Thank you Larry for your other response..... Now folks my compressor is shot and I want to replace those parts that are most likely to fail. I do not want to be a penny thrift and a dollar foolish. I am concerned with the do's and don'ts when working with this system! The system has been depressurized, when connecting new parts to the system do I coat the fittings with refrigerant oil ? Should the drier be the last element of the system to be connected? And should the system be flushed before recharging it with R134 ?