Weifang drilling machine 4102 series diesel engine clutch group mill, wood chipper, cutting machine, crusher, pump and air compressor clutch belt wheel drives the equipment; types are mainly ZH4100, ZH4102, R4105, R6105 and R6113 diesel engine. If the piston rings caused by wear section shape change, gap ring and ring groove ring increases, elasticity and strength decreased so that the sealing is reduced, when increasing phenomenon occurs when channeling oil glue caused by ring stuck and broken