To validate warranty these steps need to be followed when installing: 1) Check Compressor prior to installation for air gap in clutch. 2) Check compressor for proper oil amount per manufacturers recommendation. 3) Flush A/C system with proper flush and flushing method. 4) Replace filter drier / accumulator. 5) Replace expansion valve / orifice tube. 6) Check for proper airflow through cooling fins of condenser and radiator. 7) Evacuate system to deep vacuum, 29.95 in.-HG, inches of vacuum. 8) Ch