A.220V,50HZ B.380V,50HZ C.36V,50HZ
A.加強(qiáng)供油 B.以排掉管路和油缸的空氣 C.調(diào)節(jié)間隙
A.活塞有裂紋 B.冷卻水泵有故障 C.缸蓋或缸套有裂紋