A mass equalization gear mechanism of an internal combustion engine is provided, having a gear mechanism housing with bearing points, at least one equalization shaft with a drive section and an imbalance section and rolling bearings by which the equalization shaft is mounted in the bearing points. Spring force of the disc spring acts only on the inside of the shank assembly. The second platform has a surface opposite to the main fluid path with recesses surrounded by a raised edge, which provides support for the mountable impingement plate.