An endless track assembly configured to mount to a rotating wheel drive of a vehicle. The endless track assembly has a rotatable drive sprocket for driving an endless track about a frame and idler wheels. Guide rollers mounted to the frame support and rotate with the drive sprocket and limit the movement of the drive sprocket relative to the frame.

A tension monitoring system for a track-type machine, including a track adjuster configured to be attached to a front idler and a rear idler of a roller frame of a track-type drivetrain, and move the front idler relative to the roller frame; a sensor mounted to the front idler configured to measure a position of the front idler relative to the roller frame; and a controller connected to the sensor configured to receive a front idler position in response to a wear indicator of a service interval for the track-type machine, evaluate the front idler position reading compared to a predicted front idler position, calculate an adapted wear rate and an adjustment interval, and rewrite a predicted wear rate based on the adjustment interval.