A guard assembly for a work machine includes at least one guard including a body. The body in part defines a volume, a first opening, at least one second opening, and at least one pair of first retention tabs. The door defines a first end and a second end. In an open position of the door, the door provides access to the volume and, in a closed position of the door, the door limits access to the volume. The door includes a plate removably coupled to the guard proximal to the first end of the door by at least one fastener, and at least one coupling arrangement extending from the plate for pivotably coupling the plate to the guard proximal to the second end of the door. The coupling arrangement includes a first portion coupled to the plate and a second portion extending from the first portion.

A link assembly includes a first member, a second member opposing the first member and being rotatable around a rotating shaft, a seal housing formed between the first and second members, and a seal assembly disposed inside the seal housing. The seal assembly has a seal ring and a load ring. The seal ring has a support ring and a lip ring. The seal ring is disposed between the first member and the load ring. The load ring is disposed between the seal ring and the second member. The lip ring abuts the load ring. The lip ring has a first lip part that abuts the first member and protrudes in an axial direction of the rotating shaft, and a second lip part that abuts the second member and protrudes in a radial direction perpendicular to the rotating shaft.

A track roller assembly may have a track roller, a roller shaft and collars press fit onto either end of the roller shaft to retain the track roller on the roller shaft with an axial clearance between the collars and the track roller. During assembly, the collars may be press fit onto the shaft ends and forced axially inwardly until further axial movement of the collars is prevented by engagement shoulders of the track roller. A compressive axial load may be applied to the roller shaft to reduce a shaft length of the roller shaft and to cause the roller shaft to slide inwardly relative to the collars. The compressive axial load is removed from the roller shaft so that the roller shaft extends back to the normal shaft length and the collars move axially farther apart as the roller shaft extends back to the normal shaft length.

A track roller assembly may have a track roller, a roller shaft and collars press fit onto either end of the roller shaft to retain the track roller on the roller shaft with an axial clearance between the collars and the track roller. During assembly, the collars may be press fit onto the shaft ends and forced axially inwardly until further axial movement of the collars is prevented by engagement shoulders of the track roller. A compressive axial load may be applied to the roller shaft to reduce a shaft length of the roller shaft and to cause the roller shaft to slide inwardly relative to the collars. The compressive axial load is removed from the roller shaft so that the roller shaft extends back to the normal shaft length and the collars move axially farther apart as the roller shaft extends back to the normal shaft length.

Tracked vehicles and drive systems for tracked vehicles including a guard or shield for a drive motor that deflects debris drawn into a space where the drive motor is located. The guard also provides a longer critical path between the outside of a drive motor assembly and an inside of the drive motor assembly.

Tracked vehicles and drive systems for tracked vehicles including a guard or shield for a drive motor that deflects debris drawn into a space where the drive motor is located. The guard also provides a longer critical path between the outside of a drive motor assembly and an inside of the drive motor assembly.

A roller device includes a shaft, a bushing, a roller shell, a retainer, and an elastic member. The shaft has a rotation axis. The bushing has smaller-diameter parts on both ends and a larger-diameter part arranged between the smaller-diameter parts with stepped portions interposed therebetween, and is fitted over the outer circumference of the shaft to be rotatable relative to the shaft around the rotation axis. The roller shell has a cylindrical shape, and is fitted over the outer circumference of the smaller-diameter parts of the bushing to abut on the stepped portions. The retainer is formed annularly, is fixed detachably to an end face of the bushing, and abuts on the end face of the roller shell with the elastic member interposed therebetween.

In accordance with the present disclosure, a track chain assembly for a work vehicle may comprise of a link set, a unitary link, and a bushing assembly. The link set may include a first link and a second link. The unitary link may include a single link. The bushing assembly may couple the link set and the unitary link for relative rotation between the link set and the unitary link.

A track wheel for moving an object across a surface having a non-planar obstruction to allow smoother, easier and safer movement of the object over the obstruction. The track wheel has a track frame, a first wheel assembly, a second wheel assembly and a fluid-filled track assembly. The track frame interconnects the two wheel assemblies. The track assembly encircles the two wheel assemblies and frame in an endless loop manner. A mounting assembly connects the track frame to the object. The track assembly has a track link assembly and a pair of dampener tubes in the track link assembly. The track assembly passes into and out of a shield of the wheel assemblies that cleans the track assembly.

A track wheel for moving an object across a surface having a non-planar obstruction to allow smoother, easier and safer movement of the object over the obstruction. The track wheel has a track frame, a first wheel assembly, a second wheel assembly and a fluid-filled track assembly. The track frame interconnects the two wheel assemblies. The track assembly encircles the two wheel assemblies and frame in an endless loop manner. A mounting assembly connects the track frame to the object. The track assembly has a track link assembly and a pair of dampener tubes in the track link assembly. The track assembly passes into and out of a shield of the wheel assemblies that cleans the track assembly.