INSTALLATION AR-ENGINE 2797825 - Caterpillar

Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure.
Failure to replace the engine's thermostat on a regularly scheduled basis could cause severe engine damage.
Caterpillar engines incorporate a shunt design cooling system and require operating the engine with a thermostat installed.If the thermostat is installed wrong, it will cause the engine to overheat. Inspect gaskets before assembly and replace if worn or damaged.
Illustration 1 g03034876
Water temperature regulator housing.
The water temperature regulator housing is located in the engine compartment on the left-hand side of the machine. Two water temperature regulators are located within the water temperature regulator housing on this machine.Replace the water temperature regulators in order to reduce the chance of problems with the cooling system.The water temperature regulators and the seals can be replaced while the cooling system is drained. The water temperature regulators can also be replaced while the coolant is drained to a level below the water temperature regulator housing.Note: If you are only replacing the water temperature regulators, drain the coolant to a level that is below the water temperature regulator housing.Reference: For the correct procedure for replacing the water temperature regulators, refer to the Disassembly and Assembly manual for the engine of this machine.