WIRING GP-COMBINED FLOW 2595045 - Caterpillar

Personal injury can result from hot coolant, steam and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove filler cap slowly to relieve pressure only when engine is stopped and radiator cap is cool enough to touch with your bare hand.Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.Cooling System Conditioner contains alkali. Avoid contact with skin and eyes.
Obtain the sample of the coolant as close as possible to the recommended sampling interval. In order to receive the full effect of S O S analysis, establish a consistent trend of data. In order to establish a pertinent history of data, perform consistent samplings that are evenly spaced. Supplies for collecting samples can be obtained from your Caterpillar dealer.Level 1 Analysis
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.
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.
Note: Obtaining a Coolant Sample (Level 1) is not necessary if the cooling system is filled with Cat ELC (Extended Life Coolant). Cooling systems that are filled with Cat ELC should have a Coolant Sample (Level 2) that is obtained at the recommended interval that is stated in the Maintenance Interval Schedule.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/coolantTesting the coolant can be done at your Caterpillar 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.
Illustration 1 g02950537
Park the machine on a hard, level surface. Set the engine at low idle speed.
Illustration 2 g03010237
Open the left engine access door.
Remove the cap to the S O S sampling valve that is located toward the front of the engine underneath the secondary fuel filter.Note: Always discard drained fluids according to local regulations.Use the following guidelines for proper sampling of the coolant:
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