Note: Obtain a Coolant Sample (Level 1) if the cooling system is filled with any other coolant instead of Cat ELC. This sampling includes the following types of coolants.
- Commercial long life coolants that meet the Caterpillar Engine Coolant Specification -1 (Caterpillar "EC−1")
- Cat Diesel Engine Antifreeze/Coolant (DEAC)
- Commercial heavy-duty antifreeze/coolant
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Always use a designated pump for oil sampling, and use a separate designated pump for coolant sampling. Using the same pump for both types of samples may contaminate the samples that are being drawn. This contaminate may cause a false analysis and an incorrect interpretation that could lead to concerns by both dealers and customers. |
Obtain the sample of the coolant from surge tank as close as possible to the recommended sampling interval. To receive the full effect of S·O·S analysis, establishing a consistent trend of data is necessary. To establish a pertinent history of data, perform consistent samplings that are evenly spaced. Supplies for collecting samples can be obtained from your Cat dealer.
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products. Dispose of all fluids according to local regulations and mandates. |
Testing the coolant can be done at your Cat dealer. Caterpillar S·O·S Coolant Analysis is the best way to monitor the condition of your coolant and your cooling system.
Perform a Coolant Analysis (Level 1) at 250 hours for systems that do not contain extended life coolant (ELC).
Note: Level 1 results may indicate a need for Level 2 Analysis.
- Shut off the engine. Make sure that the engine fan blades stop rotating.
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Illustration 1 g06092652 - Open the top radiator cap access door). Remove the filler cap to take the coolant sample.
- Use the following guidelines for proper sampling of the coolant:
- Complete the information on the label for the sampling bottle before you begin to take the samples.
- Keep the unused sampling bottles stored in plastic bags.
- Keep the lids on empty sampling bottles until you are ready to collect the sample.
- Place the sample in the mailing tube immediately after obtaining the sample to avoid contamination.
- Never collect samples from the drain for a system.
Note: Always discard drained fluids according to local regulations.
- Replace the filler cap. Lock the top access door.
- Submit the sample for Level 1 analysis.
For additional information about coolant analysis, see Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations" or consult your Cat dealer.