The turning radius of a differentially steered vehicle towing a trailer is controlled when turning so that its turning radius is greater than a minimum allowable turning radius. The turning radius may be autonomously adjusted using a controller to monitor the instantaneous rotational speed differential between the driven wheels and increase or decrease the relative speed between the wheels when the instantaneous rotational speed differential exceeds a threshold rotational speed differential, indicating a turn which is too tight. Alternately, the turning radius may be controlled by the vehicle's operator, who receives a signal from the controller indicating that the vehicle's turning radius is less than the minimum allowable. The operator may then take action to enlarge the turning radius using manual controls.

A hitch that connects to a chassis of the work vehicle and rotates with respect to the chassis includes a first bracket connected to a first portion of the chassis, a first stabilizer bar connected to the first bracket, and a first hitch arm connected to the first stabilizer bar. The first hitch arm has a free end that engages a work implement. A second bracket is connected to a second portion of the chassis. The second portion of the chassis is spaced from the first portion of the chassis, so that the second bracket is spaced apart from and independent of the first bracket. A second stabilizer bar is connected to the second bracket. A second hitch arm is connected to the first stabilizer bar. The second hitch has a free end configured to selectively engage the work implement.

A hitch that connects to a chassis of the work vehicle and rotates with respect to the chassis includes a first bracket connected to a first portion of the chassis, a first stabilizer bar connected to the first bracket, and a first hitch arm connected to the first stabilizer bar. The first hitch arm has a free end that engages a work implement. A second bracket is connected to a second portion of the chassis. The second portion of the chassis is spaced from the first portion of the chassis, so that the second bracket is spaced apart from and independent of the first bracket. A second stabilizer bar is connected to the second bracket. A second hitch arm is connected to the first stabilizer bar. The second hitch has a free end configured to selectively engage the work implement.

A wear block assembly for a three-point hitch includes an actuator wedge that moves along a longitudinal axis relative to a lower lift arm of the three-point hitch. The actuator wedge also includes a tapered surface. The wear block assembly also includes a wear block that moves along a lateral axis relative to the lower lift arm and the wear block includes a wear surface that engages a sway block of the three-point hitch. The wear block also includes a contact surface that engages the tapered surface of the actuator wedge. The actuator wedge drives the wear block to move in a first direction along the lateral axis in response to movement of the actuator wedge in a second direction along the longitudinal axis.

A sway block assembly includes a sway block having a wear surface and a flange. The flange includes a first slot configured to receive a first fastener to secure the sway block to a member of a three-point hitch system. The wear surface is configured to contact a wear block of the three-point hitch system. The wear surface is not formed on the flange.

A sway block assembly includes a sway block having a wear surface and a flange. The flange includes a first slot configured to receive a first fastener to secure the sway block to a member of a three-point hitch system. The wear surface is configured to contact a wear block of the three-point hitch system. The wear surface is not formed on the flange.

An agricultural vehicle-trailer combination includes a traction module including a drive element for engaging in a ground, a working appliance coupled to the traction module by a coupling apparatus, and a folding axle supporting the working appliance relative to the ground at least during a transport mode. A slewing mechanism of the coupling apparatus provides a degree of freedom of rotation between the traction module and the working appliance along a longitudinal axis of the working appliance. A pivot joint provides a degree of freedom of pivoting between the traction module and the working appliance along a vertical axis of the traction module. The pivot joint is adjustable relative to its pivot angle by a steering actuator for influencing the direction of travel of the vehicle-trailer combination.

An agricultural vehicle-trailer combination includes a traction module including a drive element for engaging in a ground, a working appliance coupled to the traction module by a coupling apparatus, and a folding axle supporting the working appliance relative to the ground at least during a transport mode. A slewing mechanism of the coupling apparatus provides a degree of freedom of rotation between the traction module and the working appliance along a longitudinal axis of the working appliance. A pivot joint provides a degree of freedom of pivoting between the traction module and the working appliance along a vertical axis of the traction module. The pivot joint is adjustable relative to its pivot angle by a steering actuator for influencing the direction of travel of the vehicle-trailer combination.

A sway adjustment apparatus includes a casing, a fastener positioned within an interior of the casing, a first seal positioned near a first end of the casing between the fastener and the casing, a second seal positioned near a second end of the casing between the fastener and the casing, a cover positioned at a first end of the fastener, and end member positioned at a second end of the fastener. A first set of external threads on the fastener cooperate with internal threads in the casing. The first set of external threads and the internal threads are positioned between the first seal and the second seal. Rotating the fastener in a first direction extends the fastener from the casing. Rotating the fastener in a second direction retracts the fastener into the casing. The end member maintains the position of the fastener within the casing.

A sway adjustment apparatus includes a casing, a fastener positioned within an interior of the casing, a first seal positioned near a first end of the casing between the fastener and the casing, a second seal positioned near a second end of the casing between the fastener and the casing, a cover positioned at a first end of the fastener, and end member positioned at a second end of the fastener. A first set of external threads on the fastener cooperate with internal threads in the casing. The first set of external threads and the internal threads are positioned between the first seal and the second seal. Rotating the fastener in a first direction extends the fastener from the casing. Rotating the fastener in a second direction retracts the fastener into the casing. The end member maintains the position of the fastener within the casing.