HOSE A. 4D4029 - 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 (Conventional Coolant/Antifreeze)
Change Coolant/Clean System
This procedure pertains to machines using conventional coolant/antifreeze only.
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 foaming is observed. 1. Remove the radiator cap slowly to relieve pressure. 2. Open the drain valve and allow the coolant to drain into a suitable container. The drain valve is located on the bottom radiator pipe.
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.
3. Close the drain valve. Fill the system with clean water and a 6 to 10% concentration of cooling system cleaner.4. Start and run the engine for 90 minutes. Stop the engine and drain the cleaning solution into a suitable container.5. Flush the system with clean water, with the engine stopped, until the draining water is clear.6. Close the drain valve.7. Add the coolant solution. Add coolant slowly to help avoid air locks, 20 liters (5 US gal) per minute. See Cooling System Specifications and Refill Capacities. Do not add supplemental coolant additive or change the element at this time, unless you are not using Caterpillar Antifreeze which contains additive.8. Start and run the engine with the radiator cap removed, until the thermostat opens and the level stabilizes. Check for leaks.9. 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 does not hold the correct pressure, install a new cap. 10. Maintain the coolant level to within 13 mm (1/2 in) of the bottom of the fill pipe or to the proper level on the sight gauge.11. Install the radiator cap.12. Stop the engine.Cooling System Coolant (Extended Life Coolant/Antifreeze)
Add "Extender"
This procedure pertains to machines using Extended Life Coolant/Antifreeze only.Extender should only be added to ELCA after 3000 Service Hours or 2 Years, which ever comes first. Add Extender to the coolant to obtain a 2.2 0.3% Extender concentration.1. Stop the engine and allow to cool.2. Remove the radiator cap slowly to relieve pressure.3. The cooling system should be treated with .97 liter (1 qt) of Extender for every 46 litres (12 US gal) of cooling system capacity.4. Install the radiator cap.For more Extender Information, refer to the topic Caterpillar's Extended Life Coolant/Antifreeze in the Cooling System Specifications section of this manual.Clean Outside of Radiator Fins
Compressed air