Make sure the hub nut is securely tightened before checking the bearing (tightening torque is specified in section "Technical data").
Check the condition of the bearings by lifting each front wheel in turn until it is off the ground (see chapter "Basic rules for work") and rotating it. Replace the bearings if the bearings are noisy or the wheel feels uneven (jamming), or if the wheel moves excessively when rocking it up and down.
The wheel bearing is sealed and has a lifetime supply of grease. When removing the hub from the steering knuckle, the bearing is destroyed.
1. Loosen the hub nut on the end of the drive shaft (the car is on the ground).
2. Loosen the wheel bolts, lift the appropriate side of the vehicle and remove the wheel.
3. Turn out two bolts of fastening of a brake support, remove a support from a rotary fist and suspend it (e.g. suspension spring) with a wire hook. The brake hose does not need to be disconnected from the caliper.
4. Turn out the fastening screw and remove a brake disk.
5. Disconnect the tie rod from the steering knuckle arm using a ball joint remover (see chapter "Steering").
6. Remove clamping bolt (and a nut) fastening the ball joint to the steering knuckle and separate the lower suspension arm from the knuckle (15, fig. M:8).
7. Remove the two bolts securing the steering knuckle to the telescopic strut. The upper bolt is eccentric, used to adjust the camber of the wheel; a puller is required to remove this bolt. Mark the position of the eccentric bolt (rice. M:2), to later install it in the same position. Also note the position of the eccentric washer mounted on the bolt (5, fig. M:8).
8. Remove the hub nut and remove the steering knuckle together with the hub from the drive shaft.
9. Press the hub out of the steering knuckle using a mandrel (Fig. M: 3 shows a special VW tool, but if it is not available, you can clamp the steering knuckle in a vice). The wheel bearing will be destroyed, its inner ring will remain on the hub.
10. Pull the bearing inner race off the hub using a puller (pic. M:4). It may be necessary to sharpen the grips of the puller.
11. Remove the two large retaining rings installed in the steering knuckle hole (one from each end) and press out the outer ring of the bearing - fig. M:5. If a socket wrench is used as a driver, make sure it fits the hole diameter, as even minor damage to the hole walls will unacceptably loosen the bearing fit.
12. Install a new retaining ring from the outer edge of the hole. Make sure it fits completely into the groove.
13. Install the steering knuckle on the stand and, on the reverse side, press the new bearing into it until it stops (pic. M:6). The bearing must enter the hole straight, without distortion. Install the second retaining ring.
14. Press the wheel hub into the steering knuckle as shown in fig. M:7, leaning with a mandrel only on the inner ring of the bearing.
15. Establish a rotary fist in gathering on the car in an order, the return to removal.
16 When installing the eccentric bolt, align it with the mark made before disassembly. Don't forget to install the eccentric washer.
17. Tighten all mounting bolts and nuts to the torque specified in section "Technical data".
18. Install the wheel and lower the vehicle to the ground. Install a NEW hub nut and torque to 24.0 kNm.
19. Check the toe and camber, adjust if necessary.
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