Track wheel suspension for a construction machine

A construction machine comprising:

• a track wheel suspension including a track wheel configured and arranged to be engageable to a track,
• a swing device comprising a first coupling portion and a second coupling portion, the first coupling portion being configured and arranged to rotatably support the track wheel,
• a swing bar comprising a first bar end, the first bar end being configured and arranged to be mounted to the second coupling portion of the swing device, the swing bar configured and arranged to provide a swing axis, wherein the swing axis is offset from a rotation axis of the track wheel such that a swing movement of the swing device enables a movement of the track wheel in a direction which is substantially perpendicular to the rotation axis, and
• a restraining mechanism configured and arranged to at least restrain a movement of the second coupling portion about the swing axis in at least a first direction,
• wherein the restraining mechanism is configured and arranged to force-transmittingly couple with at least one of one or more restraining portions of the swing bar so that movement of the at least one of the one or more restraining portions of the swing bar about the swing axis is restrained,
• wherein the restraining mechanism is configured and arranged to releasably lock at least one of the one or more restraining portions of the swing bar into a predetermined position, and
• wherein the restraining mechanism is configured and arranged to selectively provide a positive fit connection with the swing bar at the at least one of the one or more restraining portions of the swing bar during operation of the track wheel suspension.