Heater Core Case: Service and Repair

HEATER CORE AND EVAPORATOR CORE HOUSING












Removal and Installation

NOTE:
- The heater core and evaporator core are not individually serviced. They are serviced only with the heater core and evaporator core housing.
- If a heater core leak is suspected, the heater core must be leak tested before it is removed from the vehicle. Testing and Inspection
- Installation of a new suction accumulator is not required when repairing the air conditioning system except when there is physical evidence of contamination from a failed A/C compressor or damage to the suction accumulator. Accumulator HVAC

1. Recover the refrigerant. Refrigerant
2. Remove the instrument panel. Refer to: Body and Frame, Interior Moulding/Trim, Dashboard/Instrument Panel, Service and Repair, Instrument Panel, Instrument Panel

3. Clamp off and disconnect the heater core inlet and outlet hoses at the heater core.
4. Remove the 2 evaporator core fitting nuts and disconnect the evaporator core fitting.
- Discard the O-ring seals.
- To install, tighten to 8 Nm (71 lb-in).

5. Remove the 2 exterior heater core and evaporator core housing nuts at the dash panel.
- To install, tighten to 7 Nm (62 lb-in).

6. Detach the antenna cable from the heater core and evaporator core housing.
7. Remove the interior heater core and evaporator core housing nut.
- To install, tighten to 5 Nm (44 lb-in).

8. Remove the heater core and evaporator core housing.
9. To install, reverse the removal procedure.
- Install new O-ring seals.
- Lubricate the refrigerant system with the correct amount of clean PAG oil. Refrigerant Oil

10. Fill the engine cooling system. Cooling System
11. Evacuate, leak test and charge the refrigerant system. Refrigerant