AMC Coupes/Sedans/Wagons 1975-1988 Repair Information

Heater Core

Print

REMOVAL & INSTALLATION - Matador



See Figures 1 and 2

Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the heater assembly on Matador models equipped with air conditioning



Click image to see an enlarged view

Fig. Fig. 2: Exploded view of the Matador heater assembly on models without air conditioning

  1. Disconnect the negative battery cable.
  2.  
  3. Drain about 2 quarts of coolant from the cooling system.
  4.  


CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

  1. Disconnect the heater hoses from the heater core in the engine compartment and plug the core tubes.
  2.  
  3. On air conditioned cars, disconnect the blend-air damper cable at the heater core housing and remove the fuse panel. On non-A/C cars, disconnect the blend-air damper door and fresh air door cables.
  4.  
  5. Remove the lower instrument finish panel and remove the glove box door and liner.
  6.  
  7. Remove the right windshield pillar and corner finish moldings for access to the upper right heater core housing mounting screws.
  8.  
  9. On air conditioned cars, remove the vacuum motor hoses.
  10.  
  11. Remove the remaining heater core housing attaching screws.
  12.  
  13. On air conditioned cars, remove the capscrew retaining the instrument panel to the right body pillar. Pull the right side of the instrument panel slightly rearward.
  14.  
  15. Remove the heater core housing and heater core. Remove the heater core from the housing.
  16.  
  17. Install the heater core and housing in the reverse order of removal.
  18.  

Gremlin, Hornet, Concord, Spirit and Eagle See Figure 3

Click image to see an enlarged view

Fig. Fig. 3: Exploded view of the heater assembly on models without air conditioning except Matador and Pacer

  1. Disconnect the negative battery cable and drain 2 qts. of coolant.
  2.  
  3. Disconnect the heater hoses and plug the hoses and core fittings.
  4.  
  5. Disconnect the blower wires and remove the motor and fan assembly.
  6.  
  7. Remove the housing attaching nut from the stud in the engine compartment.
  8.  
  9. Remove the package shelf, if so equipped.
  10.  
  11. Disconnect the wire at the resistor, located below the glove box.
  12.  
  13. Remove the instrument panel center bezel, air outlet, and duct on A/C models.
  14.  
  15. Disconnect the air and defroster cables from the damper levers.
  16.  
  17. Remove the right side windshield pillar molding, the instrument panel upper sheet metal screws and the cap screw at the right door post.
  18.  
  19. Remove the right cowl trim panel and door sill plate.
  20.  
  21. Remove the right kick panel and heater housing attaching screws.
  22.  
  23. Pull the right side of the instrument panel outward slightly and remove the housing.
  24.  
  25. Remove the core, defroster and blower housing.
  26.  
  27. Remove the core from the housing.
  28.  
  29. Installation is the reverse of removal.
  30.  

Pacer


CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old. See Figures 4 and 5



Click image to see an enlarged view

Fig. Fig. 4: Exploded view of the heater assembly on Pacer models without air conditioning



Click image to see an enlarged view

Fig. Fig. 5: Exploded view of the heater assembly on Pacer models with air conditioning

  1. Drain about two quarts of coolant from the radiator.
  2.  
  3. Disconnect the heater hoses from the heater core tubes and install plugs in the heater hoses.
  4.  
  5. Remove the vacuum hoses from the heater core housing cover clip and move the lines aside.
  6.  
  7. Remove the heater core housing cover screws.
  8.  
  9. Disconnect the overcenter spring from the cover and remove the cover.
  10.  
  11. Remove the heater core-to-housing attaching screws and remove the heater core.
  12.  
  13. Install the heater core in the reverse order of removal.
  14.  

 
label.common.footer.alt.autozoneLogo