HOUSING- 2Y7255 - Caterpillar

Illustration 1 g00771827
The cooling system pressure cap (2) is located under the access door (1) at the top rear of the machine.
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.
Slowly loosen the cooling system pressure cap in order to relieve system pressure. Remove the cooling system pressure cap.
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.
Place the drain hose (4) into a suitable container. Open the drain valve (5) on the bottom of the radiator. Allow the coolant to drain into a suitable container.Note: The Landfill Compactor is equipped with bottom guards. The radiator guard needs to be lowered in order to access the drain valve.
Flush the cooling system with clean water until the draining water is clean. Close the drain valve.
Replace the water temperature regulator.Reference: For the correct procedure, refer to Operation and Maintenance Manual, "Cooling System Water Temperature Regulator - Replace".
Topping off or mixing Cat ELC with other products that do not meet Caterpillar EC-1 specifications reduces the effectiveness of the coolant and shortens coolant service life.Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specification for pre-mixed or concentrate coolants. Use only Extender with Cat ELC.Failure to follow these recommendations can result in shortened cooling system component life.
Add the Extended Life Coolant.Reference: For the refill capacity of the cooling system, refer to Operation and Maintenance Manual, "Capacities (Refill)".
Start the engine. Run the engine without the cooling system pressure cap until the water temperature regulator opens and the coolant level stabilizes.
Maintain the coolant level in the sight gauge (3) on the upper right side of the radiator tank. Open the left rear access door in order to access the sight gauge.
Install the cooling system pressure cap. Close the engine hood.