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 MANUALSAUDI2008A3 BASE, 2.0 E, AUTOMATIC DCTREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSAIR CONDITIONING87 AIR CONDITIONINGSPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS
2008 Audi A3 Base, 2.0 E, Automatic DCT
Fastener Tightening Specifications
2008 Audi A3 Base, 2.0 E, Automatic DCTSECTION Fastener Tightening Specifications
| Component | Fastener Size | Nm |
|---|---|---|
| A/C Compressor | 25 | |
| A/C Compressor Belt Pulley Nut | 25 | |
| Air Distribution Housing Screw | 2.5 | |
| Auxiliary Heater Heating Element | 6 | |
| Condenser to Radiator | 5 | |
| Drive Plate, Denso, Version 11 | 20 | |
| Drive Plate, Denso Version 2 2 | 35 | |
| Drive Plate, Denso Version 3 3 | 30 | |
| Drive Plate to Shaft, Zexel / Valeo 4 | 17 | |
| Drive Plate to Pulley, Zexel / Valeo 5 | 7 | |
| Drive Plate to Shaft, Sanden | 25 | |
| Drive Plate to Pulley (version 1), Sanden 6 | 4.5 | |
| Drive Plate to Pulley (version 2), Sanden 7 | 12 | |
| Dryer Cartridge Sealing Cap, Denso Condenser | 2 | |
| Expansion Valve | 10 | |
| Fluid Reservoir Mounting | 10 | |
| High Pressure Sensor | 8 | |
| Oil Drain Plug, Denso compressor | 30 | |
| Oil Drain Plug, Sanden compressor | 10 | |
| Oil Drain Plug, Zexel compressor | 10 | |
| Oil Drain Plug, Delphi compressor | 15 | |
| Pressure Relief Valve, Delphi Compressor With Sealing Ring | 15 | |
| Pressure Relief Valve, Sanden Compressor | 14.5 | |
| Pressure Relief Valve, Denso Compressor | 10 | |
| Pressure Relief Valve, Zexel / Valeo Compressor | 10 | |
| Refrigerant Lines to Expansion Valve | 10 | |
| Refrigerant Lines to Condenser | 10 | |
| Refrigerant Lines to Compressor | 25 | |
| Refrigerant Line Connecting Point | 10 | |
|
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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.