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Topping off or mixing Cat ELC with other products that do not meet Caterpillar EC-1 specifications reduces the effectiveness of the coolant and shortens coolant service life. Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specification for pre-mixed or concentrate coolants. Use only Extender with Cat ELC. Failure to follow these recommendations can result in shortened cooling system component life. |
If an Extended Life Coolant was previously used, flush the cooling system with clean water. No other cleaning agents are required. Use the following procedure to change the cooling system coolant (ELC):
- Remove bolts (1) and the access door (2) on the top front part of the machine.
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Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure.
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Illustration 2 g01118820 - Slowly loosen the cooling system pressure cap (3) in order to relieve system pressure.
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Illustration 3 g01180997 - Remove the bottom guard at the front of the machine. Pull out the drain hose through the opening.
- Open the engine access door on the left side of the machine.
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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.
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Illustration 4 g01204097 - Open the drain valve at the bottom of the radiator. Allow the coolant to drain into a suitable container.
- Flush the cooling system with clean water until the draining water is clean. Close the drain valve.
- Replace the water temperature regulator.
Reference: For the correct procedure, refer to Operation and Maintenance Manual, "Cooling System Water Temperature Regulator - Replace".
- Add the Extended Life Coolant (ELC).
Reference: For the capacity of the cooling system, refer to Operation and Maintenance Manual, "Capacities (Refill)".
- Start the engine. Run the engine without the cooling system pressure cap until the water temperature regulator opens and the coolant level stabilizes.
- Stop the engine.
- Install the cooling system pressure cap (3).
- Install the access door (2) and the bolts (1).
- Check the cooling system coolant level.
Reference: For the correct procedure, refer to Operation and Maintenance Manual, "Cooling System Coolant Level - Check".
- Reinstall the bottom guard.
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| Illustration 1 | g01118819 |
