Auxiliary belt replacement: Vehicles with 1.8 l turbo engine up to 05.2000 — AUDI

🧭 Before you start

Fits: Audi A6 C5 (4B)

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• Prior to removal, mark direction of poly V-belt with chalk or a felt-tip pen. Running a used poly V-belt in the opposite direction could destroy it.
• The hose connections and hoses for the charge air system must be free of oil and grease before assembly.Secure all hose connections with standard clamps Parts catalogue.
• Make sure poly V-belt is properly positioned and correctly routed.

📋 Procedure

1. With ignition switched off, disconnect earth wire at battery .
2. Unscrew coolant expansion tank (arrows).
3. Disconnect wire to coolant shortage indicator switch F66 at bottom of expansion tank and lay aside coolant expansion tank (2) with coolant hoses (1) and (3) connected.
4. Detach air hose (1) from charge air cooler at throttle valve housing. [Note: Prior to removal, mark direction of poly V-belt with chalk or a felt-tip pen. Running a used poly V-belt in the opposite direction could destroy it.]
5. To slacken off poly V-belt, swivel belt tensioner in (direction of arrow).

6. Detach poly V-belt from alternator pulley.
7. Release tensioner.
8. Unscrew wire (2) for terminal 30/B+ at alternator.
9. Unscrew terminal D+ (Item 1).
10. Disengage wiring harness from cable tie (arrow).
11. Screw out hexagon socket-head bolt (1).
12. Detach hexagon nut (2) from bolt.
13. Swivel alternator slightly to one side, pull out bolt at bottom and detach alternator. [Note: The hose connections and hoses for the charge air system must be free of oil and grease before assembly.Secure all hose connections with standard clamps Parts catalogue.]
14. Make sure poly V-belt is properly positioned and correctly routed.
15. Connect battery. Action to be taken .
16. Start engine and check belt routing.

Other AUDI procedures

• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures
• Adjusting vacuum unit for turbocharger, engines with code letters AXX, BPY, BWA
• Removing and installing thermostat housing and coolant pipe (rear)
• Removing and installing alternator - vehicles with 1.6 ltr. TDI engine
• Removing and installing engine support – Audi 1.6 TDI
• Removing and installing gearbox mounting – Audi TT Mk1 1.2