PISTON (Reference) 615004B001 - Caterpillar

Illustration 1 g00947815
(A) "FULL" level
(B) "LOW" level
Check the coolant level of the coolant reservoir. Maintain the coolant level between the "FULL" mark and the "LOW" mark. If the coolant reservoir is empty, follow Steps 2.a through 2.i.
Illustration 2 g00947827
Open the access door to the cooling system pressure cap.
Slowly loosen the cooling system pressure cap in order to relieve system pressure. Remove the pressure cap. Note: Refer to Operation and Maintenance Manual, "General Hazard Information" for information on containing fluid spillage.
Add the appropriate coolant solution to the cooling system. Refer to the following topics:
Special Publication, SENR6250, "Cooling System Specifications"
Operation and Maintenance Manual, "Capacities (Refill)"
Start the engine. Operate the engine without the cooling system pressure cap until the water temperature regulator opens and the coolant level stabilizes.
Maintain the coolant level within 13 mm (0.5 inch) of the bottom of the filler pipe.
Inspect the condition of the gasket on the pressure cap. If the gasket is damaged, replace the pressure cap.
Install the cooling system pressure cap.
Stop the engine.
Close the access door to the cooling system pressure cap. Note: Refer to Operation and Maintenance Manual, "General Hazard Information" for information on containing fluid spillage.
If additional coolant is necessary, remove the cooling system pressure cap and add the appropriate coolant solution.
Install the cooling system pressure cap.
Close the access door to the cooling system pressure cap.