Does the heavy duty vehicle use high viscosity lubricating oil or low viscosity lubricating oil after the overhaul?
Answer: Although the metal processing technology is very advanced now, but the new equipment starts to use, needs the running in is forever exists. Therefore, the overhaul of the vehicle engine need to run in, so the overhaul of the vehicle engine must use low viscosity lubricating oil.
There are three reasons:
1) the use of low viscosity lubricating oil is conducive to the rapid lubrication of lubricating oil parts, reduce the time of dry friction;
2) it is beneficial to cleaning, and is beneficial to filtration of metal abrasive grains;
3) using low viscosity lubricating oil is beneficial to heat radiation, because the new surface will inevitably exist burrs, they will be running in the process of grinding, it will produce a lot of friction heat.
After overhaul of the vehicle, if the use of lubricating oil high viscosity, easy to cause early wear, offset and engine burnt pull cylinder fault.
What is the color of grease and its quality?
Answer: oil manufacturers use colorants just to identify greases so that they are more attractive than brown or black. The color can help users to find the wrong oil, for example, a certain color of the oil from the oil gun out, is not consistent with another color when expected.
The color of grease can also reflect its overall quality. When oil is degraded and contaminated, it usually starts to darken. This darkening, when compared with the new grease, will be more obvious, may be a sign that the grease has reached the scrap limit. Although the color of oil should be darker, it should not be surprising, and its darkening speed is an important factor.
In addition to the darkening of oils due to operating and environmental conditions, the color shift may be a sign of accidental mixing of grease with different types of greases. If this happens, immediate action should be taken to determine how and why this happens. Careless use of false greases is more common than most people realize. A quick solution is to use different types of fittings for different types of grease, such as normal accessories for button head accessories independent bearing and motor bearing. Another option is to leave a piece of grease remaining in the fat to mark the proper color. This is the only thing that should be done only on the device of a single type of specific color grease. Grease type and color should also be marked on the grease gun.
Remember, when the color of the lubricating grease to provide quality information as possible, it is just as a brand to represent the type of grease (usually by thickener type.) But remember, no oil color is guaranteed to specify a specific thickener, even in a single lubricant manufacturer's product.
