CORE AS-POWER TRAIN OIL COOLER 2636402 - Caterpillar

S O S Analysis
Caterpillar recommends the use of the S O S oil analysis program in order to monitor the condition of your equipment. The S O S oil analysis program will complement your preventive maintenance program. Obtain S O S Sample
Before you obtain S O S sample, operate the machine until the oil is warm and the oil is well circulated. Then obtain the S O S oil sample.There are three ways to obtain S O S oil samples. The following methods are listed in the order that is preferred. * Use an in-line sampling valve for pressurized oil systems.* Use a sampling gun that is inserted into the sump. * Use the drain stream method when you change the oil.Use of the in-line sampling valve is the preferred method. This method provides samples that are less likely to be contaminated. Whenever you obtain the samples, obtain the samples from the same point. This makes the samples more representative of the oil that is in the system.In-line sampling valves cannot be used on nonpressurized oil systems such as differentials and final drives. Use of the sampling gun is the preferred method for nonpressurized oil systems.The drain stream method provides the poorest quality of samples. When you use the drain stream method to obtain a sample, allow some oil to drain first. Then take the sample. Do not use the oil at the beginning of the drain stream or from the end of the drain stream. This oil is likely to be contaminated. Therefore, this oil may not provide a good oil sample. Never obtain an oil sample directly from the filter housing or from the waste oil container.The S O S analysis is composed of three basic tests: * Wear metal analysis* Infrared analysis for oil condition* Tests for contamination of the fuel, the water, and the antifreeze.* Particle Count for hydraulics, transmissions, and other gear compartments.Sampling Interval and Location of the Sampling Valve
Take the oil samples as close as possible to the standard intervals. In order to receive the full value from S O S oil analysis, you must establish a consistent trend of data. In order to establish a pertinent history of data, perform consistent samplings that are evenly spaced.