Technician A says a special puller and installer tool is required to remove and install the vibration damper. Technician B says if the inertia ring on the vibration damper is loose, the damper must be replaced. Who is right?

Both of them are correct

Explanation:

Here both the technician are correct. A special puller and installer tool is required to remove and install the vibration damper. Removing and installing a damper is not an easy task, it requires a definite set of technique and tools.

According to Technician B if the inertia ring on the vibration damper is loose, the damper must be replaced is absolutely correct, inertia ring once loosened cannot be tightened. hence, we have change the the damper.