When replacing a compressor due to failure, it is important to completely flush and purge the system. The TXV can be damaged by small debris and should be replaced; it has to come off to flush the evaporator anyway. The dryer should be replaced whenever the system is flushed for the obvious reason, and also because it will trap anything coming through the condenser. I don't know if you have a parallel-flow condenser, but these are extremely difficult to flush and purge. Old tube-and-fin condensers are no problem to flush and purge.