Removing and installing air conditioner compressor drive shaft — AUDI

🧭 Before you start

Fits: Audi R8 (4S, 2015–)

• Opens: refrigerant (A/C)
• Renewed: complete unit

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• The boot (A) is secured in position at the flange of the drive gear (C) with a clamp to stop it slipping.Renew boot (A) if damaged.To secure clamp, use locking pliers for Phaeton steering rackVAS 6199 or similar.
• Check drive shaft (B); splines must not show signs of wear and must engage snugly in splines of drive gear (C).
• Before installing air conditioner compressor, insert drive shaft (B) and slide it into drive gear (C) as far as stop.
• The clamp is available together with the boot (A) as replacement part Electronic parts catalogue.

📋 Procedure

1. ⚠ Danger from escaping pressurised refrigerant.Frostbite on skin and other parts of the body.Extract the refrigerant and then immediately open up the refrigerant circuit.Extract the refrigerant again if more than 10 minutes have passed since the initial extraction and the refrigerant circuit has not been opened up. Renewed evaporation leads to the build-up of pressure in the refrigerant circuit. — Switch off ignition.
2. Discharge refrigerant circuit Air conditioner with refrigerant R134a87Refrigerant circuit (Air conditioner with refrigerant R134a; Refrigerant circuit; Working with the air conditioner service station). [Note: The installation position of the air conditioner compressor means that the drive unit can only be checked after removing the sound insulation General body repairs, exterior66Sound insulation; Removing and installing sound insulation.If the overload protection of the drive plate has been triggered, check that the air conditioner compressor can rotate freely before renewing the drive unit. If the air conditioner compressor does not rotate freely, renew the complete unit.]
3. Remove air conditioner compressor Removing and installing air conditioner compressor.
4. Detach grommet (A).
5. Pull drive shaft (B) out of splines of drive gear (C). [Note: The boot (A) is secured in position at the flange of the drive gear (C) with a clamp to stop it slipping.Renew boot (A) if damaged.To secure clamp, use locking pliers for Phaeton steering rackVAS 6199 or similar.]

6. Check drive shaft (B); splines must not show signs of wear and must engage snugly in splines of drive gear (C).
7. Prior to insertion, coat the splines of the drive shaft (B) e.g. with greaseG 000 100Electronic parts catalogue.
8. Before installing air conditioner compressor, insert drive shaft (B) and slide it into drive gear (C) as far as stop.
9. The boot (A) is secured in position with a clamp on the auxiliary drive flange (for the air conditioner compressor and power steering pump) to prevent it from slipping.
10. After fitting air conditioner compressor, check installation position of boot (A). [Note: The clamp is available together with the boot (A) as replacement part Electronic parts catalogue.]
11. Install air conditioner compressor Removing and installing air conditioner compressor.

🎬 Related video tutorial

Independent AUTODOC tutorial for the same job, filmed on a different model (A4 B5 Saloon) — the technique carries over, the fasteners and figures on this page are the ones for your car.

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