Treadmill Rear Roller Faults – Belt Tracking and Tension Issues
Fix treadmill belt tracking and tension issues caused by rear roller faults. Learn to adjust your idler roller and diagnose bearing problems with our expert guide.
The Function of the Rear (Idler) Roller
The rear roller provides a smooth surface for the belt to travel over and is the primary point of adjustment for both belt tension and tracking (centering).
How to Adjust for Belt Tension
We provide a step-by-step on how to use the adjustment bolts on either side of the rear roller to increase or decrease belt tension, solving slipping or overload issues.
How to Adjust for Belt Tracking
Learn how to make small, independent adjustments to the left and right bolts to steer the belt back to the center of the deck if it has drifted to one side.
Diagnosing Rear Roller Bearing Noise
Just like the front roller, the rear roller bearings can fail, causing a loud grinding or rumbling noise. A technician can confirm this by running the treadmill and listening closely to the rear of the machine.