Evaporator Core Repair Procedures

REPLACEMENT

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   After loosening the bolts, remove the protective gasket of the main and cowl vent at the same time. (Refer to Heater - "Heater Unit")
3. 3
   Remove the heater and blower unit. (Refer to Heater - "Heater Unit")
4. 4
   After loosening the screws, separate the blower unit (B) from the heater unit (A).

   

   

5. 5
   After loosening the retaining screws, remove the heater core cover (A).

   

6. 6
   Pull out the heater core (A) from the heater unit.

   

7. 7
   After loosening the retaining screws, remove the lower heater cover (A).

   

8. 8
   Pull the evaporator core (A) out of the heater.

   

9. 9
   To install, perform the removal procedure in reverse order.

   • If installing a new evaporator core, add refrigerant oil (PAG oil).
   • Replace the O-rings on each fitting with new ones and coat them with a thin layer of refrigerant oil before installation. To prevent leaks, make sure to use O-rings designed for R-134a refrigerant.
   • Immediately after using the oil, replace the container cap, then tightly close the container to prevent moisture absorption.
   • Be careful not to spill refrigerant oil on the vehicle, as it may damage the paint. If refrigerant oil contacts the paint, wash it off immediately.
   • Apply sealant to the bushings.
   • Make sure there are no air leaks.
   • Charge the system, then check it for proper operation.
   • Do not reverse the heater inlet and outlet hoses, then firmly install the hose clamp.