1. If any of the checks described in Section 1, wear of any of the drive shaft joints is found, first check the tightness of the shaft nut. To do this, remove the wheel center cap. If the blocking rim is not damaged, the drive shaft nut must be tightened correctly; if there is any doubt about this, check the torque of the nut with a torque wrench. Re-lock the nut (see chapter 2), then install the center cap. Repeat this check on the other drive shaft nut.
2. Take the car for a test drive. Slowly drive the car in a circle, turning the steering wheel to the maximum angle of rotation, and listen for a metallic click. The presence of a clicking sound indicates the wear of the outer CV joint, which in this case must be replaced: its repair is not possible.
3. If the outer CV joint is worn, this can be replaced separately (see note given in Chapter 1); procedure is the same as described above, paragraphs 1-12 of Chapter 3.
4. If a vibration is felt that increases with speed, the internal CV joints of the drive shafts may be worn out.
5. Remove the drive shaft (see chapter 2), then parse it (Chapter 3) and inspect the CV joint. If any signs of wear or play are found, the worn components must be replaced. Carefully inspect also the grooves of the shaft.