Cooling System Draining and Filling Cooling System

Notice: Two sealant pellets must be added to the radiator whenever the coolant system is drained and refilled with fresh coolant. Failure to use the correct sealant pellets may result in premature water pump leakage. Do not add pellets to the coolant recovery bottle since this may prevent the coolant system from operating properly.

Cooling System Draining and Filling Draining

Caution: To avoid being burned, do not remove the radiator cap while the engine is at normal operating temperature. The cooling system will relieve scalding fluid and steam under pressure if the cap is removed while the engine and radiator are still hot, causing serious injury.

1. Tilt the cab.

Refer to Cab Tilting in General Information.

2. Place a drain pan under the radiator drain cock.

Ensure that the capacity of the drain pan is at least 30 liters (32 quarts).

3. Ensure that the cooling system is cool.
4. Remove the radiator cap.
5. Open the drain cock. The drain cock is located at the bottom of the radiator. Allow the cooling system to drain until the coolant flow stops.
6. Open the following components:

•	The cylinder block

•	The accessory drain cocks

•

The plugs

•	Allow the engine block to drain until the coolant flow stops.

•	The radiator may drain more while the engine block drains.

7. Disconnect the coolant hose from the air compressor, if equipped.
8. Close the engine block drain plugs.
9. Close the radiator drain cock.

Cooling System Draining and Filling Filling

Do not use more than 70 percent antifreeze coolant solution or the coolant freeze point will begine to rise and the coolant will not be as effective. In order to avoid coolant loss, do not overfill the radiator.

1. Ensure that the radiator drain cock is closed.
2. Ensure that the engine drain plugs are tight.
3. Fill the cooling system with cooling solution.
4. Start the engine.
5. Run the engine for a few minutes in order to vent the air.
6. Add more coolant, if necessary.
7. Ensure that the engine is at normal operating temperature.
8. Fill coolant to the HOT LEVEL of the coolant recovery bottle, if equipped.
9. Fill the surge tank to the appropriate level.

The system should hold approximately 30 liters (32 quarts).

•	If the engine is cold, fill the surge tank to the sight glass,

•	If the engine is warm, fill the surge tank to the filler neck.

10. Run the engine in order to remove air from the system.
11. Fill coolant to the HOT LEVEL of the coolant recovery bottle, if equipped.
12. Ensure that the coolant is sufficiently cool.
13. Ensure that pressure is off the system.
14. Remove the radiator cap.
15. Install the radiator cap.
16. Lower the cab.