| Checking | ||
Danger! | Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. | |
Danger! | Risk of injury caused by moving parts that can pinch, crush or, in extreme cases, even sever extremities | No parts of the body or limbs should be within the operating range of the mechanism when moving components. | |
| Notes on tire flat spots | ||
| The tire balance becomes poor with increasing tire wear. This means that the tire does not wear completely symmetrically through its rotation pattern. The level of wear differs in different areas (on front axle outside shoulder or center tread wear on rear axle) | ||
| It is essential to pay the utmost attention to cleanliness. | ||
1 | Hoist vehicle with lifting platform until wheels are free | ||
2 | Check play of front axle ball joints | If necessary replace the respective part. | |
3 | Check tires and rims for wear, damage and flat spots | If a rim is damaged, it must be replaced. | |
4 | Check tire inflation pressure of all wheels and correct if necessary | See tire inflation pressure table in the fuel filler flap. | |
5 | Conduct a road test | Drive vehicle for at least 20 km at a speed of >100 km/h to ensure that the flat spots are driven out of the tires. | |
6 | Hoist vehicle with lifting platform until wheels are free | After the test drive, it is necessary to immediately take the load off the wheels to avoid formation of flat spots. | |
7 | Mark position of wheels | Mark position of wheel relative to wheel hub. | |
8 | Remove all wheels | ||
9 | Clean all wheels | ||
10 | Check wheel balancing machine | Ensure that the wheel balancing machine meets the quality, display accuracy and turnover test requirements. | |
11 | Check lateral and radial runout at all wheels | ||
Radial runout | |||
Lateral runout | |||
12 | Balance wheels on wheel balancer and perform smooth running optimization | Only perform if impermissible lateral or radial runout was found in operation step 11. | |
The wheels with the best radial/lateral run out values are to be mounted onto the front axle. | |||
13 | Mount all wheels | When mounting the wheels, ensure that they are precisely centered and correspond to the position markings. Start off by turning in the wheel bolts to the mounting face in a cross pattern and then tighten them to the specified torque value. | |
1/10 mm centering difference = 20 g imbalance. | |||
14 | Perform test drive and evaluate vibrations/smooth running of vehicle | Drive the vehicle for at least 20 km at a speed of >100 km/h. |
Wheels, tires
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