Repair Procedures: Replacement

Disconnect the negative (-) battery terminal.
Recover the refrigerant with a recovery/recycling/charging station.
When the engine is cool, drain the engine coolant from the radiator.
(Refer to Engine Mechanical System - "COOLANT ")
Remove the heater & blower assembly.
(Refer to Heater - "Heater Unit ")
Remove the blower unit (B) from heater unit after loosening 3 screws.

Fig 1: Locating Blower Unit With Mounting Screws
Courtesy of HYUNDAI MOTOR AMERICA

Fig 2: Locating Blower Unit With Mounting Screw
Courtesy of HYUNDAI MOTOR AMERICA
Loosen the mounting screw and then remove the heater core cover (A).

Fig 3: Locating Heater Core Cover With Mounting Screws
Courtesy of HYUNDAI MOTOR AMERICA
Remove the heater core (A) from heater unit.

Fig 4: Locating Heater Core
Courtesy of HYUNDAI MOTOR AMERICA
NOTE:
- Be careful that the inlet and outlet pipe are not bent during heater core removal/installation.
Installation is the reverse order of removal
NOTE:
- If you"re installing a new evaporator, add refrigerant oil (ND-OIL8).
- Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before installing them. Be sure to use the right O-rings for R-134a to avoid leakage.
- Immediately after using the oil, replace the cap on the container, and seal it to avoid moisture absorption.
- Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts the paint, wash it off immediately
- Apply sealant to the grommets.
- Make sure that there is no air leakage.
- Charge the system and test its performance.
- Do not interchange the inlet and outlet heater hoses and install the hose clamps securely.
- Refill the cooling system with engine coolant