It’s unclear exactly what happened to the crank pulley cover that caused the damage seen; either the cover was adjusted too far in or the cover was bent inwards. The misalignment caused the crank pulley to wear a semicircular slot into the crank pulley cover. The slot was welded closed and the various other dents were smoothed out.
![](https://benpatterson.org/wp-content/uploads/2011/08/cropped-Bus_070109_9-1.jpg)
![](https://benpatterson.org/wp-content/themes/languages/../pencilline.png)
![](https://benpatterson.org/wp-content/themes/languages/../pencilline.png)