1、轴瓦的清洗与检查  

    大型(xing)电机轴承均(jun)单独装箱运来，开箱后(hou)先(xian)用吊环(huan)螺丝(si)将上瓦(wa)和(he)下瓦(wa)分别取(qu)出作(zuo)好记(ji)号并(bing)用煤(mei)油(you)清洗(xi)，用干(gan)布擦干(gan)并(bing)检查所有槽沟(gou)是否干(gan)净，有无(wu)铸造残(can)留砂子，钨金层与瓦(wa)体结合不好，划出的沟(gou)道、裂(lie)纹存在砂眼(yan)和(he)其它掺杂物(wu)等）。若无(wu)法修复时，则要重新挂钨金。  

2、轴承座的清洗与检查  

    轴(zhou)(zhou)(zhou)承(cheng)座安装引前(qian)，也应进(jin)(jin)全(quan)面清洗检查(cha)。将轴(zhou)(zhou)(zhou)承(cheng)座内腔用刮刀将脏物(wu)刮去，用布蘸汽油(you)或溶剂将脏物(wu)擦净(jing)，观看有无裂(lie)纹及(ji)(ji)砂眼(yan)，以防止(zhi)在运行(xing)中(zhong)出现(xian)渗(shen)油(you)。轴(zhou)(zhou)(zhou)承(cheng)盖与(yu)轴(zhou)(zhou)(zhou)承(cheng)座接合面，轴(zhou)(zhou)(zhou)承(cheng)座与(yu)轴(zhou)(zhou)(zhou)承(cheng)挡(dang)油(you)圈(quan)结(jie)合面应进(jin)(jin)行(xing)研刮配合，并用塞尺(chi)检查(cha)，其间隙不得大于(yu)0.03毫米(mi)。放置轴(zhou)(zhou)(zhou)承(cheng)座的(de)底(di)板表面也要(yao)清理干净(jing)，不应有碰(peng)伤、锈蚀(shi)和毛刺。紧固轴(zhou)(zhou)(zhou)承(cheng)座的(de)螺钉(ding)及(ji)(ji)座板螺纹均要(yao)他细检查(cha)，并试拧螺钉(ding)检查(cha)是否过紧或秃扣。  

3、轴承绝缘结构  

    轴承(cheng)和(he)底(di)板之(zhi)(zhi)间必须垫(dian)(dian)以(yi)(yi)绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)垫(dian)(dian)板或金(jin)属(shu)垫(dian)(dian)片，金(jin)属(shu)垫(dian)(dian)片用(yong)来(lai)调整(zheng)座水平位(wei)置(zhi)(zhi)。以(yi)(yi)调整(zheng)该电(dian)(dian)(dian)机和(he)相联结的另一台电(dian)(dian)(dian)机或机械的相对位(wei)置(zhi)(zhi)。金(jin)属(shu)垫(dian)(dian)片是由0.08~3毫(hao)(hao)(hao)米(mi)的金(jin)属(shu)薄(bo)板制(zhi)(zhi)成。绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)垫(dian)(dian)板是由布质层压板或玻璃丝层压板制(zhi)(zhi)成。放置(zhi)(zhi)绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)垫(dian)(dian)板的目的主(zhu)要是防止轴电(dian)(dian)(dian)流(liu)的危害。绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)垫(dian)(dian)板应比轴承(cheng)座每边宽出(chu)5~10毫(hao)(hao)(hao)米(mi)，厚(hou)(hou)度为3~10毫(hao)(hao)(hao)米(mi)。除在轴承(cheng)和(he)底(di)板之(zhi)(zhi)间放置(zhi)(zhi)绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)垫(dian)(dian)板之(zhi)(zhi)外，同时将螺钉(ding)和(he)稳(wen)钉(ding)也应加以(yi)(yi)绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)。绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)垫(dian)(dian)圈(quan)用(yong)厚(hou)(hou)度2~5毫(hao)(hao)(hao)米(mi)玻璃丝布板制(zhi)(zhi)成，其外径比铁垫(dian)(dian)圈(quan)外径大4~5毫(hao)(hao)(hao)米(mi)。与轴承(cheng)座相接的油(you)管(guan)接盘绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)垫(dian)(dian)可用(yong)厚(hou)(hou)度为1~2毫(hao)(hao)(hao)米(mi)橡胶板制(zhi)(zhi)成。绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)的轴承(cheng)座安装后应检查(cha)对地绝(jue)(jue)(jue)缘(yuan)(yuan)(yuan)(yuan)电(dian)(dian)(dian)阻(zu)，用(yong)500伏(fu)兆欧表测量，其阻(zu)值应不小于1兆欧。