A front upper frame connection for a space frame can comprise a top surface; a bottom surface opposite the top surface; a right-side surface; a left-side surface opposite the right-side surface; a front surface; a rear surface opposite the front surface; a pair of forward support plates provided on the front surface; a pair of forward flat mounting surfaces; and a pair of rocker attachment interfaces located on the top surface adjacent to the rear surface and respectively the right-side surface and the left-side surface. The front surface and the forward support plates can define a cutout section. Each of the forward support plates is curved and runs outward from a transverse centerline of the top surface and then forward.

A front upper frame connection casting can comprise a vertical front upper frame connection boss oriented in a first downward direction and configured to weldably attach to a first elongate support member; a rearward angular front upper frame connection boss oriented in a second downward direction and configured to weldably attach to a second elongate support member different from the first elongate support member; and a center cast section castably attached to the vertical front upper frame connection boss and the rearward angular front upper frame connection boss. The center cast section can have a top surface configured to weldably attach to a front upper body support and frame connection fabrication of a space frame of a rear haul truck.

An engine mounting system for a work vehicle includes an engine mount configured to support an engine on a frame of the work vehicle. The engine mount has an engine mounting portion and a frame connection portion, an extent of the frame connection portion along a lateral axis of the engine mount is greater than an extent of the engine mounting portion along the lateral axis, the engine mounting portion has an opening configured to receive a fastener configured to couple the engine to the engine mount, the frame connection portion has a substantially flat contact surface configured to engage a corresponding substantially flat contact surface of a frame member of the frame, and the engine mounting portion does not contact the frame member while the substantially flat contact surface of the frame connection portion is engaged with the corresponding substantially flat contact surface of the frame member.

A utility vehicle comprises a plurality of ground engaging members and a frame supported by the plurality of ground engaging members. The frame includes a front frame portion, a mid-frame portion, and a rear frame portion. The utility vehicle further comprises an attachment supported at the front frame portion. Additionally, the utility vehicle includes an operator area supported by the frame and including an operator seat and an adjacent passenger seat spaced apart from the operator seat. The operator seat and the passenger seat are in a side-by-side arrangement. The utility vehicle also comprises an auxiliary power assembly having an attachment shaft configured to be operably coupled to the attachment. The attachment shaft extends in a generally longitudinal direction of the utility vehicle and projects outwardly from the front frame portion.

A work vehicle (1) comprising a forward part (3) and a rearward part (7) pivotally coupled about a main vertical pivot axis (10) for steering thereof. A power take-off shaft (29) is located adjacent a forward end (31) of the forward part (3) and is mechanically driven from a main output drive shaft (15) of an engine (14) located in the rearward part (7). A step-up gearbox (20) steps up the speed from the main output drive shaft (15) onto first and second output shafts (23, 24) for driving first and second hydraulic pumps (27, 28) which provide hydraulic supplies for motive power and for operating attachments attached to the forward end (31) of the forward part (3). A step-down gearbox (30) receives drive directly from the main output drive shaft (15) of the engine (14) and produces a stepped-down drive on an output shaft (33) of the step-down gearbox (30) with a gear ratio of 2:1. A main drive transmission shaft (35) transmits drive from the step-down gearbox (30) to the power take-off shaft (29) at the regulatory speed of a power take-off shaft in the range of 540 rpm to 1000 rpm, thereby minimising the speed of the mechanical drive required from the rearward part (7) to the forward part (3), and reducing the mechanical drives required from the rearward part (7) to the forward part (3) to a single mechanical drive.

Steering a vehicle in an electronic steering mode of operation that includes a front axle steering system, a rear axle steering system, one or more vehicle environment sensors, and a controller operatively coupled with the front axle steering system, the rear axle steering system, and the vehicle environment sensors. Commanding the vehicle to operate at a desired vehicle speed, detecting a lateral force acting on the vehicle in response to input from the vehicle environment sensors, and determining an actual lateral acceleration of the vehicle and a predicted lateral acceleration of the vehicle from the desired vehicle speed. Determining a lateral acceleration error by comparing the predicted lateral acceleration to the actual lateral acceleration, and determining if the lateral acceleration error exceeds a lateral acceleration limit, then turning both of the front axle steering system and the rear axle steering system to a crab steering correction angle.

An automatic steering system and method for an articulated work vehicle having a front wheel steering system supported by front wheels at a front frame and a rear frame supported by rear wheels rotatably coupled to the front frame at an articulator. A controller operatively connected to the front wheel steering system and to the articulator adjusts wheels of the front wheel steering system along a path and moves the articulator to direct the rear frame in response to a steering signal. The steering signal directs the vehicle in a minimum turn radius mode or a controlled traffic control mode. In the minimum turn radius mode, the rear wheels do not follow the tracks of the front wheels when making a turn. In the controlled traffic mode the rear wheels follow in same tracks as the front wheels.

A work machine includes an undercarriage assembly. The undercarriage assembly includes a chassis and a ground-engaging mechanism for rotating around the chassis to move the work machine. A pair of rails is coupled to the chassis. A pair of sliders is coupled to a front-assembly. The sliders are aligned with the rails and movable relative to the rails to facilitate movement of the front-end assembly relative to the chassis.

A track system for a vehicle has an attachment assembly mountable to a chassis of a vehicle and defining an attachment-assembly-pivotable connector pivot axis; a track assembly including a support frame disposed laterally outward from the attachment assembly, the support frame including a leading frame assembly and a trailing frame assembly, each frame assembly including a frame member connectable to the attachment assembly pivotable connector and a frame-suspension pivotable connector; at least one wheel-load-bearing connector, and at least one idler wheel being at least indirectly connected to the frame member via the at least one wheel-load-bearing connector. The track system further has a sprocket wheel, an endless track, and a suspension assembly having a forward suspension pivotable connector, a rearward suspension pivotable connector, and a suspension member operatively connected to the forward suspension pivotable connector and to the rearward suspension pivotable connector.

A forestry machine includes a ground propulsion apparatus, a chassis supported by the ground propulsion apparatus, a cab, an engine and a work implement. The chassis includes a front chassis portion and a rear chassis portion. The front chassis portion includes an upper portion and a lower portion. The rear chassis portion has a wood basket supported thereon. The cab is rotatably supported on the front chassis portion by a rotatable connection about a cab rotation axis to be selectively rotated 360 degrees. The engine is integrated into the front chassis portion. At least a part of the engine is disposed below an upper most surface of the upper portion. The work implement is movably attached to the cab. The work implement includes a boom movably attached to the cab, an arm movably attached to the boom, and a work tool attached to the arm.