② Wear check around the solenoid pin
Guide bush wear
If it is worn, it will hinder the movement of the pin.
At first glance, it may be judged that it is hindering, but if it cannot be judged, it is judged from the degree of pin wobbling.
Internal cushioning material wear
Dust from wear may be blocking movement.
You won’t know unless you disassemble it.
Wear of the pin
The pin may be worn against the measuring length band.
If the pins are not integrated, the joints may be loose or dislodged.