Freon has escaped through a leak on the compressor. Is changing the compressor as straight forward as unbolting the old one and puting in the new one and then recharging the system.

I am planning to change the compressor with a rebuilt myself. All those who have done this any tips.

Also does the dryer need to be replaced when the compressor is changed or I can leave the old drier.

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SANDEEEP
89 300SEL
230,000Km