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In This Issue
| - Diagnosing Leaky Systems
- Microdieseling and Its Effects on Oil
- How to Select the Best Flushing Oil
- Controlling Foam in Engine Oil
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| When diagnosing a leaky system, first look for things that may cause the leak. Leaks are often triggered by pressure buildup. Check for plugged vents, overfilling and elevated heat levels. Stress from too much torque can result in gasket failures that lead to leaks. (Craig Havener, Lafarge North America)
Join us in Nashville, Tenn., on Feb. 25-27 for
Machinery Lubrication training.
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| Microdieseling is a pressure-induced thermal degradation. An air bubble will transition from a low or negative pressure area to a high-pressure zone and through adiabatic compression get heated to very high temperatures. These temperatures are high enough to carbonize oil at the bubble interface, resulting in carbon byproducts (sludge and varnish) as well as increased oil degradation (oxidation). Find out how to stop the root cause of this problem so you can control microdieseling. |
FULL STORY
Question: What is the best flushing oil to use?
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Poll Question: Has overheating been a problem for any gearboxes at your plant?
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From "Automotive Lubricants and Testing":
The polar nature of engine oil additives gives rise to their foam-stabilizing properties. The splashing action or the mechanical agitation, or both, of the crankcase oil during engine operation causes air and other vapors to be whipped around, resulting in foam generation. In extreme cases, the oil actually can be lost because of the foam. The entrainment of the air in the oil can also decrease the ability of the oil to provide an effective hydrodynamic lubricating film because of the air bubbles that compromise the integrity of the film. |
Read more about "Automotive Lubricants and Testing"
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