SCREEN 4258619 - Caterpillar

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 cooling system pressure cap slowly to relieve pressure only when engine is stopped and cooling system pressure cap is cool enough to touch with your bare hand.Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.
Open the upper engine access door.
Illustration 1 g06012446
Remove the cooling system pressure cap (1) slowly to relieve pressure.
Inspect the cooling system pressure cap for foreign material, for deposits, and for damage. Clean the cooling system pressure cap with a clean cloth. If the cooling system pressure cap is damaged, replace the cooling system pressure cap.
Install the cooling system pressure cap. When you install the cooling system pressure cap, make sure that the fluid level is to the top of the radiator. If there is air in the system, the expansion tank will not operate properly.
Close the upper engine access door.