ENGINE AR- 3326562 - 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 filler cap slowly to relieve pressure only when engine is stopped and radiator 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 Conditioner contains alkali. Avoid contact with skin and eyes.
Replace the cooling system water temperature regulator on a regular basis in order to reduce the chance of unscheduled downtime and of 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 is completely drained or while the cooling system coolant is drained to a level that is below the water temperature regulator housing assembly.
Failure to replace the engine's water temperature regulator on a regularly scheduled basis could cause severe engine damage.
Note: If you are only replacing the water temperature regulator, drain the cooling system coolant to a level that is below the water temperature regulator housing assembly.
Loosen the hose clamp and remove the hose from the water temperature regulator housing.
Remove the bolts from the water temperature regulator housing and remove the water temperature regulator housing.
Remove the gasket and remove the water temperature regulator from the water temperature regulator housing.
Former water temperature regulators may be used, if they meet test specifications and are not damaged or have excessive buildup or 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.
Install a new water temperature regulator and a new gasket. Install the water temperature regulator housing.
Install the water temperature regulator housing and the hose. Tighten the hose clamp.
Add the cooling system coolant. Maintain the coolant level within 13 mm (.5 inch) of the bottom of the filler tube.