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Exhaust camshaft seal (gearbox side) - replace — VW

Exhaust camshaft seal (gearbox side) - replace on VW: 10 steps, engines CNXA, CWSA. What to remove, in what order, and what to check after.

Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.

10 steps 2 engine codes engine codes merged from 2 documented variants

🧭 Before you start

Fits: platform codes 5U3, 5UC, 5UB

Don't miss

  • The seal lip does not require lubrication.

🔧 Engine codes this applies to

📋 Procedure

  1. Remove the water pump toothed belt
  2. Carefully insert the Puller T20143 between the exhaust camshaft and the seal (1).
  3. Remove the seal.
  4. If necessary, remove burrs on the outer region of exhaust camshaft grooves using a fine sandpaper (grit size 220...1000). [Note: The seal lip does not require lubrication.]
  5. Fit the Assembly sleeve T10479/2 in the Assembly sleeve T10479/3.
CNXA? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Apply the new seal, in the direction of the (arrow), towards the Assembly sleeve T10479/2.
  2. Separate the Assembly sleeve T10479/2 from the Assembly sleeve T10479/3, in the direction of the (arrow).
  3. Install the Assembly sleeve T10479/2 with the seal (2) in the exhaust camshaft.
  4. Compress with the Fitter T10479/1 until the seal is installed, using the fastening bolt (1) until touching it.
  5. Install the exhaust camshaft sprocket .

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.