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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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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. |
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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. |
Reference: For information about adding Extender to your cooling system, refer to Operation and Maintenance Manual, "Cooling System Coolant Extender (ELC) - Add" or consult your Caterpillar dealer.
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 Extended Life Coolant.
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| Illustration 1 | g00303347 |
- Slowly remove the cooling system pressure cap on the left rear side of the machine in order to relieve system pressure.
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Illustration 2 g00306364 - Place the end of the drain hose into a suitable container.
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Illustration 3 g01110647 Show/hide table
Illustration 4 g00306363 - Open the engine access door on the right side of the machine. The coolant drain valve is beneath the oil filler tube. Open the drain valve. 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: Refer to Operation and Maintenance Manual, "Cooling Sytem Water Temperture Regulator - Replace" for the correct procedure.
- Add the Extended Life Coolant (ELC).
Reference: Refer to Operation and Maintenance Manual, "Refill Capacities" for the capacity of the cooling system.
- Start the engine. Run the engine without the cooling system pressure cap until the thermostat opens and the coolant level stabilizes.
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Illustration 5 g00306712 - Maintain the coolant level in the sight gauge.
- Install the cooling system pressure cap. Close the access door.
