Manual displacement control arrangement for an axial piston pump

A displacement control device for variably adjusting the displacement volume of a hydraulic axial piston pump comprising a rotary shaft mounted rotatable in a housing around a rotary shaft axis of the rotary shaft, said rotary shaft having a first end and a second end, wherein the rotary shaft is configured to open and close servo pressure lines arranged within the housing when a torque is applied to the second end, which protrudes outside of the housing, wherein the servo pressure lines are configured to conduct hydraulic fluid to and from a servo adjusting unit capable of adjusting the displacement volume of the axial piston pump, said rotary shaft further comprising a mid-portion located between the first end and the second end,

• wherein
• a detent sleeve is positioned concentric to the rotary shaft axis in the mid-portion of the rotary shaft, the detent sleeve comprising an abutment area onto which, in a neutral position of the displacement control device, a sliding element abuts, the sliding element being mounted pre-stressed in the housing and exerting a resilient force onto the detent sleeve transverse to the rotary shaft axis, wherein the detent sleeve in operating conditions of the displacement control device, is rotatably fixed to the rotary shaft and turns with the rotary shaft, wherein, for neutral position adjustments in non-operating conditions, the detent sleeve and the rotary shaft are detachable from each other, such that the rotary shaft is configured to be turned independently within the detent sleeve which is held in its neutral position by the resilient force of the sliding element onto the abutment area.