When I unscrew the front derailleur bolt to adjust the cable (wrapping around B and C), the entire parallelogram rotates.
Part A: What is the appropriate way to unscrew the bolt?
- Hold the parallelogram in place with a pair of pliers, or
- Just rotate. The hinges in the front derailleur are designed to take the torque for removing/tightening the cable.
Part B: True or False: Since there is threadlocker applied to this bolt, there is no such a thing as a minor adjustment (unwind a little, set the cable right, wind back). The threadlocker must be re-applied, and so it's anyway necessary to first remove the bolt completely.
This is a sequel question.