1) Check the base and shell and clean them. The paint is required to be in good condition.

2）检查定子铁芯、绕组、机座内部，并清扫灰尘、油垢和杂物。绕组上的污垢，只能用木质或塑料制的铲子清除，并用干净抹布擦拭，注意不能损伤绝缘。

2) Check the stator core, winding and the inside of the frame, and clean up the dust, oil dirt and sundries. The dirt on the winding can only be removed with a shovel made of wood or plastic, and wiped with a clean cloth. Pay attention not to damage the insulation.

3）检查定子外壳与铁芯的连接是否紧固，焊接处有无裂纹。

3) Check whether the connection between the stator shell and the iron core is tight and whether there are cracks at the welding part.

4）检查定子及其零部件的完整性，配齐缺件。

4) Check the integrity of stator and its parts, and complete the missing parts.

5）用1000-2500V的兆欧表测量三相绕组的绝缘电阻，若阻值不合格，应查明原因并进行相应的处理。

5) Use 1000-2500v megger to measure the insulation resistance of three-phase winding. If the resistance value is unqualified, find out the reason and take corresponding treatment.

6）检查定子铁芯硅钢片有元锈斑、松动及损伤现象。若有锈斑，可用金属刷子刷除后涂上硅钢片漆。若有松动现象，可打入薄云母片或环氧玻璃胶板制的楔子。如发现有局部过热引起的变色锈斑，应做铁芯试验，当铁损和温升不合格时，应对铁芯进行特殊处理。

6) Check the silicon steel sheet of stator core for rust, looseness and damage. If there are rust spots, the metal brush can be used to brush off and then coated with silicon steel sheet paint. If there is looseness, wedge made of thin mica sheet or epoxy glass rubber plate can be driven. If discoloration and rust spots caused by local overheating are found, the iron core shall be tested. When the iron loss and temperature rise are unqualified, the iron core shall be specially treated.

7）检查定子槽楔有无松动、断裂及凸出现象，检查通风沟内的线棒有无胀鼓情况。如楔子和绝缘套发黑，说明有过热现象，应消除通风不良现象或降低负荷运行。检查端部绝缘有无损坏。当绝缘垫块和绝缘夹有干缩情况时，可加垫或更换。端部绑扎如有松动，可将旧绑线拆除，用新绑线重新绑扎。

7) Check whether the stator slot wedge is loose, broken and protruding, and check whether the winding bar in the ventilation ditch has bulge. If the wedge and insulating sleeve are blackened, it indicates that there is overheating phenomenon, and the phenomenon of poor ventilation shall be eliminated or the load operation shall be reduced. Check the end insulation for damage. When the insulation cushion block and insulation clamp have dry shrinkage, cushion can be added or replaced. If the end binding is loose, the old binding wire can be removed and the new binding wire can be used to bind again.

8）检查定子铁芯夹紧螺钉是否松动，如发现夹紧螺母下面的绝缘垫损坏，应更换。用500-1000V兆欧表测量夹紧螺钉的绝缘电阻，一般应为10-20兆欧姆。

8) Check whether the clamping screw of stator core is loose. If the insulation pad under the clamping nut is damaged, replace it. Use 500-1000v megger to measure the insulation resistance of clamping screw, which should be 10-20 megohm.

9）检查发电机引出线头与是缆连接的紧固情况。

9) Check the tightness of the connection between the generator lead-in head and the cable.

10）检查轴承有元向绕组端部溅油的情况。如绕组端部粘有油垢，可用干净的布浸以汽油或四氯化碳擦拭。如端部绝缘受油侵蚀比较严重，必要时可喷一层耐油防护漆。

10) Check whether there is oil splashing at the end of the winding. If there is oil dirt on the end of winding, clean cloth can be dipped in gasoline or carbon tetrachloride to wipe. If the end insulation is seriously corroded by oil, a layer of oil resistant protective paint can be sprayed if necessary.

11）检查并修整端盖、窥视窗、定子外壳上的毡垫及其他接缝处的衬垫。

11) Inspect and trim the end cover, sight glass, felt pads on the stator housing and gaskets at other joints.