在修理汽、柴油机时,经常遇到因活塞磨损,必须更换新件。目前汽、柴油机多数是采用弹性挡圈固定活塞销,以防止活塞销位移。在修理时一般是用弯嘴钳和螺丝刀先将挡圈取下。在用弯嘴钳夹取挡圈时,由于弹性的作用或用力不均匀容易打滑,用螺丝刀硬撬常把挡圈损坏,其实只要把挡圈开口处任何一端稍微脱离开挡圈槽;然后用一根细铁丝穿入挡 In the repair of steam, diesel engine, often encountered due to piston wear, you must replace the new parts. At present, the majority of steam, diesel engine is the use of elastic ring fixed piston pin to prevent piston pin displacement. In the repair is generally used to bend nose pliers and screwdriver to remove the first ring. In the use of curved nose pliers when taking the ring, due to the role of the elastic or uneven force easily slippery, screwdriver often pry the ring is damaged, in fact, as long as the ring at either end of the opening slightly away from the ring groove; and then use A thin wire into the block