Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIGERANT OIL - STANDARD PROCEDURE - REFRIGERANT OIL LEVEL). Failure to properly adjust the refrigerant oil level will prevent the A/C system from operating as designed and can cause serious A/C compressor damage.When replacing multiple A/C system components, refer to the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant system(refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIGERANT OIL - STANDARD PROCEDURE - REFRIGERANT OIL LEVEL).If only the A/C evaporator is being replaced, add 50 milliliters (1.7 fluid ounces) of refrigerant oil to the refrigerant system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.Replacement of the refrigerant line O-ring seals and gaskets is required anytime a refrigerant line is opened. Failure to replace the rubber O-ring seals and metal gaskets could result in a refrigerant system leak.Make sure that the evaporator drain within the HVAC housing is clean and unrestricted and that the insulator is properly positioned.

If the foam insulator for the evaporator is deformed or damaged, it must be replaced.Install the A/C evaporator (1) into the HVAC housing (3). Make sure that the evaporator drain within the HVAC housing is clean and unrestricted and that the insulator (2) around the A/C evaporator is properly positioned.

Install the flange (3) onto the top of the HVAC housing (4).Install the four screws (1) that secure the flange to the HVAC housing. Tighten the screws to 1.2 N·m (10 in lbs.).If the foam seal for the flange is deformed or damaged, it must be replaced.Install the foam seal (2) onto the flange.Install the A/C expansion valve onto the A/C evaporator (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/VALVE-A/C EXPANSION - INSTALLATION).Install the air distribution housing onto the HVAC housing (refer to 24 - HEATING & AIR CONDITIONING/DISTRIBUTION/HOUSING-HVAC - HOUSING-AIR DISTRIBUTION - INSTALLATION).Install the HVAC housing assembly (refer to 24 - HEATING & AIR CONDITIONING/DISTRIBUTION/HOUSING-HVAC - HOUSING-HVAC ASSEMBLY - INSTALLATION).If the A/C evaporator is being replaced, add 50 milliliters (1.7 fluid ounces) of refrigerant oil to the refrigerant system. When replacing multiple A/C system components, refer to the Refrigerant Oil Capacities chart to determine how much oil should be added to the refrigerant system (refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIGERANT OIL - STANDARD PROCEDURE - REFRIGERANT OIL LEVEL). Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.