Notes

Make sure that no parts are damaged by the mounting forks of the measuring jack. Make sure that the vehicle cannot slide off the measuring jack before making the first measurement run.

Further to 4 a: (Fine balancing of the front wheels)

- Position one or both measuring jacks (see mounting points).

- Set the sensitivity controller to position 5.5 for Hofmann, or 5 for Schenck. Make a measurement run.

- Fit balance weights if necessary. Then make a check run. If the result is not acceptable (assuming orderly work), calibrate the finish balancer - adapt the sensitivity controller to the actual conditions.

- If the balancing result is still not completely acceptable (e.g. 5 g) even after calibration, alter the balance weight according to the balance correction table and eliminate the residual imbalance. (Balance correction schematic on the measuring unit in the case of the Schenck RAW 04).

Balance weight

Modification of the balance

in section

weight

1

enlarge at the same position

2

reduce at the same position

3 or 5

place in arrow direction in case

of same size

5 or6

enlarging and place in arrow

direction

7 or 8

reducing and place in arrow

direction

Further to 4 b: (Fine balancing of the rear wheels)

- Position measuring jack right and left (see mounting points).The driven axle may only be balanced if both wheels are jacked up simultaneously.

- Set the sensitivity controller to position 3 for Schenck or 3.5 for Hofmann

- Make a measurement run at a speed of 130 km/h or 1150 - 1200 rpm (wheel rotations) with the Schenck RAW 04, in top gear or in the top driving position.

Fit appropriate balance weights.

- Make a check run. If the balance result is not acceptable, calibrate the finish balancer - i.e. adapt the sensitivity controller to the actual conditions.

- Subsequently (with a good balance result) slowly increase the speed to 190 km/h and pay particular attention to the areas where there are obvious vibrations in the steering wheel and/or in the seat (predominantly at 175 ± 5 km/h).

Maintain this speed and rebalance the wheels as for 130 km/h. Do not fit new weights, but make improvements by altering those already fitted according to the "balance correction" schematic.

Note: The Imbalance values apparent in this speed range are not "real" values. Their actual values amount to max. 1/4 - 113 of those indicated.

The subjective impression in the vehicle plays an important role. The balancing procedure may only be terminated when the driver can no longer detect vibrations caused by imbalance.

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