Overview - Evaporator Housing

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

Screw
- 5.5 Nm
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 .
Retaining Pate
O-Ring
- Replace after removing. Refer to REFRIGERANT CIRCUIT SEALS .
- Refer to the Parts Information for the allocation.
O-Ring
- Replace after removing. Refer to REFRIGERANT CIRCUIT SEALS .
- Refer to the Parts Information for the allocation.
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 .
Boot
- 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.
Screw
- 1 Nm
Insulation
- Installed between the air duct in the air distribution box and in the resonator chamber present in the air distribution box.
Evaporator Housing Upper Section
Catch
- Open carefully
Evaporator Housing Lower Section
- Both housing halves are held together via the bolts -Item 8- and the catches -Item 11-.
- 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.
Cap
- For the connection to the glove compartment cooling
- Only installed on vehicles without the "glove compartment cooling" optional equipment. Refer to AIR DUCT FOR GLOVE COMPARTMENT COOLING, REMOVING AND INSTALLING .
Seal
- Check for damage and the correct assembly on the evaporator.
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 .