Removal and Replacement

HEATER CORE AND EVAPORATOR CORE HOUSING REMOVAL/INSTALLATION









NOTE:If a heater core leak is suspected, the heater core must be leak tested before the heater core is removed. See - Testing and Inspection.
1. Drain the engine coolant. See Removal and Replacement.

2. Recover the refrigerant. See Air Conditioning (A/C) System Discharging And Recovery.

3. Remove the instrument panel. See Instrument Panel Removal/Installation.

4. Remove the thermostatic expansion valve (TXV) fitting nut and disconnect the fitting.

- Discard the gasket seals.
- To install, tighten to 15 Nm {1.5 kgf-m, 133 in-lbf}.

5. Release the clamps and disconnect the heater inlet and outlet hoses from the heater core.

6. Remove the 6 heater core and evaporator core housing nuts.

- To install, tighten to 9 Nm {0.9 kgf-m, 80 in-lbf}.

7. Remove the heater core and evaporator core housing in the following sequence.
a. Detach the heater core and evaporator core housing from the dash panel studs.

b. Rotate the RH side of the heater core and evaporator core housing toward the rear of the vehicle while pulling the housing toward the RH door opening to detach it from the rear footwell duct.

c. Remove the heater core and evaporator core housing.

8. Disassemble the heater core and evaporator core housing as needed.

9. To install, reverse the removal procedure.

- Install new gasket seals.
- Lubricate the refrigerant system with the correct amount of clean PAG oil. See Refrigerant Oil Adding.

10. Fill and bleed the engine cooling system. See Removal and Replacement.

11. Evacuate, leak test and charge the refrigerant system. See Air Conditioning (A/C) System Evacuation And Charging.