An actuator control arrangement comprising: a hydraulic actuator having a housing and a piston rod axially moveable within the housing between a neutral position, a retracted position and an extended position with respect to the housing in response to application of pressure to the piston rod; a piston head separating the housing into a first chamber for retracting the piston and a second chamber for extending the piston; the arrangement further comprising a check valve moveable between a first position providing a flow path between a pressure source (HP,LP) and the first chamber , and a second position in which the flow path is closed off; and a mechanical link between the piston rod and the check valve, actuated in response to the piston rod passing a predetermined retracted position in a negative stroke direction, to set the check valve to the first position; a mode valve movable between a first position and a second position , wherein, in the second position , the mode valve provides a flow path from the second chamber to a low pressure source (LP); wherein the actuator control arrangement is configured such that when the check valve is in its second position , the mode valve is also in its second position ; wherein the check valve is biased to the second position by means of a spring and comprises a first port arranged to receive a pressure input from a pressure source and a second port arranged to receive a mechanical input from the mechanical link , whereby the pressure input or the mechanical input is sufficient to overcome the force of the spring to move the check valve to the first position. a hydraulic actuator having a housing and a piston rod axially moveable within the housing between a neutral position, a retracted position and an extended position with respect to the housing in response to application of pressure to the piston rod; a piston head separating the housing into a first chamber for retracting the piston and a second chamber for extending the piston; the arrangement further comprising a check valve moveable between a first position providing a flow path between a pressure source (HP,LP) and the first chamber , and a second position in which the flow path is closed off; and a mechanical link between the piston rod and the check valve, actuated in response to the piston rod passing a predetermined retracted position in a negative stroke direction, to set the check valve to the first position; a mode valve movable between a first position and a second position , wherein, in the second position , the mode valve provides a flow path from the second chamber to a low pressure source (LP); wherein the actuator control arrangement is configured such that when the check valve is in its second position , the mode valve is also in its second position ; wherein the check valve is biased to the second position by means of a spring and comprises a first port arranged to receive a pressure input from a pressure source and a second port arranged to receive a mechanical input from the mechanical link , whereby the pressure input or the mechanical input is sufficient to overcome the force of the spring to move the check valve to the first position. <EOS>