Removing toothed belt from camshafts, vehicles without adjustable exhaust camshaft — VW

🧭 Before you start

Fits: VW Jetta VI (16, 2010–2018); platform codes AV3, AY3

• Opens: coolant
• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: T10527/1, T10494, T10172/1, T10172/2, torque wrench
• Renewed: o-ring of plug

Don't miss

• Turn the crankshaft in the normal direction of rotation until the piston in cylinder 1 shows "“BDC”".
• Locking pin T10340 locks crankshaft in direction of engine rotation only.
• It should be possible to insert the camshaft clamp T10494 easily.Do not knock camshaft clamp into place with any kind of tool.
• Renew bolts that are tightened with specified tightening angle.Renew O-ring of plug if damaged.
• Fit new bolts (1, 2) for camshaft sprockets, but do not tighten.

🔧 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. Loosen hose clips (1, 2) and remove air pipe.
2. Move air hoses clear at air pipe.
3. Open hose clips (arrows) and detach air duct (1).
4. Detach connector from charge pressure senderGX26.
5. Release fasteners (arrows) using release tools T10527 and T10527/1.

6. Remove air pipe (1).
7. Press release buttons and pull off hose (1).
8. Remove bolts (arrows) and detach crankcase breather hose.
9. Remove noise insulation General body repairs, exterior66Noise insulation; Assembly overview - noise insulation.
10. Drain coolant .
11. Unscrew bolts (A ... D), and push cover (1) for thermostat to one side.
12. Lay wiring harness to one side (arrows).
13. Unscrew bolts (1, 3) and remove cover (2) for toothed belt for coolant pump.
14. Unscrew bolts (arrows) and detach sealing cap (1).
15. Separate plug-in connectors from fuel hose and from hose to activated charcoal filter 20plug-in connectors; Separating plug-in connectors.
16. Release hoses from retainer (3) and lay them to one side.
17. Remove bolt (2).
18. Release clips (arrows) and detach upper toothed belt guard (1).
19. Remove ignition coil 1 with output stage N70 and cylinder 1 spark plug .
20. Insert a screwdriver with a shaft length of at least 250 mm into spark plug hole so that it contact piston crown.
21. Turn the crankshaft in the normal direction of rotation until the piston in cylinder 1 shows "“BDC”".
22. Turn the crankshaft further, until the screwdriver has moved (30 mm) in the (direction of the arrows)
23. Unscrew plug for "“TDC”" hole in cylinder block.
24. Screw locking pin T10340 as far as stop into cylinder block, and tighten it to 30 Nm. — 30 Nm (22 lb-ft)
25. Rotate crankshaft in normal direction of rotation as far as stop. [Note: Locking pin T10340 locks crankshaft in direction of engine rotation only.] [Note: The camshafts have two pairs of grooves: one positioned symmetrically and one positioned asymmetrically. In "“TDC”" position, the asymmetrically positioned pair of grooves must be above the imaginary horizontal centre line.]
26. If camshafts are not positioned as described, unscrew locking pin T10340, turn crankshaft one rotation further and return to "“TDC”" position. [Note: It should be possible to insert the camshaft clamp T10494 easily.Do not knock camshaft clamp into place with any kind of tool.]
27. Use assembly tool T10487 to push against toothed belt in (direction of arrow).
28. While doing this, insert camshaft clamp T10494 into camshafts as far as stop and hand-tighten with bolt (arrow).
29. Unscrew plug (1) for camshaft pulley on inlet camshaft.
30. Use counterhold T10172 with adapter T10172/1 to do this.
31. Unscrew bolts (1 and 2) by approx. 1 turn.
32. Use counterhold T10172 with adapter T10172/1 and T10172/2 to do this.
33. Loosen bolt (1) and release tensioning roller on eccentric adjuster (2) using special wrench, 30 mm T10499.
34. Release tensioning roller on eccentric adjuster (2) using special wrench, 30 mm T10499.
35. Remove toothed belt from camshaft pulleys.
36. Remove toothed belt from camshaft pulleys. [Note: Renew bolts that are tightened with specified tightening angle.Renew O-ring of plug if damaged.]
37. Check "“TDC”" position of camshaft and crankshaft:
38. Fit new bolts (1, 2) for camshaft sprockets, but do not tighten.
39. Pull toothed belt upwards, and fit it on idler pulley (1), tensioning roller (2) and camshaft pulleys (3) and (4).
40. Using special wrench, 30 mm T10499, turn eccentric adjuster (2) of tensioning roller in direction of (arrow) until adjustment indicator (3) is positioned approx. 10 mm to the right of adjustment window.
41. Turn eccentric adjuster back until adjustment indicator is positioned exactly in adjustment window. [Note: Torque wrenchVAS 6583 must be used for tightening.When setting the specified torque on the torque wrenchVAS 6583, the length indicated on the insert tool, 13 mm T10500 must be entered in the torque wrench.]
42. Hold eccentric in that position and tighten bolt (1) to 25 Nm. — 25 Nm (18 lb-ft)
43. To do this, use insert tool T10500 with torque wrenchVAS 6583. [Note: Turning the engine further or running the engine may lead to slight differences in the position of the adjustment indicator (3) in relation to the adjustment window. This does not affect the toothed belt tension or the timing.]
44. Tighten bolts (1, 2) initially to 50 Nm using counterhold T10172 with adapter T10172/1 and T10172/2. — 50 Nm (37 lb-ft)
45. Unscrew locking pin T10340.
46. Remove bolt (arrow) and detach camshaft clamp T10494.
47. Turn crankshaft 2 turns in direction of engine rotation.
48. Screw locking pin T10340 into cylinder block as far as stop and tighten to 30 Nm. — 30 Nm (22 lb-ft)
49. Rotate crankshaft further in direction of engine rotation as far as stop. [Note: Locking pin T10340 locks crankshaft in direction of engine rotation only.] [Note: It should be possible to insert the camshaft clamp T10494 easily.Do not knock camshaft clamp into place with any kind of tool.]
50. Use assembly tool T10487 to push against toothed belt in (direction of arrow).
51. While doing this, insert camshaft clamp T10494 into camshafts as far as stop and hand-tighten with bolt (arrow).
52. Repeat adjustment of valve timing.
53. Unscrew locking pin T10340.
54. Remove bolt (arrow) and detach camshaft clamp T10494.
55. Tighten bolts (1, 2) to final specified torque using counterhold T10172 with adapter T10172/1 and T10172/2.
56. Tighten plug (1) using counterhold T10172 with adapter T10172/1.

Other VW procedures

• Emptying fuel tank with fuel tank less than 3/4 full, vehicles with front-wheel drive
• Removing and installing engine control unit J623 (with metal locking plate)
• Removing and installing toothed belt pulley for coolant pump
• Removing and installing thermostat for large cooling circuit
• Removing and installing engine control unit J623, Sharan and Tiguan
• Removing engine · 41 torque figures
• Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
• Adjusting valve timing – VW Passat B5 · 83 torque figures
• Removing and installing camshafts – VW Passat B6 · 39 torque figures
• Removing and installing coolant pump · 53 torque figures