Adjusting preload of tapered roller bearings for bevel gear (friction torque) — AUDI

🧭 Before you start

Fits: Audi A3 (8L, 1996–2003)

• Special tools named: dial gauge

📋 Procedure

1. Insert bevel gear with input shaft (5) into final drive housing.
2. Fit tapered roller bearing inner race (3) onto bevel gear with input shaft as far as stop.
3. Fit 1.75 mm shim in seat of small tapered roller bearing outer race (S2 side) in small cover (2).
4. Insert small cover and tighten bolts to torque . [Note: On some gearboxes shim S1 is fitted between oil deflector plate and large cover. On these gearboxes the oil deflector plate must be removed and a provisional shim S1 fitted, which corresponds to the thickness of the oil deflector plate (e.g. 0.75 mm); Part No. Electronic parts catalogue, the parts catalogue.]
5. Install large cover with large tapered roller bearing outer race but without O-ring, flange shaft oil seal and without shim S1.

6. Press bevel gear with input shaft towards large cover and turn eight times.
7. Press bevel gear with input shaft towards outer race for small tapered roller bearing and turn eight times.
8. Attach dial gauge and set to "“0”" with a preload of 2 mm.
9. Move bevel gear with input shaft up and down (direction of (arrow))
10. Read off play from dial gauge and determine Stotal.

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