Canon imageRUNNER ADVANCE 8105 Series Manual page 165

14) To attach the tension spring [1], hook the spring on [a], and then put on the hook[b].
[Caution] Be careful not to twist the hook part[a] of the tension spring[1].
If the hook part of the tension spring[1] is twisted, surplus stress will be generated to damage the spring.
15) Install in the reverse order from the step of 12).
[Replacement part]
FU8-2270 SPRING, TENSION
pg. 165