I didn't ask them about why the seals might be blowing-out while charging because at the time I didn't know I had the problem. I replaced the original compressor with a remanufactured one and changed from R-12 to R-134a. After I charged the system it would cool on warm days but shut-off on hot days ...

Thank you for the quick response and here are some additional details. I have two compressors that have both been professionally rebuilt by a local shop called Austin Rebuilders, Inc.

I am having problems and am in need of some advice as to what maybe the problem. I have blown-out two compressor shaft seals while trying to charge the system. From the beginning of the charge it was difficult to add to the system even when it has been evacuated. I tried to add part of the can to th...