Heater Core

Repair Procedures

Replacement

1. 1

   Disconnect the negative (-) battery terminal.

2. 2

   Loosen the nuts and bolts, then remove the main protector and the cross member assembly cover.

   (See Heater - Heater)

3. 3

   Remove the heater radiator (A).

   

4. 4

   Install in the reverse order of removal.

   • Replace the O-rings with new ones at each fitting and apply a thin coat of refrigerant oil before installation. Be sure to use O-rings suitable for R-134a and R-1234yf to prevent leaks.

   • Close the oil container cap immediately after use and seal it to prevent moisture absorption.

   • Do not spill refrigerant oil on the vehicle, as it may damage the paint. If refrigerant oil gets on the paint, wash it off immediately.

   • Apply sealant to the bushings.

   • Check that there is no air leakage.

   • Charge the system and check that it operates properly.

   • Do not interchange the heater inlet and outlet hoses, and make sure the hose is securely connected.

   • Fill the cooling system with engine coolant.