Use electric welding at down the cylinder area which need to be repaired, surface the leak direction with one or two 8-10mm sealing tape. With a ruler, rasp or scraper to measure and srape around the sealing tape, so that the height is equal to a large empty jar tightly half Cylinder bolts Check tightness when measured clearance value, and the entire sealing tape smooth transition, and then empty the cylinder large buckle tightly half cylinder bolts with a feeler review, the gap is less than 0.05mm qualified.