Back to the original question. If you have an overcharged system, not only will it try to blow out the weakest link, it will reduce performance and create other problems. It you have a solid system with no high pressure valve it is even worse.

A few years back, I got lazy and had my secretary's husband (who owned an auto repair shop) repair the A/C on my '67 Mustang. The system got overcharged. Not only did it not cool very well, it sapped the power from the engine and ended up bending the mounting brackets for the compressor.

As Moses said "Let my freon go"

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1983 300SD "Guderian"
1987 MR2
2015 Camry
2015 Chevy Spark
2006 Hyundai Tucson