Easy adjust tensioner assembly

A tensioning assembly for a drive system of an agricultural machine, the tensioning assembly comprising:

• a tensioning arm configured to be pivotally mounted to a machine carrying the drive system;
• a tensioning device mounted to the tensioning arm and configured to apply a tensioning force directly to the drive system;
• and
• a bracket configured to be mounted to the machine;
• an attachment device attached to the tensioning arm at an attachment point;
• a longitudinal bar having a longitudinal axis, a top end, a bottom end, a threaded portion, and an engagement head attached to and located at or proximate the bottom end of the longitudinal bar and fixed relative to the longitudinal bar, wherein:
• the top end of the longitudinal bar is coupled to the attachment device, the longitudinal bar is rotationally freely coupled to the attachment device to permit free axial rotation of the longitudinal bar about the longitudinal axis relative to the attachment device;
• and
• the engagement head is configured for engagement with a tool such that rotation of the engagement head by the tool drives rotation of the longitudinal bar;
• a compression spring having first and second ends, the spring located around a portion of the longitudinal bar;
• a first spring retainer engaging with and retaining the first end of the compression spring;
• and
• a first locking nut fitted to the threaded portion of the bar and retaining the first spring retainer longitudinally in place relative to the bar;
• wherein the second end of the compression spring is in direct or indirect physical contact with the bracket, such that compression of the compression spring applied by and between the bracket and the first spring retainer applies a resultant force to the tensioning arm, via the attachment point, about the pivot mounting point of the tensioning arm, which produces the tensioning force to force the tensioning device into contact against the drive system.