| When do you need to replace your lubricating | | | | contributing to acid corrosion and oxidation |
| oil? If you have | | | | of the oil, changing |
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| a large quantity of lubricating oil to | | | | the chemical composition of the oil itself. |
| change, it is going to | | | | However, if the water |
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| burn a hole in your pocket. So most plant | | | | content is below 0.5%, it can still be |
| operators try to | | | | removed by centrifugal |
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| preserve the properties of the lubricating | | | | purifiers.The total base number is |
| oil for as long as | | | | especially needed for the cylinder liner |
| | | | |
| possible.One of the most important functions | | | | lubrication of engines that run on poor |
| of lubricating oil is to | | | | quality fuel with high |
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| reduce the friction between the moving parts | | | | sulphur content. The base additive is used |
| of machinery. But | | | | to reduce the |
| | | | |
| there are other features to look at.When do | | | | corrosive effects of the sulphuric acid |
| you know that the oil needs to be changed? | | | | fumes on the cylinder.With large diesel |
| Below is a | | | | engine installations, the lubricating oils |
| | | | are |
| rough guide:1. Viscosity has changed by | | | | |
| 10% | | | | continuously filtered and purified to reduce |
| | | | the insoluble |
| 2. Flash Point has dropped to 150 degree | | | | |
| Celsius | | | | particles in the oil. Special strainers |
| | | | containing magnets are |
| 3. Water Content has reached 2% | | | | |
| | | | used to trap particles of carbon or iron |
| 4. TBN, or Total Base Number has reduced | | | | particles. In large |
| by 20% | | | | |
| | | | diesel engines, the carbon particles are |
| 5. Insoluble Content has increased to 5% | | | | byproducts of combustion |
| of the oilDue to the oxidation of the oil | | | | |
| when exposed to heat and oxygen, | | | | while the iron particles comes from rubbing |
| | | | of gears, cams or |
| the viscosity of the oil tend to reduce. | | | | |
| With the reduction of | | | | other parts where wear down still occur.The |
| | | | presence of these particles interferes with |
| viscosity, the film of oil between rubbing | | | | the lubrication of |
| metal surfaces | | | | |
| | | | bearings, most of which contain soft |
| becomes more difficult to maintain. This | | | | white-metal coating. The |
| results in metal to | | | | |
| | | | particles can become embedded into the soft |
| metal contact, micro seizures that leads to | | | | metal and cause |
| scuffing, abrasion | | | | |
| | | | abrasion of the metal parts.The contents of |
| and other damages.In large diesel engines, | | | | this page are part of a page from my e-book |
| fuel oil from dripping injectors or | | | | |
| | | | "General Engineering Knowledge Notes" that |
| fuel pumps sometimes finds their way into | | | | will help candidates |
| the lubrication oil | | | | |
| | | | prepare for the Marine Certificate of |
| sump. This has the tendency to reduce the | | | | Competency Examinations. |
| flash point of the | | | | |
| | | | This e-book is available for FREE |
| lubricating oil. In addition to reducing the | | | | downloading at |
| viscosity that is | | | | |
| | | | next time...Make "hard-to-find" Tools |
| detrimental to lubrication, this | | | | "easy-to-find". You can only Produce |
| contamination with fuel oil can | | | | |
| | | | YOUR BEST with THE BEST!" Earn praises for a |
| be quite dangerous. If there is a hotspot in | | | | job well done, |
| any of the rubbing | | | | |
| | | | only with the PROPER TOOLS! Locate |
| parts, this can lead to a crankcase | | | | Hard-to-Find Tools for your |
| explosion.Water can also find its way into | | | | |
| the lubricating oil from leaks | | | | garage and workshop. Good for Cars, Trucks, |
| | | | Cycles, Boats, and |
| in the cooling water system o-rings or | | | | |
| gaskets. In addition to | | | | Planes. |
| | | | |
| reducing the lubricating properties of the | | | | years of working experience in Marine, |
| oil, the presence of | | | | Facilities, |
| | | | |
| water in the oil can give rise to bacteria | | | | Construction has given the author material |
| or fungal growth, | | | | for writing e-books |
| | | | |
| which will quickly damage the oil properties | | | | and articles related to engineering, and |
| as well as | | | | management. |
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