HOOD GP-ENGINE 2622286 - Caterpillar

Failure to replace the engine's water temperature regulator on a regularly scheduled basis could cause severe engine damage.
The water temperature regulators may be reused if the water temperature regulators are within test specifications, are not damaged, and do not have excessive buildup of deposits.
Since Caterpillar engines incorporate a shunt design cooling system, it is mandatory to always operate the engine with a water temperature regulator.Depending on load, failure to operate with a water temperature regulator could result in either an overheating or an overcooling condition.
If the water temperature regulator is installed incorrectly, it will cause the engine to overheat.
Replace the water temperature regulator on a regular basis. Regular replacement of the temperature regulator will reduce the chance of down time due to problems with the cooling system.The water temperature regulator should be replaced after the cooling system has been cleaned. Replace the water temperature regulator while the cooling system level is below the housing assembly.
Loosen the hose clamp and remove the hose from the elbow. Disconnect the hose assembly from the water temperature regulator housing.
Remove the bolts from the elbow. Remove the elbow and the water temperature regulator housing.
Remove the gasket, the water temperature regulator, and the seal from the water temperature regulator housing.
Install a new seal in the water temperature regulator housing. Install a new water temperature regulator and a new gasket. Install the water temperature regulator housing on the engine cylinder head.
Install the elbow and the hose. Tighten the hose clamp.