Toromont CAT : Oil Analysis Services S·O·S - Proper Oil Sampling Using Vacuum Extraction

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PROPER OIL SAMPLING - VACUUM EXTRACTION

This sample method requires a Vacuum Pump (1U5718 or equivalent). Use this method for pressurized systems not equipped with sampling valves.

Again, it is important to use a new piece of tubing after sampling engine oil because soot and oil additives may remain in the tubing and contaminate other samples.

Install oil sampling valves
Most current CAT^® engines and machine models are equipped with sample valves for pressurized oil compartments. Some engines and machines may not have these valves, but it is easy and inexpensive to add them.
It is important to install valves in the correct location in each system and to avoid contaminating the system during installation. We can help you with specific installation procedures.

Use a tube cutting device
Cutting tubing with a pocket knife is difficult-and it allows particles that can contaminate your oil sample into the tubing. To avoid these problems, we recommend the Tube Cutter (1U7648), which allows you to make a quick, clean cut with just one hand. Replacement blades (1U8589) for the Tube Cutter are also available.

Keep sampling supplies clean
Dirty supplies can contaminate your samples and cause inaccurate results-so it is important to keep sampling supplies clean.
Keep new, empty oil bottles capped and store bottles and tubing in dust-free plastic bags. The vacuum pump and brass valve probe should also be protected from dust. If you feel a sample is contaminated, discard it and take another.

		STEP A Set the engine at low idle and remove the dust cap from the valve of the compartment you are sampling.
		STEP B Insert the probe into the valve and collect about 100 ml (4 fl oz) of oil into a waste container. Then dispose of the waste oil properly. (This process cleans the valve and helps ensure a representative sample.)
		STEP C Insert the probe into the valve again and fill the sample bottle three-quarters full-do not fill to the top. Do not allow any dirt to enter the bottle or bottle cap.
		STEP D Withdraw the probe from the valve and secure the cap on the bottle. Then place the bottle with the completed label into the shipping cylinder.
		STEP E Withdraw the probe from the valve and secure the cap on the bottle. Then place the bottle with the completed label into the shipping cylinder.

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