Genuine Audi 100 Wheel Bearing

Audi 100 Wheel Bearing Parts and Q&A

• Inner Wheel Bearing
  311-405-625-N
  Q: Is the wheel bearing designed to last the entire service life without maintenance on Audi 100?

  A:

  The wheel bearing is a sealed, pre-adjusted and lubricated double-row roller type bearing that is said to last through the entire service life of the car. The hub bolt should not be too tightened when aligning the wheel bearing. It will require a press to dismantle and reassemble the assembly, although in place of it, a big bench vice and spacers such as large sockets can be used. The inside races of the wheel bearing fit snugly upon the hub and in the case where the inner race is not removed off the hub, a knife-edged bearing puller will be required. The first step involves the removal of the suspension strut assembly and a reasonably sure support of the strut base. Press the hub flange out of the wheel bearing using a tubular spacer which only touches the inner end of the hub flange. In case the outboard inner race is attached to the hub, remove with a bearing puller. Then place the outer face of the strut base in place and push the entire wheel bearing assembly off the strut with a tubular spacer that just gets in contact to the inner race. Clean the hub and the strut and get any dirt and grease off and finish off any burrs or raised edges that may cause difficulty in reassembling. Check the parts of the components, either crack or not, replace them as needed. Lean the inner face of the strut base and fit the wheel bearing in the strut bore, with the inner race of the larger diameter being directed outwards. Press the wheel bearing into place with a tubular spacer which should just touch the outer race but not the inner race, so that the wheel bearing is pressed into place and fully seated. Lastly, install the outer face support of the hub flange and set the wheel bearing inner race over the end of the hub flange pushing it on the hub until it snaps into place. Before replacing the suspension strut assembly, ensure that the hub flange is turning freely.
• Bearing Assembly
  4A0-598-625-A
  Q: How to replace the wheel bearing and oil seal on Audi 100?

  A:

  For models with rear drum brakes, begin by removing the brake drum, while for those with rear disc brakes, remove the rear hub. Using a flat-bladed screwdriver, lever the oil seal out of the rear of the hub or drum, taking note of its orientation. Next, remove the inner wheel bearing from the hub or drum, then support the hub and tap the outer wheel bearing outer race out of position with a hammer and punch. After turning the hub or drum over, tap the inner wheel bearing outer race out as well. Thoroughly clean the hub or drum bore, eliminating all dirt and grease, and polish away any burrs or raised edges that could impede reassembly. Inspect the surface for cracks or signs of wear, renewing it if necessary, as the wheel bearings and oil seal must be replaced whenever disturbed due to potential damage to the outer races. Acquire new wheel bearings, an oil seal, and a multi-purpose grease suitable for wheel bearings. During reassembly, apply a light film of clean engine oil to each wheel bearing outer race to facilitate installation. Securely support the hub or drum and position the outer wheel bearing outer race, tapping it fully into place with a suitable tubular spacer that only contacts the race's outer edge. After turning the hub or drum over, install the inner wheel bearing outer race in the same manner, ensuring both outer races are correctly seated and wiping them clean. Work grease thoroughly into both taper roller wheel bearings and apply a smear of grease to the outer races before fitting the taper roller wheel bearing to the inner wheel bearing outer race.