Hydraulic stack auxiliary drive assembly

In a work vehicle having a power train including a power source having a drive shaft rotating about a rotation axis and having a hydraulic drive arrangement powered by the power source, the hydraulic drive arrangement having a first hydraulic drive component for powering a first component of the work vehicle and having a second hydraulic drive component for powering a second component of the work vehicle, the first and second hydraulic drive components being arranged along a drive axis that extends at an angle to the rotation axis of the drive shaft, an auxiliary drive assembly comprising:

• a mounting structure configured to mount the first hydraulic drive component in a fixed position with respect to the second hydraulic drive component along the drive axis;
• a first coupler coupled to the first hydraulic drive component and configured to rotate with respect to the drive axis;
• a second coupler coupled to the second hydraulic drive component and configured to rotate with respect to the drive axis;
• and
• a power takeoff device arranged along the drive axis between the first and second hydraulic drive components and coupled to the first and second couplers for co-rotation with respect to the drive axis, the power takeoff device being configured to transfer rotational power from the power source as received from the first hydraulic drive component to an auxiliary component of the work vehicle.