Poly-V belt (vehicles with air conditioner compressor) - remove and install — VW
Poly-V belt (vehicles with air conditioner compressor) - remove and install on VW: 9 steps, 2 torque figures, engines CNXA, CWSA.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: platform codes 5U3, 5UC, 5UB
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- During the Poly-V belt installation process, ensure the proper seating of the belt on the pulleys and the vibration damper.
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 30.0 Nm (22 lb-ft) | Tighten the fastening bolt (1) |
| 40.0 Nm (30 lb-ft) | Tighten the fastening bolt (1) |
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
- ⚠ Risk of compromising due to the reversed rotation direction, in case of used Poly-V belts.Before removing the Poly-V belt, mark the rotation direction with chalk or marker pen, in order to ensure proper operating position installation. — Mark the Poly-V belt turning direction with a marker.
- Remove the tensioning pulley cover (arrow) using a screwdriver.
- Loosen the fastening screw (1).
- Turn the tensioning pulley with the Cable3320/20, Door alignment tool3320 and TX 55 Torx corrugated bitsVW 002M into position (2) in the direction of the (arrow) beyond the dead centre.
- Remove the Poly-V belt. [Note: During the Poly-V belt installation process, ensure the proper seating of the belt on the pulleys and the vibration damper.]
- Install the Poly-V belt in the vibration damper and pulleys of the Generator (Alternator)C and the air conditioning compressor.
- Install the belt on the tensioning pulley.
- Turn the tensioning pulley with the Cable3320/20, Door alignment tool3320 and TX 55 Torx corrugated bitsVW 002M into position (2) in the direction of the (arrow) beyond the dead centre.
- Tighten the fastening bolt (1) to 40.0 Nm. — 40.0 Nm (30 lb-ft)
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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
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.