General Procedures: Draining

All vehicles

1. WARNING: Make sure to support the vehicle with axle stands.

   Raise and support the vehicle.

2. WARNING:

   • Release the cooling system pressure by slowly turning the coolant expansion tank cap a quarter of a turn. Cover the expansion tank cap with a thick cloth to prevent the possibility of scalding. Failure to follow this instruction may result in personal injury.
4. • Remove the retaining bolts.

   Vehicles with 5.0L or 3.0L petrol engine

5. CAUTION: Be prepared to collect escaping coolant.
   NOTE: Collect the coolant in a clean container and reuse.

6. Vehicles with 2.7L diesel engine

7. CAUTION: Be prepared to collect escaping coolant.

   Release the clip and disconnect the radiator lower coolant hose, allow the coolant to drain.

8. Connect and secure the radiator lower coolant hose.

   Vehicles with 3.0L diesel engine

9. CAUTION: Be prepared to collect escaping coolant.
   • Position a container to collect the fluid.
10. • Connect the transmission fluid cooler coolant hose.

    All vehicles

12. Torque Specifications: 10 Nm 

    FILLING 

    WARNING: Since injury such as scalding could be caused by escaping steam or coolant, do not remove the filler cap from the coolant expansion tank while the system is hot.
    CAUTION:

    • The engine cooling system must be maintained with the correct concentration and type of anti-freeze solution to prevent corrosion and frost damage. Failure to follow this instruction may result in damage to the engine.
13. Prepare a sufficient amount of coolant to the specified concentration.
14. • NOTE:

      • Make sure the coolant supply valve is in the closed position on the special tool.

    Special Tool(s):  HU-919

    1. Position the hose from the special tool into a container of clean coolant.
    2. Connect a regulated compressed air supply to the special tool.
    3. Move the special tool to the expansion tank.
15. NOTE:

    • Make sure the coolant supply valve is in the closed position on the special tool.

    Open the air supply valve until -0.8 (-12 psi) Bar is shown on the gauge.

    Special Tool(s):  HU-919

16. • Special Tool(s):  HU-919
    • Close the air supply valve.
    • Allow 1 minute to check the vacuum is held.
17. NOTE:

    • The coolant is to be reused.

    Open the coolant supply valve and allow the coolant to be drawn into the system.

    Special Tool(s):  HU-919

18. Remove the special tool.
19. Connect exhaust extraction hoses to the tail pipes.
20. Start and run the engine.
21. Install the coolant expansion tank cap.
22. Hold the engine speed at 2000 revolutions per minute (RPM) until warm air is expelled from the heater.
23. Switch the engine off and allow to cool.
24. Clean any spilled or excess coolant from the vehicle.
25. WARNING: Since injury such as scalding could be caused by escaping steam or coolant, allow the vehicle cooling system to cool prior to carrying out this procedure.

    Check and top-up the coolant if required.