TUBE A 4D4036 - Caterpillar

You must read and understand the warnings and instructions contained in the Safety section of this manual before performing any operation or maintenance procedures.Cooling System Coolant (Extended Life Coolant/Antifreeze)
Clean/Flush/Change Coolant
This procedure pertains to machines using Extended Life Coolant/Antifreeze only.
Do not change the coolant until you read and understand the material in the Safety and Cooling System Specifications sections of this manual.
Caterpillar Extended Life Coolant/Antifreeze should be replaced every 6000 Service Hours or 4 Years, whichever comes first. Only clean water is needed to clean and flush the cooling system when ELCA is drained and replaced.Drain
1. Stop the engine and allow to cool. Loosen the radiator cap slowly to relieve pressure and remove the cap.2. Open the drain valve. Remove the block and oil cooler drain plugs. Remove the drain plug from the bottom of the water pump housing. Allow the coolant to drain into a suitable container.
Dispose of used engine coolant properly or recycle. Various methods have been proposed to reclaim used coolant for reuse in engine cooling systems. The full distillation procedure is the only method acceptable by Caterpillar to reclaim the used coolant. Contact your Elphinstone or Caterpillar dealer for information regarding disposal and recycling of used coolant.
Flush
3. Flush the cooling system with clean water to remove any debris.4. Clean and install all drain plugs and close the drain valve.5. Fill the system with clean water. Install the radiator cap. Operate the engine until warm, 49 to 66° (120 to 150 °F).6. Stop the engine and allow to cool. Loosen the radiator cap slowly to relieve pressure and remove the cap. Open the drain valve and allow the water to drain. Flush the cooling system with clean water until the draining water is clear.7. Close the drain valve.Fill
8. Fill the cooling system with ELCA. Add coolant slowly to avoid air locks, 20 liters (5 US gal) per minute. Refer to the Refill Capacities chart in this manual for the amount of ELCA needed to refill your system.9. Start and run the engine with the radiator cap removed. Allow the ELCA to warm, the thermostat to open and the coolant level to stabilize. Add ELCA if necessary to bring the coolant to the proper level.10. Inspect the condition of the radiator cap gasket. Replace the cap if damaged. If the gasket is not damaged, use a 9S8140 Service Tool to pressure test the radiator cap. The correct cap relief pressure is stamped on the radiator cap or refer to the Engine Specifications section of your machine Service Manual. If the radiator cap doe snot hold the correct pressure, install a new cap.11. Start the engine and inspect for coolant leaks and proper operating temperature.