cold while the other side became hot. I.E. blockage.
I figured I'd replace the dryer and orface and flush the system, add new oil and refrigerant and go from there.
First, when I pulled the compressor, to drain the old mineral oil out, it seemed pretty dry. Then when I popped the line to get to the orface I ended up with a load of what looks like dried up oil junk (looks like carbon deposits).
Questions:
-The old orface doesn't want to come out of the tube, any tricks?
-what is the oil capacity of the sytem?
-any other .02 would be greatly appreciated.
