CHAIN A 0309068 - Caterpillar

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.
Note: This procedure pertains to Caterpillar Diesel Engine Antifreeze/Coolant (DEAC) only. This does not pertain to machines that are shipped from the factory with Extended Life Coolant (ELC) and machines that are maintained with Extended Life Coolant (ELC).
Do not change the coolant until you read and understand the material in the Cooling System Specifications section.
Drain the coolant whenever the coolant is dirty or whenever foaming is observed.Note: Refer to Operation and Maintenance Manual, "General Hazard Information" for information on Containing Fluid Spillage.
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Open the rear door for the engine on the rear of the machine. Use the prop rod to hold the rear door open.The radiator cap is located on top of the radiator on the right side of the machine.
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Remove the two bolts from the access plate. Remove the access plate.
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Slowly loosen the radiator cap in order to relieve system pressure. Remove the radiator cap.
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The drain valve is located on the bottom corner of the radiator. Open the drain valve. Allow the coolant to drain into a suitable container.
Close the drain valve. Fill the system with a solution which consists of clean water and of cooling system cleaner. The concentration of the cooling system cleaner in the solution should be between 6 percent and 10 percent.
Start the engine. Run the engine for 90 minutes. Stop the engine. Drain the cleaning solution into a suitable container.
While the engine is stopped, flush the system with water. Flush the system until the draining water is transparent.
Close the drain valve.
Add the coolant solution. See the following topics:
Special Publications, SEBU6250-11, "Caterpillar Machine Fluids Recommendations"
Operation and Maintenance Manual, "Refill Capacities"Note: If you are using Caterpillar antifreeze, do not add the supplemental coolant additive at this time and/or change the element at this time.
Start the engine. Run the engine without the radiator cap until the thermostat opens and the coolant level stabilizes.
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Open the access door for the coolant overflow reservoir.
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Maintain the coolant level between the "FULL" and the "LOW" marks that are located on the coolant overflow reservoir.
Install the radiator cap.
Stop the engine.
Close the rear door for the engine.