Evaporator Core: Service and Repair

A/C Evaporator Core Replacement

1. Recover the refrigerant with a recovery/recycling/charging station. A/C Refrigerant Recovery

2. Remove the bolt from the A/C line clamp (A).






3. Remove the bolt, then disconnect the A/C line (A) from the evaporator core. Replace the O-rings (B).

4. Remove the blower unit. Blower Unit Removal/Installation






5. Disconnect the power transistor connector (A). Detach the harness clip (B). Remove the self-tapping screws, the joint duct (C), and the seal (D).






6. Carefully pull out the evaporator core (A) without bending the lines, then remove the plate (B).
NOTE: Be careful not to damage the wire harness.

7. Install the core in the reverse order of removal, and note these items:
- If you're installing a new evaporator core, add refrigerant oil (DENSO ND-OIL 8). Service and Repair

- Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before installing them. Be sure to use the correct O-rings for HFC-134a (R-134a) to avoid leakage.

- Immediately after using the oil, reinstall the cap on the container, and seal it to avoid moisture absorption.

- Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts the paint, wash it off immediately.

- Make sure that there is no air leakage.

- Charge the system. A/C System Charging