Gear assembly for an agricultural machine

The gearbox assembly has a mechanical stepped gearbox (14) and a hydrostatic gearbox (3) that is coupled to the stepped gearbox, where the hydrostatic gearbox has two hydrostatic partial gearboxes (10,11) which are connected parallel to each other with the stepped gearbox. The partial gearboxes are clamped opposite to one another in a switching of the stepped gearbox. The pumps (P1,P2) of the partial gearboxes are coupled together with fixed transmission over a common input shaft (2) or an input-sided gearbox.