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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. |
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Do not change the coolant until you read and understand the cooling system information in Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations". Failure to do so could result in damage to the cooling system components. |
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Mixing ELC with other products reduces the effectiveness of the coolant and shortens coolant life. Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specifications for premixed or concentrate coolants. Use only Caterpillar Extender with Caterpillar ELC. Failure to follow these recommendations could result in the damage to cooling systems components. If ELC cooling system contamination occurs see the topic Extended Life Coolant (ELC) in the Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations". |
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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. |
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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. |
| NOTICE |
|---|
|
Do not change the coolant until you read and understand the cooling system information in Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations". Failure to do so could result in damage to the cooling system components. |
| NOTICE |
|---|
|
Mixing ELC with other products reduces the effectiveness of the coolant and shortens coolant life. Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specifications for premixed or concentrate coolants. Use only Caterpillar Extender with Caterpillar ELC. Failure to follow these recommendations could result in the damage to cooling systems components. If ELC cooling system contamination occurs see the topic Extended Life Coolant (ELC) in the Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations". |
| NOTICE |
|---|
|
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. |
If the coolant in the machine is changed to Extended Life Coolant (ELC) from another type of coolant, refer to Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations", "Cat Extended Life Coolant (ELC)".
If the coolant is dirty or if you observe any foaming in the cooling system, drain the coolant before the recommended interval.
- Park the machine on a level surface and engage the parking brake. Stop the engine. Allow the engine to cool.
- Clean the area around the cooling system pressure cap of any dirt or debris. This must be done before the cooling system pressure cap can be removed.
- Slowly remove the cooling system pressure cap in order to release pressure.
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Illustration 1 g02141626 - The coolant drain valve is located behind guard (2). Remove access cover (1) for the coolant drain valve.
- Open the coolant drain valve. Drain the coolant into a suitable container.
- Flush the cooling system with clean water until the draining water is transparent.
- Close the coolant drain valve. Install the access cover.
- Add ELC. Refer to the following topics:
- Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations", "Cooling System Specifications"
- Operation and Maintenance Manual, "Capacities (Refill)"
- After the cooling system has been filled, perform the following procedures during initial start-up:
- Start the engine without the filler cap.
- Run the engine at low idle for 10 minutes.
- Then, increase the engine speed to a high idle until the water temperature regulator is open and the coolant level is stabilized.
- Maintain the coolant at the proper level as the water temperature regulator opens, and the air is purged from the system. Refer to Operation and Maintenance Manual, "Cooling System Coolant Level - Check".
- Install the cooling system pressure cap.
- Stop the engine.
