VALVE GP-SOLENOID 3668955 - Caterpillar

Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure.
Mixing ELC with other products reduces the effectiveness of the coolant and shortens coolant life. Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specification for pre-mixed or concentrate coolants. Use only Caterpillar Extender with Caterpillar ELC.Failure to follow these recommendations can result in shortened cooling system component life.
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.
Reference: For information about adding Extender to your cooling system, refer to Operation and Maintenance Manual, "Cooling System Coolant Extender (ELC) - Add" or consult your Caterpillar dealer.If an Extended Life Coolant was previously used, flush the cooling system with clean water. No other cleaning agents are required. Use the following procedure to change the Extended Life Coolant.
Illustration 1 g00285598
The cooling system pressure cap is located under the engine hood at the rear of the machine.
Illustration 2 g00285599
Slowly loosen the cooling system pressure cap in order to relieve any system pressure.
Illustration 3 g00285620
Open the access door on the left side of the machine in order to access the coolant drain valve. Open the drain valve at the bottom of the radiator. Allow the coolant to drain into a suitable container.
Flush the cooling system with clean water until the draining water is clean. Close the drain valve.
Replace the water temperature regulator.Reference: Refer to Operation and Maintenance Manual, "Cooling System Water Temperature Regulator - Replace" for the correct procedure.
Add the Extended Life Coolant.Reference: Refer to Operation and Maintenance Manual, "Refill Capacities" for the capacity of the cooling system.
Start the engine. Run the engine without the cooling system pressure cap until the water temperature regulator opens and the coolant level stabilizes.
Illustration 4 g00282345
Maintain the coolant level in the sight gauge on the upper radiator hose.
Install the cooling system pressure cap. Stop the engine.