Adjusting input shaft - gearboxes to approx. 04.2003: Audi TT Mk1

🧭 Before you start

Fits: Audi TT Mk1 (8N)

• Special tools named: dial gauge

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• This procedure must be repeated for each subsequent measurement, as otherwise the dial gauge will not return to its original setting.
• If the bearing clearance cannot be measured, but input shaft play is perceptible and the input shaft turns freely, the adjustment is acceptable.

🔩 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. Press tapered roller bearing outer race (without shim) into gearbox housing onto stop.
2. Install both output shafts and input shaft in clutch housing and fit gearbox housing. Tighten hexagon bolts to 25 Nm + tighten 45° (1/8 turn) further — 25 Nm (18 lb-ft)
3. Fit measuring appliance and dial gauge in clutch housing.
4. Before measurement, rotate input shaft to allow tapered roller bearings to settle.
5. Set dial gauge to "“0”" with a preload of 1 mm. [Note: This procedure must be repeated for each subsequent measurement, as otherwise the dial gauge will not return to its original setting.]

6. Move input shaft towards dial gauge.
7. Read off and note play indicated on dial gauge (in this example: 1.63 mm).
8. Determine thickness of shim according to following table (in this example: 1.60).
9. Remove gearbox housing and pull tapered roller bearing outer race out of gearbox housing.
10. Press tapered roller bearing outer race (with shim) into gearbox housing (shim in this example: 1.60 mm).
11. Fit gearbox housing and tighten hexagon bolts to 25 Nm + tighten 45° (1/8 turn) further. — 25 Nm (18 lb-ft)
12. Fit measuring appliance and dial gauge.
13. Rotate input shaft to allow tapered roller bearings to settle.
14. Move input shaft towards dial gauge. [Note: If the bearing clearance cannot be measured, but input shaft play is perceptible and the input shaft turns freely, the adjustment is acceptable.]

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