Removing and installing pulley: Audi A1 (ALZ, CAVG, CAXA, CBZA, …)

🧭 Before you start

Fits: Audi A1 (8X, 2010–2018)

• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: T10170/1, 3415, dial gauge
• Renewed: diamond-coated washers

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• Risk of damage to engine.Locking pin T10340 must be screwed in with crankshaft at "“TDC”" position. — Remove poly V-belt .
• Rotate crankshaft in normal direction of rotation to "“TDC”".
• The locking pin T10340 locks the crankshaft only in the direction of engine rotation.
• Renew the bolts tightened with specified tightening angle.Renew diamond-coated washers.
• Tighten bolt for poly V-belt pulley (counterhold with counterhold tool3415 and pin 3415/1).

🔧 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. ⚠ Risk of damage to engine.Locking pin T10340 must be screwed in with crankshaft at "“TDC”" position. — Remove poly V-belt .
2. Remove engine cover panel .
3. Remove bolts (1 and 3).
4. Release hose clip (2), detach air pipe (top right) and remove air hose.
5. Unplug electrical connector (2).

6. Detach vacuum hoses (1).
7. Unplug electrical connector (4).
8. Remove bolts (1 and 3).
9. Press release tabs and disconnect crankcase breather hoses (arrows).
10. Release hose clip (2) and disconnect hose at activated charcoal filter.
11. Detach hoses.
12. Apply puller T10094 A to ignition coil for cylinder 1, pull out ignition coil and at the same time unplug electrical connector at ignition coil for cylinder 1.
13. Remove spark plug for cylinder 1 with spark plug socket and extension3122 B.
14. Screw adapter for dial gauge T10170 into spark plug hole as far as the stop.
15. Insert dial gaugeVAS 6079 with extension T10170/1 as far as the stop and secure using locking nut (arrow).
16. Rotate crankshaft in normal direction of rotation to "“TDC”".
17. Unscrew plug (arrow) for "“TDC”" hole on cylinder block.
18. Screw locking pin T10340 into cylinder block as far as stop and tighten to 30 Nm. [Note: The locking pin T10340 locks the crankshaft only in the direction of engine rotation.] — 30 Nm (22 lb-ft)
19. Remove front wheel housing liner (right-side) General body repairs, exterior66Wheel housing liners; Removing and installing wheel housing liner (front).
20. ⚠ Risk of damage to engine.To prevent the crankshaft chain sprocket from slipping off the drive lug, do not rotate the crankshaft after the poly V-belt pulley has been detached. — Loosen bolt for poly V-belt pulley using counterhold tool3415 with pin 3415/1.
21. Remove bolt and take off poly V-belt pulley. [Note: Renew the bolts tightened with specified tightening angle.Renew diamond-coated washers.]
22. Fit poly V-belt pulley, lubricate threads of bolt for poly V-belt pulley with oil and screw in by hand until bolt makes contact.
23. ⚠ Risk of damage to engine.Use dial gauge to check "“TDC”" position of crankshaft. Crankshaft must only be brought into contact with locking pin T10340 from "“TDC”" position.Also use counterhold tool3415 and pin 3415/1 to counterhold poly V-belt pulley when tightening bolt. — Turn crankshaft in direction of engine rotation until it makes contact with locking pin T10340.
24. Tighten bolt for poly V-belt pulley (counterhold with counterhold tool3415 and pin 3415/1).
25. Remove locking pin T10340. [Note: Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
26. Install spark plug 819.
27. Tighten plug for "“TDC”" drilling .
28. Install air pipe (top right) .
29. Install air hoses with screw-type clips .
30. Install poly V-belt .

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