C7.1 Industrial Engine Water Temperature Regulator - Remove and Install Caterpillar

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	g01985853
   Typical example

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

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

4. Remove water temperature regulator housing (2) from the cylinder head.

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

Installation Procedure

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Illustration 2	g01985853
Typical example

1. Ensure that all components of water temperature regulator housing (2) are clean and free of wear and damage. If any components of the water temperature regulator housing are worn or damaged, the complete assembly must be replaced.

2. Check the water temperature regulator for correct operation. Refer to System Operation, Testing, and Adjusting, "Water Temperature Regulator - Test" for the procedure to test the water temperature regulator. If the water temperature regulator is no operating correctly, the complete assembly must be replaced.

3. Install water temperature regulator housing (2) to the cylinder head.

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

4. Install bolts (1). Tighten the bolts to a torque of 22 N·m (195 lb in).

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

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.