C4.4 Engines for Caterpillar Built Machines Caterpillar

Specifications

Removal Procedure

1. Drain the coolant from the cooling system to a level below the water temperature regulator, into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change" for the correct draining procedure.

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Illustration 1	g02524799

2. Loosen the hose clamps from the upper radiator hose and disconnect the upper radiator hose from water temperature regulator housing (1) .

3. Remove bolts (2) from water temperature regulator housing (1) .

4. Remove water temperature regulator housing (1) from the cylinder head.

   Note: Note the orientation of the water temperature regulator housing.

Installation Procedure

1. Ensure that all components of water temperature regulator housing (2) are clean and free of wear and damage. Check the water temperature regulator for correct operation. Refer to System Operation, Testing and Adjusting, "Water Temperature Regulator - Test" for the correct procedure to test the water temperature regulator. If any components of the water temperature regulator housing are worn or damaged, the complete assembly must be replaced.

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Illustration 2	g02524799
Typical example

2. If the original water temperature regulator (1) is to be installed. Ensure that the seal is not damaged and is correctly positioned in water temperature regulator housing (2) .

3. Install water temperature regulator housing (1) to the cylinder head.

   Note: Ensure the correct orientation of the water temperature regulator housing.

4. Install bolts (2). Tighten the bolts to a torque of 22 N·m (195 lb in).

5. Connect the upper radiator hose and tighten the hose clamps.

6. Fill the cooling system to the correct level. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Check" and Operation and Maintenance Manual, "Cooling System Coolant - Change" for the correct filling procedure.