After the stainless steel piston rod is processed, it is necessary to stop the water pressure test, and its water pressure is generally L 5 times the maximum working pressure. There shall be no leakage and residual deformation. When the piston rod and piston have cracks, they should generally be scrapped; the cylindrical surface of the piston is limited in wear due to the friction of the piston ring, and usually does not need to be repaired; when the diameter of the cylinder boring cylinder is enlarged, it is necessary to select new brackets according to the enlarged diameter size. Plug; repair only when the piston rod piston is worn or the piston rod piston ring groove and cylindrical piston pin hole are worn.
When the piston rod and piston are scratched or scratched, you can use a file to carefully file the abrasion and nodules, and then use a whetstone to gently polish and lubricate. When the small cylindrical piston pin hole is worn, the diameter of the piston pin should be enlarged according to the preparation. Use a piston reamer with a guide handle to stop the reaming. When reaming, do not use a short reamer, otherwise, the verticality of the center line of the piston rod and piston pin and the center line of the piston rod and piston is not easy to ensure.
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