Housing Assembly HVAC: Service and Repair

Auxiliary Heater Core and Evaporator Core Housing

Removal
1. Carry out the air conditioning (A/C) system recovery procedure.
2. Remove the heater core.
3. Disconnect the auxiliary heater core and evaporator core housing electrical connector.







NOTE: Remove and discard the auxiliary evaporator outlet and inlet line O-ring seals.

4. Detach the auxiliary evaporator outlet and inlet lines.
- Remove the auxiliary evaporator outlet and inlet line retaining bolts.







5. Remove the auxiliary heater core and evaporator core housing retaining nut.







6. Remove the auxiliary heater core and evaporator core housing retaining nut.







7. Remove the auxiliary heater core and evaporator core housing.
- Remove the auxiliary heater core and evaporator core housing retaining nut.







Installation
1. Install the auxiliary heater core and evaporator core housing.
- Install the auxiliary heater core and evaporator core housing retaining nut.
- Tighten to 4 Nm.







2. Install the auxiliary heater core and evaporator core housing retaining nut.
- Tighten to 4 Nm.







3. Install the auxiliary heater core and evaporator core housing retaining nut.
- Tighten to 4 Nm.







NOTE: Install new auxiliary evaporator outlet and inlet line O-ring seals.

4. Attach the auxiliary evaporator outlet and inlet lines.
- Install the auxiliary evaporator outlet and inlet line retaining bolts.
- Tighten to 2 Nm.







5. Connect the auxiliary heater core and evaporator core housing electrical connector.







6. Install the heater core.
7. Carry out the A/C system evacuation and charging procedure.