Removing and installing air conditioner compressor - vehicles with 6-cyl. engine — AUDI

🧭 Before you start

Fits: Audi Q7 (4M, 2015–)

• Also covered elsewhere: Electronic parts catalogue

Don't miss

• Lubricate O-rings lightly with refrigerant oil before fitting Refrigerant circuit seals.

📋 Procedure

1. Remove refrigerant lines from air conditioner compressor .
2. Remove air conditioner compressor. [Note: When it is removed, the air conditioner compressor contains an indeterminate amount of refrigerant oil. For this reason it is important to observe the notes on renewing the compressor Air conditioner with refrigerant R134a87General information on air conditioner.]
3. Attach refrigerant lines to air conditioner compressor Detaching and attaching refrigerant lines on air conditioner compressor - vehicles with 6-cyl. engine. [Note: Lubricate O-rings lightly with refrigerant oil before fitting Refrigerant circuit seals.]
4. Before securing the air conditioner compressor, check the position of both dowel sleeves (A) in the bracket or the compressor (B). [Note: There are different versions of the dowel sleeves (A) (different length); for correct version refer to Electronic parts catalogue.Make sure that bushes (A) are correctly positioned and contact surfaces are clean. If the bushes are not installed correctly or the contact surfaces (C) at the bracket or air conditioner compressor are dirty or damaged, this could lead to misalignment between the air conditioner compressor and the engine. After a period of operation, misalignment can cause damage to the poly V-belt or the air conditioner compressor.]
5. Before fitting poly V-belt, turn air conditioner compressor 10 times via pulley in direction of rotation (to prevent damage to compressor on initial activation). [Note: Cranking prevents damage to the air conditioner compressor, which could be caused by refrigerant oil in the compression chamber on initial start-up of the engine.After attaching the air conditioner compressor and the refrigerant line, check the routing of the refrigerant lines. They must be inserted in the brackets provided (if fitted, depends on engine).Check that refrigerant lines and corresponding brackets have adequate clearance to other components, ensuring sufficient distance between belt, bracket and pulley.]

6. Evacuating and charging refrigerant circuit Air conditioner with refrigerant R134a87Refrigerant circuit.
7. Re-install remaining components (removed earlier).
8. Switch on ignition.
9. Interrogate the event memory of the front air conditioner operating and display unit E87 and erase any faults displayed in "“Guided Fault Finding”" mode.
10. Start up air conditioner after charging refrigerant circuit . [Note: Also observe notes on starting up air conditioner after charging Air conditioner with refrigerant R134a87General notes on air conditioning systems.]

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