CYLINDER 1C4290 - Caterpillar

At operating temperature, the engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot water or steam. Any contact can cause severe burns. Look at the sight gauge to check the coolant level. The coolant level should be in the green range. If necessary, remove the fill cap only after the engine has been stopped and the cap is cool enough to remove with your bare hand. Remove the cooling system fill cap slowly to relieve pressure. Cooling system condition contains alkali that can cause personal injury. Avoid contact with the skin and eyes and do not drink. Allow cooling system components to cool before draining.
Put identification on all lines, hoses, wires and tubes for installation purposes. Cap and plug all lines, hoses and tubes to prevent foreign material from entering the system. Drain all fluids in a suitable container for storage or disposal.Start By:a. remove right engine guard 1. Drain engine coolant to a level below the water temperature regulator.2. Loosen clamp (1) and remove hose (2) from the pipe. 3. Remove bolts (4), pipe (3) and the gasket from regulator housing (5). 4. Remove temperature regulator (6) from regulator housing (5). Install the water temperature regulator in the reverse order.5. Clean all mating surfaces. Replace the gasket if necessary. Refer to the Operation & Maintenance Manual for all fluid capacities and the proper filling procedures.End By:a. install right engine guard