The service life and working reliability of diesel generator set not only depend on the structure improvement and product quality of the generator set itself, but also are closely related to the correct use and careful maintenance. Therefore, in order to keep the diesel engine working, we need to maintain the diesel engine regularly.
During the maintenance of Cummins generator sets, only oil is added or not replaced: oil is mainly used to lubricate, cool and clean Cummins generator sets. Many people will pay attention to check the amount of oil in lubricating oil and add it according to the standard, but ignore the inspection of lubricating oil quality and the replacement of deteriorated oil, resulting in some parts always running in poor lubrication environment and accelerating wear and tear.
Cummins generator sets use butter randomly during maintenance: Some maintenance personnel will apply a layer of butter to the cylinder pads when installing Cummins generator sets, believing that this will increase the sealing of the cylinder pads. As we all know, if the installation of butter on the cylinder liner, when the cylinder head bolt tightening, due to the influence of high temperature, part will flow into the cylinder combustion, the other part will stay in the cylinder block and cylinder head of the joint surface, so that the cylinder liner, cylinder head and body plane between the gap. High temperature and high pressure gas is easy to impact the cylinder pad from here, destroy the cylinder pad, resulting in air leakage.
Cummins generator set maintenance does not check the injection pump plunger stroke: Cummins generator set injection pump maintenance and debugging, maintenance personnel will directly repair, do not check the injection pump plunger stroke in advance, resulting in improper maintenance. Check the plunger travel of the injection pump in advance mainly to determine whether the injection pump is allowed to adjust. When checking, different methods should be adopted according to the different structure of the injection pump.
Cummins generator set in the maintenance of grinding bearing bush with emery cloth: due to the difficulty of scraping tile technology, it is difficult to master, in order to increase the contact area between bearing bush and crankshaft, some maintenance personnel will use emery cloth grinding rather than scraping tile. This approach is not advisable in actual maintenance. Because the abrasive particles on emery cloth are hard and the bearing bush alloy is soft, the abrasive particles are easily embedded in the alloy, and the diesel will accelerate the wear of the shaft journal and shorten the service life of the crankshaft.
During the maintenance process of Cummins generator set, the new products of cylinder liner and piston began to be installed: when replacing the cylinder liner and piston of Cummins generator set, many people think that the new cylinder liner and piston are standard parts, with interchangeability, and can be installed and used. In fact, both cylinder liner and piston dimensions are within a tolerance range. If the cylinder liner matches the piston, the clearance is too large, resulting in weak compression and difficult to start.
Post time: Nov-01-2022