Hyundai Elantra AD Quiz
Heating, Ventilation, and Air Conditioning

Evaporator Core Repair Procedures

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 9Engine Mechanical System — 84Engine Electrical System — 60Emission Control System — 24Engine Control System/Fuel System — 90Automatic Transmission — 92Drive Shaft and Axle — 20Suspension System — 31Steering — 20Restraints — 50Brake System — 63Body (Interior and Exterior) — 214Body Electrical System — 221Heating, Ventilation, and Air Conditioning — 71
5steps
~30min
2/5difficulty
Done 0 of 5

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Remove the heater and blower assembly. (Refer to Heater - "Heater")
  3. Remove the lower heater cover (A) after loosening the mounting screws.
  4. Pull out the evaporator core (A) from the heater unit.
  5. To install, reverse the removal procedure.
    A. If installing a new heater core, add refrigerant oil (PAG oil).
    B. Replace the O-rings with new ones at each fitting and apply a thin coat of refrigerant oil before installation. Be sure to use the correct O-rings for R-134a to prevent leakage.
    C. Immediately after use, close the container with its cap to prevent moisture absorption.
    D. Do not spill refrigerant oil on the vehicle; it may damage the paint. If refrigerant oil gets on the paint, wipe it off immediately.
    E. Apply sealant to the bushings.
    F. Check that there is no air leakage.
    G. Charge the system and check that it operates properly.
    H. Do not reverse the inlet and outlet heater hoses, and securely install the hose clamps.

Test yourself

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