What parts don’t need lubricating oil?

What parts of the Cummins generator sets are not suitable for lubricating oil?

We all know that the conventional Cummins generator set can reduce the wear of parts and prolong the service life by the lubricationg oil, but in fact, there are some parts of the unit do not need to be coated with lubricating oil, and even the lubricationg oil will play the anti-wear role , so that some parts of the generator set do not need to be coated with lubricating oil? The following is a brief description of the engineer's 500KVA Cummins generator set in Nigeria.

For example Cummins dry cylinder generator set, if the dry cylinder liner is coated with lubricating oil, the generator may overheat and affect its normal operation. As the engine will produce high temperature during operation, the cylinder will expand when heated, but the cylinder block has small expansion due to cold water temperature and low temperature. The outer surface of the dry cylinder is close to the top of the hole, which is conducted in heat conduction. The outer surface of the cylinder is coated with butter lubricant, which prevents good contact between the two surfaces.

 Applying lubricating oil to the cylinder head and cylinder gasket for sealing and reinforcement is not worth the loss. After tightening the cylinder head, that part of the lubricating oil will be squeezed out of the cylinder and wasted, and the other part will be squeezed into the cylinder. When the generator is working, the lubricating oil will evaporate at high temperature, and the product is located on the top of the cylinder piston. When the temperature of diesel generator set rises, a layer of oil on the cylinder head, cylinder head gasket and cylinder block surface will disappear, and the cylinder head nut is loose, resulting in air leakage, air leakage and poor direct air. It may also be due to high temperature and coking of butter, which makes it difficult to disassemble the cylinder head and cylinder gasket.

Walter engineers will emphasize the above elements during the generator set maintenance training, so as to avoid the mistakes of customer maintenance. If you don't understand the above contents, you can contact Walter engineer or sales manager, and the technicians will serve you wholeheartedly.