A work vehicle monitoring system includes a work vehicle and a monitoring device provided on an exterior of the work vehicle. The work vehicle includes a steering clutch, a rotary member having a first hydraulic fluid supply channel, a drive unit, a support member having a second hydraulic fluid supply channel, a sealing ring disposed between the first hydraulic fluid supply channel and the second hydraulic fluid supply channel, a controller that controls a pressure of a hydraulic fluid inside the first hydraulic fluid supply channel and the second hydraulic fluid supply channel, and an external output component that outputs data related to the pressure, a rotational speed, and a time. The monitoring device accepts the data from the external output component and outputs maintenance information about the sealing ring when a predicted wear amount of the sealing ring obtained from the determination basis data exceeds a specific threshold.

A work vehicle monitoring system includes a work vehicle and a monitoring device provided on an exterior of the work vehicle. The work vehicle includes a steering clutch, a rotary member having a first hydraulic fluid supply channel, a drive unit, a support member having a second hydraulic fluid supply channel, a sealing ring disposed between the first hydraulic fluid supply channel and the second hydraulic fluid supply channel, a controller that controls a pressure of a hydraulic fluid inside the first hydraulic fluid supply channel and the second hydraulic fluid supply channel, and an external output component that outputs data related to the pressure, a rotational speed, and a time. The monitoring device accepts the data from the external output component and outputs maintenance information about the sealing ring when a predicted wear amount of the sealing ring obtained from the determination basis data exceeds a specific threshold.

A utility machine, such as an outdoor power equipment unit such as a lawn mower, includes a work unit performing work in addition to motive power for the utility machine and a trailer occupied by an operator in a standing position. The operator may seamlessly step onto the trailer to operate the machine in stand-on mode and step off the trailer to operate the machine in walk-behind mode. The trailer remains in the deployed condition in both stand-on mode and walk-behind mode.

A utility machine, such as an outdoor power equipment unit such as a lawn mower, includes a work unit performing work in addition to motive power for the utility machine and a trailer occupied by an operator in a standing position. The operator may seamlessly step onto the trailer to operate the machine in stand-on mode and step off the trailer to operate the machine in walk-behind mode. The trailer remains in the deployed condition in both stand-on mode and walk-behind mode.

A method of brake steering in a four-wheel drive utility vehicle having a driven front axle carrying at least two front wheels, a driven rear axle carrying at least two rear wheels, a powertrain delivering torque to the front axle via a first motor and to the rear axle via a second motor, a controlled clutch arrangement operable to couple the outputs of the first and second motors to vary the distribution of delivered torque between the front and rear axles, and independently operable service brakes on each of the front and rear wheels. The method includes determining a difference in wheel velocity between front and rear wheels; comparing the difference to a threshold value and, when exceeded, automatically engaging the controlled clutch arrangement. A determination is made as to whether or not the vehicle is performing a brake steering manoeuvre and the threshold value is adjusted accordingly. Additional braking force may be applied from independently operable park brakes on the rear wheels in inverse relationship to the level of service brake force applied.

A method of brake steering in a four-wheel drive utility vehicle having a driven front axle carrying at least two front wheels, a driven rear axle carrying at least two rear wheels, a powertrain delivering torque to the front axle via a first motor and to the rear axle via a second motor, a controlled clutch arrangement operable to couple the outputs of the first and second motors to vary the distribution of delivered torque between the front and rear axles, and independently operable service brakes on each of the front and rear wheels. The method includes determining a difference in wheel velocity between front and rear wheels; comparing the difference to a threshold value and, when exceeded, automatically engaging the controlled clutch arrangement. A determination is made as to whether or not the vehicle is performing a brake steering manoeuvre and the threshold value is adjusted accordingly. Additional braking force may be applied from independently operable park brakes on the rear wheels in inverse relationship to the level of service brake force applied.

The differential control device prohibits or limits a differential motion generated by the differential device. The sensor detects a turning angular velocity of the motor grader. Based on the turning angular velocity detected by the sensor, the controller controls the differential control device to perform the differential prohibition or limitation.

A method of brake steering in a four-wheel drive utility vehicle having a driven front axle carrying at least two front wheels, a driven rear axle carrying at least two rear wheels, a powertrain delivering torque to the front and rear axles via a connecting shaft, independently operable service brakes on each of the front and rear wheels, and independently operable parking brakes on each of the rear wheels. The method includes, on the vehicle entering a turn, applying the service brakes of the front and rear wheels on the inside of the turn and applying also, and to a controllably varied level of braking force, the parking brake on the rear wheel on the inside of the turn.

A method of brake steering in a four-wheel drive utility vehicle having a driven front axle carrying at least two front wheels, a driven rear axle carrying at least two rear wheels, a powertrain delivering torque to the front and rear axles via a connecting shaft, independently operable service brakes on each of the front and rear wheels, and independently operable parking brakes on each of the rear wheels. The method includes, on the vehicle entering a turn, applying the service brakes of the front and rear wheels on the inside of the turn and applying also, and to a controllably varied level of braking force, the parking brake on the rear wheel on the inside of the turn.

A combine harvester is provided with: a threshing device that performs a threshing process of threshing a crop; a grain tank that stores grain obtained by the threshing process; a grain discharging device that discharges grain to be stored in the grain tank to the outside of the vehicle body; a travel driving device that drives travel of the vehicle body; and an engine that serves as a power source. The combine harvester includes a first relay shaft to which power is transmitted from an output shaft of the engine, and the power of the engine is transmitted from the first relay shaft to the grain discharging device and the travel driving device in a branched manner.