Trouble shooting Lubricants on the Web Part 1
Blogs and posts on the web pertaining to lubricant queries on the Noria forum
Blogs and posts on the web pertaining to lubricant queries on the Noria forum
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2/26/2017 Alarm Limits Topic<br />
find <strong>the</strong>se Limits <strong>on</strong> website of Nati<strong>on</strong>al Tribology Services<br />
(www.natrib.com/appnotes.htm)<br />
These Limits are following:<br />
Oil Analysis Test Caterpillar(all models) Cummins(all models) Detroit Diesel(all<br />
models)<br />
Spectroscopy, Ir<strong>on</strong> 100 ppm 84 ppm 150 ppm<br />
Spectroscopy, Copper 45 ppm 20 ppm 90 ppm<br />
Spectroscopy, Lead 100 ppm 100 ppm n<strong>on</strong>e specified<br />
Spectroscopy, Aluminium 15 ppm 15 ppm n<strong>on</strong>e specified<br />
Spectroscopy, Chromium 15 ppm 15 ppm n<strong>on</strong>e specified<br />
Spectroscopy, Tin 20 ppm 20 ppm n<strong>on</strong>e specified<br />
Spectroscopy, Sodium 40 ppm 20 ppm 50 ppm<br />
Spectroscopy, Bor<strong>on</strong> 20 ppm 25 ppm 20 ppm<br />
Spectroscopy, Silic<strong>on</strong> 10 ppm 15 ppm n<strong>on</strong>e specified<br />
Viscosity +20 % to 10 % of nominal SAE grade +/ 1 SAE grade or 4 Cst from<br />
new oil (Visc @ 100 ° C) +40 % to 15% of nominal grade (Visc @ 40 ° C)<br />
Water 0.25% max 0.2% max. 0.3% max<br />
TBN 1.0 mg KOH/g min value 2.0 mg KOH/g min., or <strong>on</strong>ehalf of new oil value,<br />
or equal to TAN 1.0 mg KOH/g min value<br />
Fuel Diluti<strong>on</strong> 5% max. 5% max 2.5% max<br />
Glycol Diluti<strong>on</strong> 0.1% max 0.1% max 0.1% max.<br />
Ferrography <strong>on</strong> excepti<strong>on</strong>s <strong>on</strong> excepti<strong>on</strong>s <strong>on</strong> excepti<strong>on</strong>s<br />
May be it will be useful for any<strong>on</strong>e.<br />
Mikhail<br />
Posts: 42 | Locati<strong>on</strong>: Almaty, Kazakhstan | Registered: Sun January 18<br />
2004<br />
Bala<br />
Level 1 1 to<br />
50 posts<br />
Mikhail,<br />
posted 20 Jun, 2004 18:29<br />
Interpretati<strong>on</strong> is not just comparing wear limits.Wear limits established by<br />
OEM's is<br />
statisticaly derived,and should be used as<br />
guidelines <strong>on</strong>ly.Alarm limits has to be established by trending<br />
approach,correlating<br />
field report with oil analysis reports.<br />
Hide Post<br />
Trend can be established by analysing three samples at regular intervals.Any<br />
gross deviati<strong>on</strong> from baseline signals problems.<br />
There are several factors which affect wear<br />
of engines.Overloading,Overspeeding,High operating<br />
temperatures,Envir<strong>on</strong>ment,Operating<br />
practices,Lubricant properties,c<strong>on</strong>taminati<strong>on</strong>,<br />
sampling procedures...all affect wear datas.<br />
When data reaches moderate level,sampling intervals has to be cut<br />
shortened,engine performance tests has to be carried out.<br />
Nevertear down engine based <strong>on</strong> single sample analysis.Several customers burnt<br />
<strong>the</strong>ir fingers<br />
by wr<strong>on</strong>g c<strong>on</strong>clusi<strong>on</strong>s.<br />
Worldwide cat dealers has excellent product support lab to help your needs.<br />
Bala.<br />
Posts: 50 | Locati<strong>on</strong>: INDIA | Registered: Sun February 08 2004<br />
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Oil Analysis Alarm Limits<br />
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