A pin for a coupler assembly for rotatably coupling a beam of a circle assembly of a grader machine with a bracket of a moldboard assembly of the grader machine includes a body defining a head portion and a shank portion. The shank portion integrally extends from the head portion. The head portion is adapted to be seated over one or more of the beam and the bracket. The shank portion is adapted to pass through the beam and the bracket to rotatably couple the beam and the bracket about the shank portion. A grease gallery is defined through the head portion, extending into the shank portion. The body defines multiple grease passages branching out from the grease gallery up to corresponding sections of an outer surface of the shank portion where the beam and the bracket are correspondingly adapted to lie in rotatable registration with the shank portion.

A coupler assembly for rotatably coupling a moldboard of a grader machine includes a bracket, a beam, a pin, a retainer, and an apparatus. The bracket is adapted to support the moldboard. The beam extends from a circle member rotatably coupled relative to a drawbar of the grader machine. The pin is adapted to rotatably couple the bracket and the beam to each other. Further, the pin defines an end adapted to extend outwardly from an assembly of the bracket and the beam. The retainer is adapted to be engaged with the end to retain the pin with the assembly of the beam and the bracket. Moreover, the retainer defines at least one end portion extending outwardly from the end. The apparatus is adapted to be mounted around the pin at the end to shield the at least one end portion of the retainer extending outwardly from the end.

A protection system for a wire harness in a motor grader includes a controller and a sensor. The controller has a processor executing stored commands and a datastore with memory architecture containing stored angular orientation values for the circle frame. The sensor is coupled to one or more of the circle frame, the draft frame, and a circle actuator that rotates the circle frame relative to the draft frame. The sensor is configured to detect an angular orientation of the circle frame relative to the draft frame. The controller is configured to: receive input signals from the sensor indicating the angular orientation of the circle frame relative to the draft frame; query the datastore for a maximum angular orientation value of the circle frame; and terminate actuation of the circle actuator when the circle frame is at the maximum angular orientation value.

A work implement of a motor grader in which a blade can readily be replaced is provided. The work implement includes a shift cylinder assembly and a blade. The shift cylinder assembly includes a blade shift cylinder and a rail which carries out reciprocating motion with extending and retracting of the blade shift cylinder. The blade is removably attached to the shift cylinder assembly. The blade includes a hook and the shift cylinder assembly includes a hook reception portion. The hook is hooked on the hook reception portion.

A work vehicle including a body, an operational frame movable relative to the body about a primary joint, a linkage arrangement configured to adjust a position of the operational frame relative to the body, and a working implement coupled to the operational frame and movable relative to the body. A first sensor is positioned on the body. A second sensor is positioned on at least one of the operational frame, the linkage arrangement, and the working implement. A processor is configured to receive a first signal from the first sensor, where the first signal is representative of a measurement sensed by the first sensor, receive a second signal from the second sensor, where the second signal is representative of a measurement sensed by the second sensor, and determine a measurement error of the first sensor based on the signals from the first sensor and the second sensor.

A motor grader includes a vehicular body, a blade, a front wheel located in front of the blade, two rear wheels located in the rear of the blade, a first sensor which detects a position of the vehicular body as first sensor information, a second sensor which detects an inclination of the vehicular body as second sensor information, a first swing member which rotatably supports both of the two rear wheels arranged in the front and rear relation and is swingably supported by the vehicular body, and a third sensor which detects an angle of swing of the first swing member with respect to the vehicular body as third sensor information. A method of controlling a motor grader includes obtaining the first to third sensor information and calculating positions of the rear wheels based on the obtained first to third sensor information.

A motor grader including a frame and a scarifier system coupled to the frame. The scarifier system includes a first pin member and second pin member both coupled to the frame and interconnected to one another. The scarifier system also includes a first and second arcuate drawbar arms in spaced relation and coupled to the first pin member and a carriage. An actuator is coupled to the first arcuate drawbar arm and the second pin member to rotate the carriage about a pivot axis of the first pin member.

Graders and methods of operation thereof are disclosed herein. A grader includes a chassis, a saddle linkage, and a motion measurement system. The saddle linkage is supported for movement relative to the chassis and includes a mount movably coupled to the chassis, first and second arms each movably coupled to the mount, and a crossbar movably coupled to each of the first and second arms. The mount has a lock pin aperture, each of the first and second arms has a locking hole, and the crossbar has a plurality of locking holes. The lock pin aperture may be aligned with one locking hole of the first arm, the second arm, or the crossbar to position the saddle linkage in use of the grader. The motion measurement system is coupled to the saddle linkage and configured to measure movement or position of one or more components of the grader in use thereof.

Graders and methods of operation thereof are disclosed herein. A grader includes a chassis, a saddle linkage, and a motion measurement system. The saddle linkage is supported for movement relative to the chassis and includes a mount movably coupled to the chassis, first and second arms each movably coupled to the mount, and a crossbar movably coupled to each of the first and second arms. The mount has a lock pin aperture, each of the first and second arms has a locking hole, and the crossbar has a plurality of locking holes. The lock pin aperture may be aligned with one locking hole of the first arm, the second arm, or the crossbar to position the saddle linkage in use of the grader. The motion measurement system is coupled to the saddle linkage and configured to measure movement or position of one or more components of the grader in use thereof.

A mounting assembly for a blade of a motor grader is provided. The mounting assembly includes a mounting bracket having a mounting channel. The mounting assembly includes an adjustment block disposed in the mounting channel. The adjustment block includes a mounting groove and at least one slot disposed spaced apart with respect to the mounting groove. The mounting assembly also includes at least one retention plate disposed on the mounting bracket. The at least one retention plate is adapted to engage with the at least one slot provided on the adjustment block. The at least one retention plate is adapted to limit movement of the adjustment block along a longitudinal axis of the adjustment block. The mounting assembly further includes a wear element disposed in the mounting groove provided in the adjustment block. The wear element is adapted to slidably receive a portion of the blade thereon.