Diesel Data: Automotive Repair

Heater Core Replacement - HVAC System - Manual

REMOVAL PROCEDURE




1. Disconnect the heater hoses at the heater core.
2. Remove the instrument panel insulators.
3. Remove the front floor console.

IMPORTANT: Position the heater core cover downward and rearward in order to disconnect the cover from the rear area floor duct assembly.

4. Remove the heater core outlet cover screws.
5. Remove the heater core outlet cover.




6. Remove the heater core cover screws.
7. Remove the heater core cover.




8. Remove and discard the seals (1,2,3) from the heater core cover.




9. Remove and discard the heater core outer seal (5) from the heater core.




10. Remove the heater core clamp screw (1).
11. Remove the heater core retaining clamp.
12. Remove the heater core pipe retainer clamp screw (2).




13. Remove the heater core from the HVAC lower case.




14. Remove and discard the heater core lower seal (4) from the HVAC case.




15. Remove and discard the heater core center seal (3) from the HVAC case.




16. Remove and discard the heater core upper seal (2) from the HVAC lower case.




17. Remove and discard the heater core side seals (1) from the HVAC lower case.

INSTALLATION PROCEDURE




1. Install the heater core side seals (1) from the HVAC lower case.




2. Install the heater core upper seal (2) from the HVAC lower case.




3. Install the heater core center seal (3) from the HVAC case.




4. Install the heater core lower seal (4) from the HVAC case.




5. Install the heater core from the HVAC lower case.

NOTE: Refer to Fastener Notice in Service Precautions.




6. Install the heater core line clamp screw (2).

Tighten
Tighten the screw to 1.5 N.m (13 lb in).

7. Install the heater core mounting clip with a screw (1).

Tighten
Tighten the screw to 1.5 N.m (13 lb in)




8. Install heater core outer seal (5) to the heater core.




9. Install new seals (1,2,3) to the heater core cover.




10. Install the heater core cover.
11. Install the heater core cover screws.

Tighten
Tighten the heater core cover screws to 1.5 N.m (13 lb in).




12. Install the heater core outlet cover.
13. Install the heater core outlet cover screws.

Tighten
Tighten the heater core outlet cover screws to 1.5 N.m (13 lb in).

14. Install the front floor console.
15. Install instrument panel insulators.
16. Install the heater hoses to the heater core.