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Home >> Audi >> 2014 >> A5 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (6-Speed Manual Transmission 02X, Four-Wheel Drive) >> 39 Final drive - front differential >> Pinion shaft and ring gear, adjusting >> Pinion shaft and ring gear, adjusting

Pinion shaft and ring gear, adjusting

WARNING: This page is about a different car, the 2008 Audi A4, 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Careful adjustment of the ring gear and pinion shaft is essential to ensure that the final drive gives long service and runs silently. For this reason, the pinion shaft and ring gear are matched together during manufacture, and checked to ensure a good mesh pattern and quiet running in both directions of rotation. The position of quietest running is found by moving the pinion shaft in an axial direction and at the same time lifting the ring gear out of the zero-play mesh position by the amount necessary to maintain the backlash within the specified tolerance.
  • The object of the adjustment is to reproduce the setting for quietest possible running, as obtained on the test machine in production.
  • The deviation (tolerance) "r" in relation to the master gauge "Ro" is measured for the final drive sets supplied as replacement parts and marked on the outer circumference of the ring gear. The final drive set (pinion shaft and ring gear) may only be replaced together as a matched pair.
  • Observe the general repair instructions for tapered roller bearings and shims.
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