Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1998A8 SEDAN (4D2) V8-3.7L (AEW)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACSERVICE AND REPAIRA/C COMPRESSOR, REMOVING AND INSTALLING
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)
A/C Compressor, Removing and Installing
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)SECTION A/C Compressor, Removing and Installing
A/C compressor, removing and installing
- Discharge A/C refrigerant system.
- Remove compressor from mounting bracket.
- Disconnect refrigerant lines from the compressor (tightening torques and O-rings).
CAUTION!
- Mark travel direction of ribbed belt before removing. Reversing direction could cause belt to fail.
- If a new compressor is installed, or if system has lust been recharged, manually turn the A/C compressor 10 rotations before operating the system to prevent compressor damage.
NOTE:
- If a compressor is to be shipped for quality monitoring, connections should be sealed with caps.
- Replace compressor.
- When first operating compressor start engine with compressor switched off ("OFF" mode). Wait until the idle speed has stabilized before switching the compressor on and then run at idle for at least 10 minutes.
- Removing and installing ribbed V-belt
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.