一台刚大修完的BJ212发动机 ,试车中发现 ,当发动机温度正常后 ,只要停车熄火 ,关闭发动机 ,散热器下端与水泵相连的胶管就会立即爆裂 ,冷却水四溢。起初认为是因胶管质量欠佳所致 ,然而重新更换新品后 ,胶管照旧爆裂。根据上述故障情况 ,我们认真回忆了冷却系各部分的维修经过 A newly overhauled BJ212 engine, the test found that when the engine temperature is normal, as long as the parking stall, turn off the engine, the radiator at the bottom of the hose connected to the pump will immediately burst, overflowing cooling water. Initially due to poor quality due to the hose, however, after the replacement of new products, the hose burst as usual. Based on the above fault conditions, we carefully recall the various parts of the cooling system after repair