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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 950 (Climate Control System (Service Information - (Front Heater & A/C Unit) CAEB, CGXB, CEUC, CTUA, CEUC, CAED, CHJA, CPNB, CRDB, CPNB, CREC, CTGE, CYNB, CWUC, CREH, CWUB)) >> Air Conditioning >> Front Heater And A/C Unit >> Overview - Evaporator Housing

Overview - Evaporator Housing

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NOTE:

The following illustration shows an evaporator housing with a service evaporator as it was installed for refrigerant R134a. For vehicles with refrigerant R1234yf, separable connection points may no longer be in the vehicle interior. Therefore the evaporator -Item 20-  OVERVIEW - EVAPORATOR HOUSING only has permanently attached refrigerant pipes (-Item 2-  OVERVIEW - EVAPORATOR HOUSING and -Item 5-  OVERVIEW - EVAPORATOR HOUSING) for these vehicles. Refer to the Parts information.

Fig 1: Evaporator Housing Exploded View
GWWA87-10983Courtesy of AUDI OF AMERICA, LLC
  1. Evaporator Housing Lower Section
  2. Refrigerant Pipe to Evaporator
    • Refrigerant pipes are permanently connected to the evaporator at the factory. If a repair is required on a vehicle with refrigerant R134a, an evaporator is sent that has the refrigerant pipes secured to the evaporator via a connection point. Refer to EVAPORATOR, REMOVING AND INSTALLING  and the Parts information.
    • Removing and Installing, Vehicles with Refrigerant R134a. Refer to EVAPORATOR, REMOVING AND INSTALLING .
    • Not planned for vehicles with refrigerant R1234yf (and for vehicles with refrigerant R134a where the evaporator is not available with a connection point to the refrigerant pipes).
      NOTE:

      For vehicles with refrigerant R1234yf, the refrigerant pipes are permanently attached to the evaporator. Since there cannot be any separating points in the vehicle interior, there cannot be an evaporator installed here with separating points to the refrigerant pipes.

      For refrigerant R1234yf, there must not be any separable connection points in the refrigerant circuit in the vehicle interior (for example, separating points on the refrigerant lines to the evaporator). Therefore the heater and A/C unit must always be removed (with the evaporator housing) on these vehicles and the evaporator with the refrigerant lines must be completely replaced. Refer to the Parts information and EVAPORATOR HOUSING, REMOVING AND INSTALLING .

  3. Retaining Plate
    • From the repair kit for the evaporator
    • To tighten the refrigerant pipe on the evaporator
      NOTE:

      Only for vehicles with refrigerant R134a; additional information -Item 2-  OVERVIEW - EVAPORATOR HOUSING

  4. Bolt
    • 5 Nm
    • From the repair kit for the evaporator
      NOTE:

      Only for vehicles with refrigerant R134a; additional information -Item 2-  OVERVIEW - EVAPORATOR HOUSING

  5. Refrigerant Pipe to Evaporator
    • From the repair kit for the evaporator
    • 5 Nm
      NOTE:

      Only for vehicles with refrigerant R134a; additional information -Item 2-  OVERVIEW - EVAPORATOR HOUSING

  6. O-Ring Seal
    • Replacing. For the correct version. Refer to the Parts information.
    • Coat lightly with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
  7. Grommet
  8. Retaining Plate
    • To secure the refrigerant line and secure the expansion valve
  9. Expansion Valve
  10. Bolt
  11. Support Ring
    • The boot contact pressure increases on the plenum chamber bulkhead
  12. O-Ring Seal
    • Replacing. For the correct version. Refer to the Parts information.
    • Coat lightly with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
  13. O-Ring Seal
    • Replacing. For the correct version. Refer to the Parts information.
    • Coat lightly with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
      NOTE:

      Only for vehicles with refrigerant R134a; additional information -Item 2-  OVERVIEW - EVAPORATOR HOUSING

  14. Cover
    • For the refrigerant pipe to the evaporator
    • There are different versions. Refer to the Parts information.
  15. Bolt
  16. Bolt
  17. Evaporator Housing Upper Section
  18. Bolt
  19. Cover
    • For evaporator
    • Replace separately if a repair is required; repair kit (only on vehicles with refrigerant R134a where the evaporator is not available with a connection point to the refrigerant pipes. Refer to EVAPORATOR, REMOVING AND INSTALLING  and the Parts information.
    • Glued into the evaporator housing when installing the replacement evaporator (only for vehicles with refrigerant R134a). Refer to EVAPORATOR, REMOVING AND INSTALLING .
    • Removing and installing, Only for Vehicles with Refrigerant R134a. Refer to EVAPORATOR, REMOVING AND INSTALLING .
    • Removing and installing not planned for vehicles with refrigerant R1234yf (and for vehicles with refrigerant R134a where the evaporator is not available with a connection point to the refrigerant pipes). Refer to EVAPORATOR HOUSING, REMOVING AND INSTALLING .
      NOTE:

      Refrigerant pipes are permanently connected to the evaporator at the factory. If a repair is required on a vehicle with refrigerant R134a, an evaporator is sent that has the refrigerant pipes secured to the evaporator via a connection point. Refer to EVAPORATOR, REMOVING AND INSTALLING  and the Parts information.

      For refrigerant R1234yf, there must not be any separable connection points in the refrigerant circuit in the vehicle interior (for example, separating points on the refrigerant lines to the evaporator). Therefore the heater and A/C unit must always be removed (with the evaporator housing) on these vehicles and the evaporator with the refrigerant lines must be completely replaced. Refer to the Parts information and EVAPORATOR HOUSING, REMOVING AND INSTALLING .

  20. Evaporator
    • Refrigerant pipes are permanently connected to the evaporator at the factory. If a repair is required on a vehicle with refrigerant R134a, an evaporator is sent that has the refrigerant pipes secured to the evaporator via a connection point. Refer to EVAPORATOR, REMOVING AND INSTALLING  and the Parts information.
    • Removing and installing, Vehicles with Refrigerant R134a. Refer to EVAPORATOR, REMOVING AND INSTALLING .
    • Removing and installing, Vehicles with Refrigerant R1234yf (and vehicles with refrigerant R134a where the evaporator is not available with a connection point to the refrigerant pipes). Refer to EVAPORATOR HOUSING, REMOVING AND INSTALLING .
      NOTE:

      For vehicles with refrigerant R1234yf, the refrigerant pipes are permanently attached to the evaporator. Since there cannot be any separating points in the vehicle interior, there cannot be an evaporator installed here with separating points to the refrigerant pipes.

      For refrigerant R1234yf, there must not be any separable connection points in the refrigerant circuit in the vehicle interior (for example, separating points on the refrigerant lines to the evaporator). Therefore the heater and A/C unit must always be removed (with the evaporator housing) on these vehicles and the evaporator with the refrigerant lines must be completely replaced. Refer to the Parts information and EVAPORATOR HOUSING, REMOVING AND INSTALLING .

  21. O-Ring Seal
    • Replacing. For the correct version. Refer to the Parts information.
    • Coat lightly with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
  22. Air Distribution Housing
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