One gear is unable to move or cannot move, and the other gears are normal. Solution: replace the bearing cover or nylon ring, inner and outer sealing ring, and readjust the clearance between the shaft sleeve and the bearing cove
One gear is unable to walk or does not walk, while other gears are normal. Solution: Replace the bearing cover or nylon ring, inner and outer sealing rings, and readjust the clearance between the shaft sleeve and the bearing cover.