It's had a R134a conversion as well looking at the fittings. I bet it had a leak due to a failed front seal on the compressor.
Problem is you have no idea what oil is in there so really you are taking all that A/C stuff off, flushing it, replacing the orifice tube, adding the right oil and recharging.
Problem is you have no idea what oil is in there so really you are taking all that A/C stuff off, flushing it, replacing the orifice tube, adding the right oil and recharging.