Overview - Evaporator Housing

The overview shows a LHD vehicle as an example. The component layout is a mirror image for RHD vehicles.

• Currently the evaporator is delivered with the evaporator housing as a replacement part, for this reason do not disassemble the evaporator. If the evaporator is delivered later as a replacement part, then disassemble the evaporator housing. Refer to the Parts Information.
• For better illustration of the design of the evaporator housing, a disassembled evaporator housing is shown in the following figure.
• The evaporator housing with an evaporator as installed during production of the vehicle is currently available completely preinstalled as a replacement part. Refer to the Parts Information.

Fig 1: Exploded View Of Evaporator Housing

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 5.5 Nm
2. Expansion Valve
   • Refrigerant Line, Removing and Installing at Expansion Valve. Refer to FRONT EXPANSION VALVE, REMOVING AND INSTALLING .
   • Removing and Installing. Refer to FRONT EXPANSION VALVE, REMOVING AND INSTALLING .
3. Retaining Pate
4. O-Ring
   • Replace after removing. Refer to REFRIGERANT CIRCUIT SEALS .
   • Allocation. Refer to the Parts Information.
5. O-Ring
   • Replace after removing. Refer to REFRIGERANT CIRCUIT SEALS .
   • Allocation. Refer to the Parts Information.
6. Support Ring
   • The support ring increases the pressure of the grommet on the plenum chamber rear panel
   • Check the seating of the support ring in the grommet. Refer to FRONT EXPANSION VALVE, REMOVING AND INSTALLING .
7. Grommet
   • For sealing the holes through the plenum chamber rear panel for the refrigerant lines
   • With support ring for sealing in the plenum chamber rear panel. Refer to FRONT EXPANSION VALVE, REMOVING AND INSTALLING .
   • Currently a component of the "evaporator housing" replacement part. Refer to Parts Information.
8. Bolt
   • 1 Nm
9. Insulation
   • Installed between the air duct in the air distribution housing and in the resonator chamber in the air distribution box.
10. Evaporator Housing Upper Section
11. Catch
    • Open carefully
12. Evaporator Housing Lower Section
    • Both housing halves are held together via the bolts -Item 8-  OVERVIEW - FRONT HEATER AND A/C UNIT ATTACHMENTS, AIR DISTRIBUTION HOUSING, HEAT EXCHANGER, ETC. List Item:Bolt and the catches -Item 11-  OVERVIEW - EVAPORATOR HOUSING List Item:Catch.
    • Check for debris and if necessary clean before assembling both housing halves
    • Check the groove and spring connection to the evaporator housing upper section for damage.
    • Damaged or incorrectly joined connections can result in noises during operation.
13. Cap
    • For the connection to the glove compartment cooling
    • Only installed on vehicles without the "glove compartment cooling" optional equipment. Refer to AIR GUIDE FOR GLOVE COMPARTMENT COOLING, REMOVING AND INSTALLING .
14. Seal
    • Check for damage and the correct assembly on the evaporator.
15. Evaporator
    • Delivered as replacement evaporator part with various components needed for installation (evaporator housing, O-ring seals, expansion valve etc.). Refer to the Parts Information.
    • Inspect the bonded foam seals for damage and that it is correctly bonded
    • Removing and Installing. Refer to EVAPORATOR IN FRONT HEATER AND A/C UNIT, REMOVING AND INSTALLING .