Removing and installing V-belt: Audi A4 B5 1.8 (AEB, AJL, ANB, APU, …)

🧭 Before you start

Fits: Audi A4 B5 (8D)

Don't miss

• It is not possible to adjust belt tension on coolant pump pulley.

🔧 Engine codes this applies to

📐 46 workshop diagrams for AEB

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Release fasteners (arrows) and remove noise insulation.
2. To slacken poly V-belt turn tensioner in direction of (arrow).
3. Remove poly V-belt from alternator pulley and release tensioner.
4. Use M5x60 mm bolt to lock poly V-belt pulley for viscous fan and unscrew using hexagon key.
5. Remove V-belt pulley for coolant pump; apply drift (arrow) at power steering pump pulley.

6. Detach V-belt.
7. Installation is carried out in the reverse order; note the following:
8. Fit V-belt and secure the two pulley halves loosely to the coolant pump.
9. Tighten the two pulley halves in stages (continue to rotate coolant pump). [Note: It is not possible to adjust belt tension on coolant pump pulley.]
10. Fit poly V-belt, slacken off tensioner.
11. Install viscous fan .
12. Start engine and check that belts run properly.
13. Check tightening torque of coolant pump pulley bolts again.

🎬 Video walkthrough

Independent video tutorial by AUTODOC (YouTube) — a helpful visual companion to the steps above.

How to change serpentine belt on AUDI A4 B5 Saloon

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