A suspension system for a traveling vehicle body is disclosed. The system includes a suspension reference position varying mechanism (18) for varying a reference position of a suspension stroke of the suspension mechanism (100), and a controller (35) configured to calculate an intermediate value from a maximal value corresponding to the maximal position of the suspension stroke and a minimal value corresponding to the minimal position of the suspension stroke, and to control the suspension reference position varying mechanism such that, when the calculated intermediate values deviates from a set target range, the intermediate value is displaced toward the target range. The controller (35) increases a control execution frequency for the suspension reference position varying mechanism (18) when the traveling speed of the vehicle body is low, and reduces the control execution frequency for the suspension reference position varying mechanism (18) when the traveling speed of the vehicle body is high.

A sealing system includes a shaft seal plate, a seal guide having a tab, and a shaft seal coupled to the seal guide. A guide slot is formed in the shaft seal plate, and the tab extends into the guide slot. The shaft seal is configured to form and substantially maintain a seal at an axle bar as the axle bar rotates and pivots. The seal guide is configured to translate relative to the shaft seal plate as the axle bar pivots, and the tab is configured to block a rotation of the seal guide and the shaft seal relative to the shaft seal plate as the axle bar rotates.

Agricultural vehicle (V) includes an operator's seat (S), a vehicular structure (C), a wheel support arrangement (100), a front bumper assembly (200), a position and draft control mechanism (30), a brake pedal linkage mechanism (500), a steering mechanism (600) and an exhaust device (700). The operator's seat S is configured to be provided in the vehicle (V) at at least one of a first seating position (Sf) corresponding to a first driving position, and a second seating position (Sr) corresponding to a second driving position, where the second seating position (Sr) is opposite to the first seating position (Sf). The vehicular structure (C) is configured to be moved between at least one lowered position in which each final drive housing (FH) is locked to vehicular structure (C) at corresponding first locking positions, and at least one raised position in which each final drive housing (FH) is locked to vehicular structure (C) at corresponding second locking positions.

A plurality of traveling wheels are supported via expandable/contractible tubular support members to a vehicle body frame. A hydraulic operation type vehicle height adjustment mechanism provided for each one of the traveling wheels, the vehicle height adjustment mechanism being capable of switching a relative height of the traveling wheel relative to the vehicle body frame within a predetermined length range by expanding/contracting the support member by a hydraulic cylinder. There are provided a hydraulic control valve capable of controlling feeding state of work oil to each one of the plurality of hydraulic cylinders, a controlling section for controlling an operation of the hydraulic control valve to bring the vehicle body to a target state via vehicle height adjustment by the hydraulic cylinder in response to a change in the posture of the vehicle body and a plurality of accumulators connected oil chambers of the respective plurality of hydraulic cylinders.

A suspension system for a work vehicle includes a first cylinder having a piston side, a second cylinder having a piston side, and a first valve connected to the first and second cylinders, which extend and retract during a roll condition of the suspension system. The first valve selectively enables and restricts fluid flow between the piston side of the first cylinder and the piston side of the second cylinder to adjust a roll resistance of the suspension system.

An assembly system for components of a pressurized fluid supply system for an agricultural vehicle includes a body having at least one fluid duct connectable at one end to a pressurized fluid supply and having a socket at the other end. A detachable component such as an accumulator or oil filter is connectable in releasable mechanical engagement with the body to receive pressurized fluid from the at least one fluid duct. The engagement results from insertion of at least a portion of the component into the socket and rotation of the component to a locked position. The body has at least one discharge duct extending therethrough. In a partially rotated position of the component portion within the socket, the component remains mechanically attached to the body and the fluid duct and discharge duct are in fluidic connection, discharging accumulated pressure in the fluid duct.

A suspension system for a work vehicle includes a first cylinder having a piston side, a second cylinder having a piston side, and a first valve connected to the first and second cylinders, which extend and retract during a roll condition of the suspension system. The first valve selectively enables and restricts fluid flow between the piston side of the first cylinder and the piston side of the second cylinder to adjust a roll resistance of the suspension system.

An agricultural vehicle suspension may comprise a spring and a first spindle operably coupled with the spring in a spindle axial direction. A stop body may be operably coupled to the first spindle in a cylinder axial direction. The stop body may be configured to limit an axial length of travel of the suspension relative to the first spindle. The first spindle may be a steering spindle or a suspension spindle.

A work vehicle includes a chassis. An independent linear suspension system couples to the chassis. The independent linear suspension system includes a driveshaft that couples to the chassis and to a transmission. A wheel hub couples to the driveshaft and rotates a wheel in response to rotation of the driveshaft. A spindle couples to the wheel hub. A spindle carrier couples to the spindle. The spindle carrier defines a first aperture and a second aperture. A first pin extends through the first aperture. A second pin extends through the second aperture. The first pin and the second pin block rotation of the spindle carrier. The spindle carrier moves linearly along the first pin and the second pin.

A work vehicle, comprises: an operation section occupiable by an operator; a cabin accommodating the operation section; left and right suspension mechanisms via which a body of the work vehicle supports a left portion and a right portion of the cabin; and left and right lateral rods configured to allow the cabin to move upward and downward relative to the body and restrain the cabin from moving leftward and rightward relative to the body.