Heater Core: Removal

CAUTION: Before handling the airbag system components, always refer to "CAUTION" of "General Description" in "AIRBAG SYSTEM". Ref. to AIRBAG SYSTEM>General Description>CAUTION .

Disconnect the ground cable from battery and wait for at least 60 seconds before starting work. Ref. to NOTE>NOTE>BATTERY .
NOTE: For model with battery sensor, disconnect the ground terminal from battery sensor.
Using the refrigerant recovery system, discharge refrigerant. Ref. to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>Refrigerant Recovery Procedure>PROCEDURE .
Drain the coolant from the radiator.
- Non-turbo model: Ref. to COOLING(H4DO)>Engine Coolant>REPLACEMENT>DRAINING OF ENGINE COOLANT .
- Turbo model: Ref. to COOLING(H4DOTC)>Engine Coolant>REPLACEMENT>DRAINING OF ENGINE COOLANT .
Remove the heater and cooling unit assembly. Ref. to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>Heater and Cooling Unit>REMOVAL .
Remove the heater core.
1. Remove the screw and detach the clamp - pipe.
  
  Fig 1: Identifying Heater Core Pipe Clamp Screw
  Courtesy of SUBARU OF AMERICA, INC.
2. Remove the screws and detach the cover - heater pipe.
  
  Fig 2: Locating Heater Core Pipe Cover Screws
  Courtesy of SUBARU OF AMERICA, INC.
3. Remove the clamp, and remove the pipe - inlet and outlet.
  
  Fig 3: Locating Heater Core Inlet And Outlet Pipe Clamps
  Courtesy of SUBARU OF AMERICA, INC.
4. Remove the screws and detach the plate - heater core.
  
  Fig 4: Locating Heater Core Plate Screws
  Courtesy of SUBARU OF AMERICA, INC.
5. Pull out the heater core from the case - heater unit.

Fig 5: Removing Heater Core From Heater Unit Case

Courtesy of SUBARU OF AMERICA, INC.