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| Before working with a finish balancer, the mechanic needs to have been instructed by the manufacturer of the balancer. |
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| To balance the wheels, set the wheels of the driven axle on the sensor platforms (only the front wheels of a front-wheel drive vehicle, all four wheels of a four-wheel drive vehicle). |
| If you determine a residual imbalance greater than 20 grams when balancing the wheels, you should rotate the mounting position of the wheel on the hub. |
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| Mark the point at which the imbalance is indicated. |
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| Unbolt the wheel and rotate its position on the hub so that the marking points downwards. |
Note | The hub must not rotate during this procedure. |
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| First hand-tighten the lowest wheel bolt to about 30 Nm. |
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| Then tighten the remaining wheel bolts diagonally to about 30 Nm. This process ensures that the wheel is centred properly on the hub. |
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| Check whether the imbalance is less than 20 grams using the finish balancer. |
Note | The imbalance should always be less than 20 grams before you change the balance weight. |
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| If necessary, remove the wheel bolts again. |
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| Rotate the wheel relative to the hub once more, turning it one or two wheel bolt holes further. |
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| Tighten the wheel bolts using the method described above. |
Note | Do not try to reduce the imbalance using balance weights until the imbalance is less than 20 grams. |
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| Balance the wheels until the imbalance is less than 5 grams. |
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| Tighten wheel bolts to specified torque if you have not already done so. |
WARNING | Always tighten wheel bolts to specified torque using a torque wrench! |
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