Removing timing chains from camshafts - vehicles from 03.2007 onwards — AUDI

🧭 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
• Special tools named: T40058, locking pin

Don't miss

• Using adapter T40058 turn the crankshaft in the normal direction of rotation (arrow) to "“TDC”".
• The chain tensioner is oil-damped and can therefore only be compressed slowly by applying constant pressure.
• Mark positions of camshaft adjusters with paint for re-installation.
• Renew the bolts tightened with specified tightening angle.
• If you turned the crankshaft beyond "“TDC”", turn it back approx. 30° and set to "“TDC”" again.

🔧 Engine codes this applies to

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Remove cylinder head covers: left-side , right-side .
2. Remove timing chain covers (left and right) .
3. Insert guide pin of adapter T40058 as follows:
4. Using adapter T40058 turn the crankshaft in the normal direction of rotation (arrow) to "“TDC”".
5. Fit camshaft clamps T40070 to both cylinder heads and tighten bolts (arrows) to 25 Nm. — 25 Nm (18 lb-ft)

6. Unscrew plug from sump (top section).
7. Screw locking pin3242 into bore (tightening torque: 20 Nm); if necessary, turn crankshaft backwards and forwards slightly to fully centralise locking pin. — 20 Nm (15 lb-ft)
8. Press guide rail of chain tensioner for camshaft timing chain (left-side) inwards as far as the stop using a screwdriver (1). Then lock chain tensioner by inserting locking pin T40071. [Note: The chain tensioner is oil-damped and can therefore only be compressed slowly by applying constant pressure.]
9. Press guide rail of chain tensioner for camshaft timing chain (right-side) inwards as far as the stop using a screwdriver (1). Then lock chain tensioner by inserting locking pin T40071. [Note: The chain tensioner is oil-damped and can therefore only be compressed slowly by applying constant pressure.]
10. ⚠ Risk of damage to engine.Block off the opening in the valve timing housing with a clean cloth to prevent small items from dropping into the engine. — Unscrew bolts (1) and (2) at cylinder head (left-side) and remove both camshaft adjusters.
11. Mark positions of camshaft adjusters with paint for re-installation.
12. Unscrew bolts (1) and (2) at cylinder head (right-side) and remove both camshaft adjusters. [Note: Renew the bolts tightened with specified tightening angle.]
13. ⚠ Avoid damage to valves and piston crowns.The crankshaft must not be at "“TDC”" at any cylinder when the camshafts are turned. — Re-install camshaft adjusters on cylinder head (left-side) in the same position as before (pay attention to marks applied when removing).
14. Position camshaft timing chain on drive chain sprocket and camshaft adjusters and loosely screw in bolts (1 and 2).
15. Remove locking pin T40071.
16. Re-install camshaft adjusters on cylinder head (right-side) in the same position as before (pay attention to marks applied when removing).
17. Position camshaft timing chain on drive chain sprocket and camshaft adjusters and loosely screw in bolts (1 and 2).
18. Remove locking pin T40071.
19. Fit key T40079 onto camshaft adjuster of inlet camshaft on cylinder head (left-side).
20. Apply torque wrenchV.A.G 1332 with socketV.A.G 1332/9 to key T40079.
21. Have a 2nd mechanic apply a torque of 40 Nm to camshaft adjuster in direction of (arrow). — 40 Nm (30 lb-ft)
22. Tighten bolts as follows while keeping camshaft adjuster under tension:
23. Pre-tighten bolt (1) on inlet camshaft to 60 Nm. — 60 Nm (44 lb-ft)
24. Pre-tighten bolt (2) on exhaust camshaft to 60 Nm. — 60 Nm (44 lb-ft)
25. Fit key T40079 onto camshaft adjuster of exhaust camshaft on cylinder head (right-side).
26. Apply torque wrenchV.A.G 1332 with socketV.A.G 1332/9 to key T40079.
27. Have a 2nd mechanic apply a torque of 40 Nm to camshaft adjuster in direction of (arrow). — 40 Nm (30 lb-ft)
28. Tighten bolts as follows while keeping camshaft adjuster under tension:
29. Pre-tighten bolt (1) on inlet camshaft to 60 Nm. — 60 Nm (44 lb-ft)
30. Pre-tighten bolt (2) on exhaust camshaft to 60 Nm. — 60 Nm (44 lb-ft)
31. Detach key T40079.
32. Remove camshaft clamp T40070 from both cylinder heads (arrows).
33. Tighten camshaft adjuster bolts on cylinder head (left-side) as follows:
34. Tighten bolt (1) on inlet camshaft to final tightening torque.
35. Tighten bolt (2) on exhaust camshaft to final tightening torque.
36. Tighten camshaft adjuster bolts on cylinder head (right-side) as follows:
37. Tighten bolt (1) on inlet camshaft to final tightening torque.
38. Tighten bolt (2) on exhaust camshaft to final tightening torque.
39. Remove locking pin3242.
40. Using adapter T40058, turn crankshaft two rotations in normal direction of rotation (arrow) until crankshaft is at "“TDC”" again. [Note: If you turned the crankshaft beyond "“TDC”", turn it back approx. 30° and set to "“TDC”" again.]
41. Fit camshaft clamps T40070 to both cylinder heads and tighten bolts (arrows) to 25 Nm. — 25 Nm (18 lb-ft)
42. Screw the locking pin3242 into the hole (20 Nm). — 20 Nm (15 lb-ft)
43. Remove camshaft clamps from both cylinder heads.
44. Remove locking pin3242.
45. Secure screw plug for "“TDC”" mark into sump (top section) with a new seal .
46. Install timing chain covers (left and right) .
47. Install cylinder head covers: left-side , right-side .

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