Auxiliary belt replacement: Audi Rotating crankshaft to TDC 2.0 TDI (BLB, BNA, BRD, BRE, …)

🧭 Before you start

Fits: Audi A4 Cabriolet B6/B7 (8H), Audi A4 B6/B7 (8E)

• Timing position: the crankshaft or camshaft is set and locked during this job

Don't miss

• Unbolt vibration damper; counterhold on centre bolt with ring spanner.
• The engine must only be turned at the crankshaft, in the direction of normal engine rotation (clockwise). — Turn the crankshaft to TDC.
• The crankshaft stop can only be pushed onto the sprocket from the front face of the teeth.

🔧 Engine codes this applies to

📐 24 workshop diagrams for BLB

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

📋 Procedure

1. Move lock carrier to service position .
2. Remove poly V-belt .
3. Release tensioner for poly V-belt.
4. Remove top toothed belt cover by releasing retaining clips (arrows).
5. Lever off cover cap from vibration damper.

6. Unbolt vibration damper; counterhold on centre bolt with ring spanner.
7. Unscrew bolts (arrows) for toothed belt cover (centre and bottom) and detach both parts.
8. ⚠ The engine must only be turned at the crankshaft, in the direction of normal engine rotation (clockwise). — Turn the crankshaft to TDC.
9. Lock crankshaft sprocket using crankshaft stop T10050 for engines with circular crankshaft sprocket, or crankshaft stop T10100 for engines with oval crankshaft sprocket. [Note: The crankshaft stop can only be pushed onto the sprocket from the front face of the teeth.]
10. Install vibration damper .
11. Install poly V-belt .
12. Install lock carrier with attachments 50.
13. Allow stop for torque reaction support to rest on rubber buffer for torque reaction support under its own weight and tighten nuts (arrows).
14. Install bumper cover (front) 63.

Other AUDI procedures

• Removing and installing front exhaust pipe - vehicles with multitronic gearbox
• Removing and installing engine speed sender G28
• Removing and installing Lambda probe G39 with Lambda probe heater Z19
• Removing and installing charge air cooler (left-side) – Audi
• Checking tandem pump - vehicles with 1.9 ltr. and 2.0 ltr. 2V engine
• 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