Removal Procedure
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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 cooling system pressure cap slowly to relieve pressure only when engine is stopped and cooling system pressure 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 Coolant Additive contains alkali. Avoid contact with skin and eyes. |
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| NOTICE |
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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. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
Note: Put identification marks on all hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.
- Drain the coolant from the cooling system. Refer to Operation and Maintenance Manual, "Cooling System Extended Life Coolant - Change".
- Disconnect hoses (1) from water temperature regulator housing (2) .
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| Illustration 1 | g01092236 |
- Disconnect hose (3) .
- Loosen hose clamp (8) .
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| Illustration 2 | g01092241 |
- Remove bolts (7) in order to remove water temperature regulator housing (2) and gasket (4) from the engine.
- Separate water temperature regulator (5) and lip seal (6) from water temperature regulator housing (2) .
Installation Procedure
| NOTICE |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
| 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. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the components, if necessary.
- Install water temperature regulator (5) and lip seal (6) to water temperature regulator housing (2) .
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| Illustration 3 | g01092241 |
- Position water temperature regulator housing (2) and gasket (4) to the engine. Install bolts (7) .
- Tighten hose clamp (8) .
- Connect hose (3) .
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| Illustration 4 | g01092236 |
- Connect hoses (1) to water temperature regulator housing (2) .
- Fill the cooling system coolant. Refer to Operation and Maintenance Manual, "Capacities - Refill". Refer to Operation and Maintenance Manual, "Cooling System Level - Check".