Genuine Audi 4000 Wheel Hub

Audi 4000 Wheel Hub Parts and Q&A

• Hub
  823-407-615-A
  Q: How should you dismantle the Coil Springs, Shock Absorber, Strut Bearing and Wheel Hub safely and effectively on Audi 4000?

  A:

  Do not seek to dismantle the suspension strut unless a spring compressor has been installed, when a special compressor is not available have the strut dismantled in a garage. Install the spring compressor, and clamp the Wheel Bearing housing in a vice and compress the spring until the upper spring retainer is unclamped, then easy out the slotted nut at the top of the piston rod with a special tool or in a peg spanner by holding the piston rod in place with an Allen key. Take off the strut bearer and the spring retainer and push out the coil spring of the strut leaving the compressor in place, so that the top of the spring is kept in mind. Installation Removing the components of the bump stops on the piston rod, keeping track of the sequence. Pull up and down the shock absorber piston rod in the full stroke to verify that the resistance is even and smooth; and in case of any evidence of seizing, no resistance, or over-fluid leakage, it will be necessary to renew the shock absorber by screwing out the screw cap using the hexagon box spanner or Audi tool No 40-201 A, but the tool must fit correctly as the screw cap is tight. Remove the shock absorber in the strut, and where replacement of the strut wheel bearing housing is to be done - remove the wheel bearing and replace the bearing and hub in new housing. Clean all the parts, particularly the shock absorber recess in the wheel bearing housing and make sure that new coil springs are of the same color code as the removed ones. Examine the bearing of the strut and replace in case it is worn, bearing in mind that the new type may need to be a modified one when the old is already in place. The procedure of reassembly is the opposite of the removal process, making sure that the screw cap and slotted nut are firmly tightened in accordance with the required torques.
• Front Hub
  443-407-615-A
  Q: How to replace the front wheel bearing and wheel hub assembly on Audi 4000?

  A:

  Remove the front suspension strut, then take out the cross-headed screw and tap the brake disc from the hub. Next, remove the screws and withdraw the splash guard. Support the wheel bearing housing with the hub facing downward, and press or drive out the hub using a suitable mandrel; the bearing inner race will remain on the hub, making it impossible to re-use the bearing. Use a puller to extract the inner race from the hub. After that, extract the circlips, and while supporting the wheel bearing housing, press or drive out the bearing using a mandrel on the outer race. Clean the recess in the housing and apply a little general-purpose grease. Fit the outer circlip, then support the wheel bearing housing and press or drive in the new bearing using a metal tube on the outer race only. Fit the inner circlip, ensuring it is correctly seated. Position the hub with its bearing shoulder facing upward, then press or drive on the bearing and housing using a metal tube on the inner race only. Finally, reassemble the splash guard and brake disc, followed by refitting the front suspension strut.