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Home >> Porsche >> 2020 >> Macan Turbo >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> 82 Auxiliary Heating -- 95B - MACAN (95B) >> WM, 822037 - Disassembling And Assembling Heater >> Disassembling And Assembling Heater >> Disassembling Heater

Disassembling Heater

  1. Disassemble heater.
    Fig 1: Overview Of Heater Component Locations
    G15161980Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Component overview of heater

    1. 1.1  Unscrew screws -8-  and lift up cover for control unit -10-  .
    2. 1.2  Release clip -9-  at the bottom, push it up and remove cover for control unit -10-  .
    3. 1.3  Unscrew screws -3-  and carefully remove cover for combustion air blower -4-  from the fuel connection for the fuel evaporator -34-  .
    4. 1.4  Disconnect plug connection -7-  on the heater control unit -6-  .
    5. 1.5  Unscrew screws -11-  and remove together with retaining clips -12-  and -13-  .
    6. 1.6  Carefully pull off overheating sensor -14-  and surface sensor -15-  .
    7. 1.7  Remove control unit -6-  with wiring harness.
    8. 1.8  Unscrew screws -1-  and remove cover on electric motor -2-  .
    9. 1.9  Remove combustion air blower -5-  .
      1. 1.9.1  Release both plug contacts for the combustion air blower from connector housing -7-  using release tool VAS 1978/35-42  (from the > VAS 1978/35-33 - release tool set)  .
      2. 1.9.2  Pull fuel cut-off switch -33-  with the graphite sleeve and the sleeve on the wiring harness out of the groove on the combustion air housing.
    10. 1.10  Release both plug contacts for the fuel cut-off switch -33-  from connector housing -7-  using release tool VAS 1978/35-42  (from the > VAS 1978/35-33 - release tool set)  .
    11. 1.11  Remove glow spark plug -19-  .
      1. 1.11.1  Release both plug contacts for the glow spark plug from connector housing -7-  using release tool VAS 1978/18  (from the > VAS 1978/35-33 - release tool set)  .
      2. 1.11.2  Pull glow spark plug out of the combustion chamber insert -24-  .
    12. 1.12  Remove seal -25-  .
    13. 1.13  Remove combustion chamber insert -24-  from housing with heat exchanger -20-  .
      1. 1.13.1  Release both plug contacts for the combustion chamber insert -24-  from the connector housing -7-  using release tool VAS 1978/35-42  (from the > VAS 1978/35-33 - release tool set)  .
      2. 1.13.2  Remove combustion chamber insert -24-  .
      3. 1.13.3  Remove seal -23-  .
    14. 1.14  Remove wiring harness with overheating sensor -14-  and surface sensor -15-  .
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