Measuring and marking radial run-out on propshaft flange: VW Phaeton

🧭 Before you start

Fits: VW Phaeton (3D)

• Special tools named: dial gauge
• Renewed: bolts for propshaft

Don't miss

• Make a coloured mark at the point of greatest radial run-out along outside of flange (corresponds to greatest distance from axis of rotation).
• If necessary, remove old marking (B) from flange.
• Always renew bolts for propshaft.
• The marks may only be offset a maximum of 30° to one another.
• Brace propshaft with counterhold tool T10172 to prevent it from turning.

🔩 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. Disconnect propshaft from rear final drive and tie up or support.
2. Set up measuring tools.
3. Set dial gauge to zero with 1 mm preload and position on machined surface in flange.
4. Turn both rear wheels in the same direction at the same time so that the propshaft rotates one complete rotation.
5. Make a coloured mark at the point of greatest radial run-out along outside of flange (corresponds to greatest distance from axis of rotation).

6. If necessary, remove old marking (B) from flange.
7. Always renew bolts for propshaft.
8. Fit propshaft with markings (A) and (B) facing one another. [Note: The marks may only be offset a maximum of 30° to one another.]
9. Brace propshaft with counterhold tool T10172 to prevent it from turning.
10. First tighten propshaft to 10 Nm, then to specified torque . — 10 Nm (7.4 lb-ft)

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