audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Example: > < Adjusting bevel gear
Adjusting preload of tapered roller bearings for bevel gear (friction torque)
Adjusting preload of tapered roller bearings for bevel gear (friction torque)
Shaft bevel gear is removed.
   
–  Insert bevel gear with input shaft -5- into final drive housing.
–  Fit tapered roller bearing inner race -3- onto bevel gear with input shaft as far as stop.
–  Fit 1.75 mm shim in seat of small tapered roller bearing outer race (S2 side) in small cover -2-.
For measurement purposes a shim S2 with a thickness of 1.75 mm is fitted provisionally. This is referred to in the following as S2*. S2* is replaced with the final shim S2 after determining backlash.
–  Insert small cover and tighten bolts to torque → Item.
  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, ETKA.
–  Install large cover with large tapered roller bearing outer race but without O-ring, flange shaft oil seal and without shim S1.
–  Press bevel gear with input shaft towards large cover and turn eight times.
–  Press bevel gear with input shaft towards outer race for small tapered roller bearing and turn eight times.
  N39-1081
–  Attach dial gauge and set to “0” with a preload of 2 mm.
–  Move bevel gear with input shaft up and down (direction of -arrow-)
–  Read off play from dial gauge and determine Stotal.
  N39-0813

Example: > < Adjusting bevel gear