Timing belt replacement: VW Polo4 1.9 SDi (ASY)

🧭 Before you start

Fits: platform codes 1.9, SDI

• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: locking tool

🔧 Engine codes this applies to

📐 37 workshop diagrams for ASY

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

📋 Procedure

Preparation and removal

1. Counterhold tool:
2. Before disconnecting the battery cable, check the audio system security code
3. Tensioner turning tool:
4. Coolant pump renewal is recommended after timing belt removal
5. Gearwheel locking tool:

6. Engine support tool:
7. Remove the engine support bracket
8. Use the special tool
9. Remove the timing belt lower covers
10. Remove the crankshaft pulley
11. Crankshaft pulley
12. Coolant pump
13. Check the timing marks
14. Check that the special tools fit

Installation and checks

15. Use new bolts
16. Fit the timing belt in the sequence shown
17. Fit the timing belt and camshaft gearwheel together
18. Stage 1:
19. Tighten the large bolt on the tensioner to a torque of:
20. Check for correct fitting
21. Check the timing marks again
22. Tighten the camshaft gearwheel bolts
23. Check the marks on the tensioner
24. Repeat the procedure if required
25. Refit the engine mount
26. Fit the vacuum pump
27. Fit all the timing belt covers
28. Fit the crankshaft pulley
29. Fit the ancillary drive belt
30. Refit the noise insulation cover
31. Check the injection timing

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• Removing and installing coolant pump · 53 torque figures