When a belt breaks quickly after installation, it is likely due to one of the four reasons:
- It was not 100% seated in a pulley.
- Worn pulley bearings caused the belt to “walk off” the pulley surface.
- A damaged pulley could have ‘cut’ the belt.
- A malfunctioning tensioner caused belt misalignment and damage.
Be sure to check the tension and fit before completing the job and remember to change the pulley and tensioner when you replace a belt to avoid any issues like this.
