TorqFix

Timing belt replacement: Seat Toledo91, Ibiza93, Cordoba93 1.9 TDI (1Y, 1Z, AAZ, AFN, …)

Step-by-step timing belt replacement for the Seat Toledo91, Ibiza93, Cordoba93 1.9 TDI: 61 steps. What to remove, in what order, and what to check after.

Timing belt replacement on the first-generation SEAT Toledo, Ibiza and Córdoba with the 1.9 diesel family – the 1Y and AAZ indirect-injection engines and the 1Z, AHU and AFN TDI units. The engine upper cover, valve cover, timing belt upper cover and ancillary belt tensioner come off first so the camshaft can be locked with the setting bar across the back of the camshaft. The bar is centred with feeler gauges, half the measured clearance on each side. The injection pump gearwheel is pinned and its outer bolts loosened, the camshaft gearwheel bolt slackened half a turn, and the crankshaft and coolant pump pulleys removed with the lower cover. Then the tensioner is released and the belt removed. Pump timing on these engines lives or dies on that locking setup and a cold engine for tensioning.

61 steps 5 engine codes

🧭 Before you start

Remove engine and valve covers, upper belt cover and ancillary belt tensioner, lock the camshaft with the bar centred by feeler gauges, and pin the injection pump gearwheel. Loosen the pump gearwheel outer bolts and the camshaft gearwheel bolt, remove pulleys and lower cover, release the tensioner and remove the belt. Fit the new belt, align the tensioner marks and confirm the special tools still fit.

Fits: platform codes 1.9, D, |, TD, TDI

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

Don't miss

  • Centre the camshaft bar using feeler gauges at half the clearance each side.
  • Lock the injection pump gearwheel before loosening its outer bolts.
  • Tension the belt only when the engine is cold.
  • Avoid bending, twisting or pulling the belt.
  • Check that the special tools fit after setting the tensioner marks.

Written for this job from the workshop steps below · TorqFix editorial.

🔧 Engine codes this applies to

1Y1ZAAZAFNAHU

📋 Procedure

Preparation and removal

  1. Note: The engine must be cold before timing belt adjustment
  2. Note: Avoid bending, torsion or traction
  3. Remove the ancillary drive belt tensioner
  4. Remove the engine upper cover
  5. Remove the timing belt upper cover
1Y? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Remove the valve cover
  2. Check that the special tools fit
  3. Camshaft locking tool:
  4. Lock the camshaft
  5. Vehicles with automatic transmission
  6. Lock the injection pump gearwheel
  7. Use a special tool:
  8. Loosen the injection pump gearwheel outer bolts
  9. Camshaft gearwheel:
  10. Loosen the bolt
  11. 1/2 a turn
  12. Remove the crankshaft pulley
  13. Remove the coolant pump pulley
  14. Remove the timing belt lower cover
  15. Loosen the tensioner
  16. Remove the timing belt

Installation and checks

  1. Fit the timing belt onto the gearwheels
  2. Align the marks on the tensioner
  3. Check the tensioner
  4. Measure the clearance on the other side
  5. Fit a feeler gauge at both sides, half the thickness of the clearance

Other SEAT procedures

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.