GLASS-ROOF 3762075 - Caterpillar

Failure to replace your water temperature regulator 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 water temperature regulator installed.If the water temperature regulator is installed incorrectly, the engine may overheat, causing cylinder head damage. Ensure that the new water temperature regulator is installed in the original position. Ensure that the water temperature regulator vent hole is open.Do not use liquid gasket material on the gasket or cylinder head surface.
Location of the Water Temperature Regulators
Illustration 1 g02939580
Typical example
Two or four water temperature regulators may be located in the water line on the left side of the engine.
Illustration 2 g02939581
Typical example
Two or four water temperature regulators may be located under the expansion tank on the top of the engine.
Replacement Procedure
Refer to two articles in the Disassembly and Assembly Manual, "Water Temperature Regulators - Remove and Water Temperature Regulators - Install" for the replacement procedure of the water temperature regulator, or consult your Cat dealer.