Cooling System Draining, Filling and Bleeding
Cooling System Draining, Filling and Bleeding
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.
CAUTION: Engine coolant will damage the paint finished surfaces. If spilt, immediately remove the coolant and clean the area with water.
CAUTION: Never remove the coolant expansion tank cap under any circumstances while the engine is operating. Failure to follow this instruction may result in damage to the engine.
1 Carry out the procedure up to step 7 in the filling section three times, filling the cooling system with clean water after the first two drains. At the third refill, use the equation in step 8 of the filling section to calculate the volume of coolant required to return the system to a 50% mix.
WARNING: Make sure to support the vehicle with axle stands.
2 Raise and support the vehicle.
For additional information, refer to Engine Undershield Engine Undershield
3 Position a container to collect the fluid.
4 Attach a hose to the radiator drain tap. Open the tap.
5 Tighten the radiator drain tap.
6 Remove the container.
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.
CAUTION: Engine coolant will damage the paint finished surfaces. If spilt, immediately remove the coolant and clean the area with water.
CAUTION: Never remove the coolant expansion tank cap under any circumstances while the engine is operating. Failure to follow this instruction may result in damage to the engine.
For additional information, refer to Engine Undershield Engine Undershield
1 Lower the vehicle.
2 Fill the cooling system to the upper level mark of the expansion tank.
3 Install the coolant expansion tank cap.
CAUTION: Make sure the coolant level remains above the "MIN" level mark.
4 Hold the engine speed at 2000 rpm until warm air is expelled from the heater.
5 Switch the engine off and allow to cool.
NOTE:
This step is for calculating the coolant concentration in the cooling system.
Key to letters:
- C = Initial concentration
- T = Total volume
- S = Service drain volume
- R = Remaining volume = T-S
- P = System concentration
Formula:
- P = RC/(S+R)
NOTE:
This step is for calculating the volume of coolant required to return the cooling system to a 50% mix.
Key to letters:
- C = Initial concentration
- T = Total volume
- S = Service drain volume
- P = System concentration
- V = Volume of Coolant Required
Formula:
- V = T/2-P(T-S)/100
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.
6 Check and top-up the coolant if required.
7 Visually check the engine and cooling system for signs of coolant leakage.