A system for braking a track module of a work vehicle includes a frame, a track module supported relative to the frame, and a computing system. The track module includes an idler wheel, roller wheels, a track extending in an endless loop around the idler and roller wheels, and a tensioning actuator configured to adjust a tension on the track. The tensioning actuator increases the tension on the track from a lower tension to a higher tension when a braking operation in association with the track module is initiated and subsequently reduces the tension on the track from the higher tension to the lower tension when the braking operation is ceased.

A snowmobile extends along a longitudinal axis and includes a frame, a powertrain coupled to the frame and a track operatively coupled to the powertrain, the track having an upper run and a lower run. The snowmobile includes a rear suspension having at least one slide rail having a hyfax defining a plane, at least one front idler wheel in contact with the lower run of the track, at least one center idler wheel positioned adjacent the at least one front idler wheel, and at least one rear idler wheel positioned adjacent the at least one center idler wheel, and wherein the positioning of the at least center idler wheel is configured such that the at least one rear idler wheel is positioned at an angle relative to the plane having a value that is greater than zero.

A tensioning system of traction tracks of a machinery by means of a hydraulic cylinder applying a tensioning force on at least one of the wheels on which the track is wound according to a closed chain configuration in which the hydraulic cylinder is fed with different pressures according to the traction direction, in a first traction direction the feeding pressure of the tensioning hydraulic cylinder being a first pressure approximately corresponding to the pressure which is generated by a pump which is present on a closed circuit feeding the traction devices, in a second traction direction the feeding pressure of the tensioning hydraulic cylinder being a second pressure corresponding to the pressure of the closed circuit up to a predetermined upper limit value.

An apparatus having an accumulator fluidly coupled to a cylinder having a moveable rod and a pressure relief valve, the cylinder configured to produce an increase in resistance to retraction of the cylinder by re-routing fluid flow to the accumulator through the pressure relief valve after the rod has reached a defined retraction distance.

Power machines, power sources for power machines, and methods which provide a hydraulic signal from a hydraulic system, through the swivel joint or swivel, to control a tensioning cylinder coupled to the undercarriage without requiring a modification to the swivel. In exemplary embodiments, the same hydraulic signal provided to at least one other hydraulic component on the undercarriage to control another machine function is also provided to control one or more tensioning cylinders. For example, exemplary disclosed embodiments provide the same hydraulic signal to tension a tensioning cylinder as is provided to shift one or more two-speed drive motors. This prevents or reduces the likelihood of de-tracking without requiring a change or redesign of the swivel.

Tracked piste grooming vehicle for maintenance and shaping of snowy terrain, including a crawler chassis which includes, on each side of the chassis, a respective drive wheel, at least four running wheels and a tension wheel, all enclosed by a crawler chain, wherein each running wheel is mounted on a chassis frame in a pretensioned manner by a suspension. Each side of the chassis includes five respective running wheels, with the suspensions thereof having a different pretensioning distribution considered over a vehicle length.

A track drive cassette for a vehicle, comprising a drive motor adapted to power a drive sprocket, a continuous track having a portion adapted to engage with the drive sprocket, running wheels, and a return arrangement.

The present invention generally relates to vehicle and machinery in agriculture, construction, forestry, mining and powersport. It further generally relates to track systems and traction assemblies used with such vehicles. The track assembly includes components having particular features that, alone or in combination, participate in decreasing the vibrations 5 undergone by the vehicle. According to embodiments, split frames are used with suspension, tandem subassemblies, “tridem subassemblies”, adjustable damping components, drive shaft openings, lowering of resulting the track band tension and rosta assemblies.

A grease injection valve 10 is provided having a valve body 16 including a flow path 15 the valve body. A foreign matter intrusion prevention valve 18 is provided at the upstream side of a check valve 17 in the flow path 15 of valve body 16. Grooves 47 are positioned around the periphery of a foreign matter intrusion prevention valve body 44 in the flow path 15 to provide communication between the downstream side and the upstream side of the foreign matter intrusion prevention valve body 44. When the check valve 17 has a functional failure, high-pressure grease escapes through the grooves 47 to bypass the foreign matter intrusion prevention valve body 44 and is discharged to an exterior of the grease injection valve 10. This can avoid excessive pressure caused by the grease backflow from being applied to the foreign matter intrusion prevention valve 18.

A system and method for automatically adjusting the tension of a track on a snow machine, or other track-driven vehicle, is disclosed. The system includes an axle mounted in slotted adjustment holes with an axle bolt or other means to fix the axle to the track guide of the track-driven machine. The system also includes one or more biasing members to exert a force on the axle. When an axle bolt is loosened, the axle moves forward or backward in the adjustment slots to achieve the proper tension on the track. The axle bolt can then be tightened to fix the location of the axle in the adjustment slots at the location that provides proper tension for the track. The system obviates the need to use complicated tools and procedures to properly tension the track.