audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Bottom Section of Housing and Air Distributor Housing, Disassembly and Reassembly|Page 8784 > < Bottom Section of Housing and Air Distributor Housing, Disassembly and Reassembly|Page 8782
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Housing Assembly HVAC: Removal and Replacement
A/C Unit

A/C Unit

Special Tools and Equipment

‹› Hose Clamps (3093 bzw. 3094)

‹› Cooling System Tester (V.A.G 1274) 

‹› Compressed air gun, commercially available

Removing

‹› On removal, note down bolt lengths and assignment for reinstallation. 

‹› All cable ties and other wiring harness fasteners released or cut open on removing air conditioner unit are to be re-attached in same position on

installation.

-

Drain the refrigerant circuit: => Refrigerant R134a - Servicing

-

Switch ignition on.

-

Move power seats to rearmost position.

-

Switch off ignition.

-

Remove dust and pollen filter. Refer to=> [ Dust and Pollen Filter ] .

-

Remove E-box cover and engine control module.

-

Remove dome brace with reinforcement to cowl panel trim. 

-

Remove windshield wiper completely.

-

Remove pump valve unit. Refer to=> [ Pump Valve Unit, Checking ] See: Heater Control Valve/Testing and Inspection/Pump Valve Unit,
Checking. 

-

Protect driver and passenger seat using seat cover.

-

Disconnect negative terminal clamp from Battery (A).

‹› Before disconnecting Battery (A), obtain anti-theft radio security code if necessary.

‹› On vehicles with electrically adjustable seats, move the seats back as far as possible before disconnecting the Battery (A).

-

Remove dash panel complete with dash panel cross member.

-

Remove brake master cylinder and brake booster.

-

Remove complete foot pedal assembly with mounting bracket. 

-

Disconnect refrigerant lines from evaporator connection. Refer to => [ Refrigerant Lines, Disconnecting and Connecting from Evaporator ] See:
Service and Repair/Removal and Replacement.

-

Remove Rotation Rate Sensor (G202).

-

Remove brackets - A - and - B - depending on A/C unit version, only brackets - B - or - A - are installed.

Bottom Section of Housing and Air Distributor Housing, Disassembly and Reassembly|Page 8784 > < Bottom Section of Housing and Air Distributor Housing, Disassembly and Reassembly|Page 8782