6 problems to pay attention to when repairing diesel generator sets6 problems to pay attention to when repairing diesel generator sets6 problems to pay attention to when repairing diesel generator set

Diesel generator sets can provide users with continuous and stable power support, is the first choice for emergency backup generators, but with the use of time, the unit is inevitable failure problems, in the repair of diesel generator sets, usually to disassemble the parts of the unit operation, generator manufacturers - top Bo power tips, in the diesel generator set to Generator set for replacement parts repair, the user must pay attention to the following six precautions.

 

1, assembly must pay attention to clean. Assembly of the internal body can not be mixed with mechanical impurities and dust, sludge, otherwise it will speed up the diesel generator set parts wear, but also easy to cause fuel system oil circuit blockage, so that the unit in the action is easy to produce burning tile holding shaft and other accidents. Such as the replacement of new injectors must be in 80 ℃ clean diesel fuel to remove the anti-rust oil, and sliding test before assembling and use.

 

2, pay attention to the assembly technology requirements. Repair personnel generally on the valve clearance, shaft clearance, etc. is more important, but some technical requirements are often ignored, such as the installation of the cylinder liner, the upper plane should be about 0.1 mm above the plane of the body, otherwise it will occur cylinder leakage or continuous bad cylinder gasket failure.

 

3, pay attention to some mating parts to be replaced in pairs. Injector needle valve coupling, plunger vice and oil valve vice three precision coupling to be replaced in pairs, which can generally do. But some other parts do not pay attention to pair replacement, such as replacement of gears, only replace the more serious wear a, assembly due to poor meshing, noise, increased wear, service life will be greatly shortened. Another example is the replacement of the cylinder liner, should also replace the piston and piston ring.

 

4, the parts of the variant products are not necessarily common. Some diesel engine factory sales of a certain type of variant products of many parts are not common. Such as S195B diesel engine crankshaft, main bearings, cylinder liners, pistons, intake and exhaust valves, valve guides and valve springs and other parts are not common.

 

5, the same model of different parts (accessories) are not common. In the use of repair size method, you can choose to increase the size of the parts, but must identify which level of parts. Such as the first grinding crankshaft can only be used to increase the 0.25 mm shaft tile, if you choose to increase the 0.5 mm shaft tile, shaft tile scraping volume increased, not only waste time, and can not guarantee the quality of repair, will also greatly reduce the service life of the shaft tile.

 

6, to prevent parts from being wrongly installed, missed. In terms of single-cylinder diesel engine has more than a thousand parts, and most of them have a certain installation position and direction requirements, such as not paying attention, it is easy to misload or omission. Such as the vortex chamber block position installed in reverse, the fuel can not directly through the starting spray hole, so that the engine starting difficulties or simply can not start.