Check the wear of the journal and holes of the diesel generator water pump, which can be measured by vernier caliper and inner diameter dial gauge (as shown in Figure 2); Shell cracks, in addition to external observation and inspection, for small cracks, can be in the diesel engine is in the hot state of a layer of white powder, after (5 ~ 10) minutes, observe the crack position.
Disassembly steps:
1. After the pump is removed, it can be decomposed in sequence; After decomposition, the parts should be cleaned, and then check one by one to see whether there are cracks, damage and wear and other defects, if there are serious defects should be replaced;
2. water seal and seat repair: such as water seal wear groove, abrasive cloth can be ground, such as excessive wear should be replaced; Water seal seat such as rough scratches, available flat reamer repair or repair in the lathe; In the overhaul should be replaced with a new water seal assembly;
3. in the pump body with the following damage is allowed to repair welding: length within 30mm, does not extend to the bearing seat hole crack; The flange engaged with the cylinder head has broken part; Oil seal seat hole is damaged;
4. the bending of the pump shaft shall not exceed 0.05mm, otherwise it should be replaced;
5. Damaged impeller blades should be replaced;
6. the pump shaft aperture wear should be replaced or insert repair;
7. check whether the pump bearing rotates flexibly or has abnormal sound, if there is a problem with the bearing, it should be replaced;
8. after the assembly of the pump, turn it by hand, the pump shaft should not be stuck, the impeller and the pump shell should not rub; Then check the water pump displacement, if there is a problem, should find the cause and eliminate.
Jiangsu Meao Power Technology Co., Ltd. focuses on the development and manufacture of diesel generator sets, and has accumulated rich experience in manufacturing and service in this field. As a professional generator manufacturer, MEAOPOWER attaches great importance to product development, innovation and service quality, and maintains close strategic cooperation with famous domestic and international enterprises such as Cummins, Perkins, Doosan, Yuchai, Weichai, Shangchai, Wuxi Wandi, Lillesomer, Stanford, Marathon and so on.
