Work vehicle and work vehicle monitoring system

A work vehicle monitoring system comprising:

• a work vehicle;
• and
• a monitoring device provided on an exterior of the work vehicle, the monitoring device being configured to input information from the work vehicle,
• the work vehicle including
• an engine,
• a transmission arranged to change a speed of rotary motion of the engine,
• a steering clutch that transmits or cuts off power from the transmission, the steering clutch being engaged when supplied with hydraulic fluid,
• a rotary member having a first hydraulic fluid supply channel arranged to supply the hydraulic fluid to the steering clutch, the rotary member being rotated by the power from the transmission when the steering clutch is engaged,
• a drive unit driven by the rotary member,
• a support member having a second hydraulic fluid supply channel arranged to supply the hydraulic fluid to the first hydraulic fluid supply channel, the support member rotatably supporting the rotary member,
• a sealing ring disposed between the rotary member and the support member, the sealing ring being mounted adjacent to a connected part between the first hydraulic fluid supply channel and the second hydraulic fluid supply channel,
• a rotational speed sensor that senses a rotational speed of the rotary member,
• a controller that decides a pressure of the hydraulic fluid inside the first hydraulic fluid supply channel and the second hydraulic fluid supply channel, and performs control so that the pressure of the hydraulic fluid becomes the decided pressure, and
• an external output component that outputs determination basis data related to the decided pressure, the rotational speed, and a time when the pressure is controlled by the decided pressure while the rotary member is rotating, in a format that can be inputted by the monitoring device, and
• the monitoring device including an output component that 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.