A crawler has a track tensioning system. The crawler includes a crawler frame having a bottom; at least one drive tumbler supported on the frame; a track made of a plurality of connected track shoes and is wrapped around the drive tumbler so that a plurality of the shoes are in contact with the drive tumbler. The track tensioning system, mounted to the frame, includes a roller engaging the inside surface of the track; and a roller positioning structure attached to the frame that can raise the roller relative to the bottom of the frame to thereby increase...
1. A crawler for allowing a vehicle to move over the ground, having a track tensioning system, comprising: a) a crawler frame having a bottom;b) at least one drive tumbler supported on the frame;c) a track made of a plurality of connected track shoes and having a ground engaging surface and an inside surface opposite the ground engaging surface, the track being wrapped around the drive tumbler so that a plurality of the shoes are in contact with the drive tumbler, the track passing around the frame; andd) a track tensioning system comprising: i) at least...
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