C3.3 Industrial Engine Caterpillar

Water Temperature Regulator - Remove and Install

Usage:

C3.3 E3K

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Dispose of all fluids according to local regulations and mandates.

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.
Loosen the hose clamps from the upper radiator hose and disconnect the upper radiator hose from water temperature regulator housing (2).
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Illustration 1 g01343959

Typical example
Remove bolts (1) from water temperature regulator housing (2).
Remove water temperature regulator housing (2) from the cylinder head.
Note: Note the orientation of the water temperature regulator housing.
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Illustration 2 g01430625

Typical example
Remove O-ring seal (3) (not shown) from water temperature regulator housing (2).

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

Ensure that all components of water temperature regulator are clean and free of wear or damage. Check the water temperature regulator for correct operation. Refer to Systems Operation, Testing and Adjusting, "Water Temperature Regulator - Test" for the procedure to test the water temperature regulator. If any components of the water temperature regulator are worn or damaged, the complete assembly must be replaced.
The bore in the cylinder head for the water temperature regulator should be clean and free from damage.
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Illustration 3 g01343960

Typical example
If the original water temperature regulator housing is installed, position a new O-ring seal (3) into the groove in water temperature regulator housing (2).
A new water temperature regulator housing is supplied with a new O-ring seal.
Use Tooling (A) to lubricate the new O-ring seal.
Install water temperature regulator housing (2) to the cylinder head.
Note: Ensure the correct orientation of the water temperature regulator housing.
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Illustration 4 g01343959

Typical example
Install bolts (1). Tighten the bolts to a torque of 22 N·m (16 lb ft).
Connect the upper radiator hose and tighten the hose clamps.
Fill the cooling system to the correct level. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change" for the correct procedure.