Chrysler Front Wheel Drive Cars 4-CYL 1981-1995 Repair Information

Heater Core

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REMOVAL & INSTALLATION



1981-84 Models
  1. Remove the heater assembly, as described later in this section.
  2.  
  3. Remove the padding from around the heater core outlets and remove the upper core mounting screws.
  4.  
  5. Pry loose the retaining snaps from around the outer edge of the housing cover.
  6.  

If a retaining snap should break, the housing cover has provisions for mounting screws.

  1. Remove the housing top cover.
  2.  
  3. Remove the bottom heater core mounting screw.
  4.  
  5. Slide the heater core out of the housing.
  6.  

To install:
  1. Slide the heater core into the housing.
  2.  
  3. Install the bottom heater core mounting screw until secure.
  4.  
  5. Install the housing top cover and engage the retaining snaps around the outer perimeter of the housing. If the snaps were damaged during removal, install mounting screws.
  6.  
  7. The remainder of installation is the reverse of the removal procedure.
  8.  
  9. Install the heater assembly, as described later in this section.
  10.  

1985-95 Models

For the removal of the heater core, which is located inside the heater-A/C unit assembly, first remove the heater-A/C unit assembly from the vehicle as described later in this section. Once the unit has been removed, use the following procedure to extract the heater core:

  1. Place the heater-A/C unit on a suitable work surface.
  2.  
  3. Locate and remove one retaining nut from the blend-air door pivot shaft.
  4.  
  5. To remove the top cover from the heater-A/C case, the crank arm must be removed.
  6.  
  7. Disconnect the vacuum lines from the defroster and panel mode vacuum actuators and position them out of the way.
  8.  
  9. Remove the 3 heater-A/C unit cover attaching screws, fastened upward at the defroster outlet chamber.
  10.  
  11. Remove the 2 heater-A/C unit cover attaching screws, fastened upward at the air inlet plenum.
  12.  
  13. Remove the 11 heater-A/C unit cover attaching screws, fastened downward into the housing. Then lift the cover from the heater-A/C unit.
  14.  
  15. Remove the old heater core from the case.
  16.  

To install:
  1. Install the new heater core into the heater-A/C unit case in the same position as the the old one.
  2.  
  3. Place the cover onto the case and secure in place with the 11 retaining screws.
  4.  
  5. Install the 2 heater-A/C unit cover attaching screws in the air inlet plenum.
  6.  
  7. Install the 3 heater-A/C unit cover attaching screws in the defroster outlet chamber.
  8.  
  9. Attach the vacuum lines from the defroster and panel mode vacuum actuators to the heater-A/C unit case.
  10.  
  11. Install the crank arm and the retaining nut on the blend-air door pivot shaft.
  12.  
  13. Install the heater-A/C unit assembly into the vehicle.
  14.  

 
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