BUCKET AS 2500493 - Caterpillar

Make sure you read and understand the information in the topics Safety and Cooling System Specifications for all information pertaining to water, antifreeze and supplemental coolant additive requirements before you proceed with maintenance of the cooling system.
To Drain the Cooling System
The filler cap is located inside the access door on the top of the radiator guard.
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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.Cooling System Conditioner contains alkali. Avoid contact with skin and eyes.
Slowly loosen filler cap (1) in order to relieve system pressure. Remove the filler cap.
Remove right access cover (2) and left access cover (3) for the coolant drain. One cover is located on the front right side of the machine, bottom guard. The other cover is on the left side of the machine, bottom guard.
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Direct the drain hoses into suitable containers.
Open the drain valve. Allow the coolant to drain into a suitable container.
Flush the system with water. Flush the system until the draining water is clear. Note: If the cooling system is already using ELC, cleaning agents are not required to be used at the specified coolant change interval. Cleaning agents are only required if the system has been contaminated by the addition of some other type of coolant or by cooling system damage. Clean water is the only cleaning agent that is required when ELC is drained from the cooling system.Note: If you change to an ELC from another type of coolant, use a Caterpillar cleaning agent to flush the cooling system. After you drain the cooling system, thoroughly flush the cooling system with clean water. All of the cleaning agent must be removed from the cooling system. Refer to the Topic “Cat Extended Life Coolant (ELC)” in Operation and Maintenance Manual, SEBU6250.
Close the drain valves and install the plug.
Replace the access covers.
Add the ELC solution. See the following topics in this publication:
Cooling System Specifications
Capacities (Refill) Note: Caterpillar antifreeze contains additives. If you are using Caterpillar antifreeze, do not add the supplemental coolant additive at this time. Also, do not change the supplemental coolant additive element at this time.
Start the engine. Run the engine without the filler cap until the thermostat opens and the coolant level stabilizes.
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Look into filler tube (1). Maintain coolant level between area (2) and area (3) of the filler tube. Adding coolant above this area of the filler tube will cause the coolant to overflow the cooling system.
If the gasket is damaged, replace the filler cap. Install the filler cap.
Stop the engine.
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Clean the radiator cores with compressed air. You may need to use water in order to remove debris.
Allow the radiator cores to dry completely before operating the machine in the work