Cylinder appears inside and outside the leak, generally because of
1) Piston rod mounted eccentric,
2) insufficient supply of lubricants,
3) seals and seals are worn or damaged,
4) there are impurities in the cylinder and the piston rod caused by scars.
Therefore, when the cylinder inside and outside the leak, the piston rod should be re-adjust the center to ensure that the piston rod and
cylinder coaxial; must always check the oil mist is reliable, to ensure that the implementation of good lubrication; Ring and seal ring wear or
damage ring, it is necessary to replace; if there is impurities in the cylinder, should be promptly removed; piston rods on the scars should be replaced.