Toyota Corolla 1970-1987 Repair Guide

Heater Unit

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REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable. Drain the cooling system.
  2.  
  3. Remove the cooling unit, if so equipped-refer to the necessary service procedures.
  4.  
  5. Remove the heater hose clamps. Disconnect the heater hoses from the heater core. Remove the heater core pipe grommet.
  6.  
  7. Remove the instrument panel-refer to the necessary service procedure.
  8.  
  9. Remove the instrument panel reinforcement and bracket.
  10.  
  11. Remove the duct heater to register and remove the front defroster nozzle.
  12.  
  13. Remove the heater unit.
  14.  

To install:
  1. Install the heater unit in the vehicle.
  2.  
  3. Install the front defroster nozzle and duct heater to register.
  4.  
  5. Install the instrument panel reinforcement braces.
  6.  
  7. Install the instrument panel assembly.
  8.  
  9. Install the heater core pipe grommets. Push the water hoses onto the heater core pipes as far as the ridge on the pipes. Reconnect the heater hoses use NEW hose clamps if necessary.
  10.  
  11. Install the cooling unit assembly. Refill the cooling system.
  12.  
  13. Connect the negative battery cable. Check operation of heater and A/C system.
  14.  

 
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