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
Start the engine. Run the engine for 90 minutes. Stop
the engine. Drain the cleaning solution into a suitable
While the engine is stopped, flush the system with
water. Flush the system until the draining water is
Close the drain valve.
Add the coolant solution. See the following topics:
Operation and Maintenance Manual, "Cooling System
Operation and Maintenance Manual, "Refill Capacities"
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 cooling
system pressure cap until the thermostat opens and the
coolant level stabilizes.
Maintain the level of the coolant to the middle of the
Replace the cooling system pressure cap if the gasket is
damaged. Install the cooling system pressure cap.
Stop the engine.
Close the engine compartment.
Cooling System Coolant (ELC) - Change