Cooling System Draining, Filling and Bleeding
Cooling System Draining, Filling and Bleeding
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.
WARNING: Be prepared to collect escaping fluid.
CAUTION: Since injury such as scalding could be caused by escaping steam or coolant, make sure the vehicle cooling system is cool prior to carrying out this procedure.
WARNING: Make sure to support the vehicle with axle stands.
1 Raise and support the vehicle.
For additional information, refer to Cowl Vent Screen Service and Repair
For additional information, refer to Air Deflector Service and Repair
CAUTION: Be prepared to collect escaping fluids.
CAUTION: Be prepared to collect escaping fluids.
2 Carry out the procedure from step 3 to 27 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 1 and 2 of the filling section to calculate the volume of coolant required to return the system to a 50% mix.
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
Torque to: 2 Nm
Torque to: 50 Nm
1 Lower the vehicle.
Raise the coolant expansion tank 50mm from its original position.
CAUTION: Make sure that the clip from the connector remains with the connector.
CAUTION: Be prepared to collect escaping fluids.
2 Fill the coolant expansion tank to the rim and continue until coolant is visible from the outlet.
3 Once coolant is visible from the outlet, connect the pipe.
NOTE:
This step may take approximately 10 minutes as the coolant level will drop slowly.
4 Continue to fill the coolant expansion tank to the rim until the coolant level stops dropping.
5 Install the coolant expansion tank.
WARNING: Be prepared to collect escaping fluid.
6 Check and top-up the coolant if required.
7 Set the heater controls to maximum.
8 Start the engine.
9 Continue to top-up with coolant with the engine at idle.
NOTE:
If no hot air is emitted from the centre registers after 2 minutes stop the engine for 10 seconds and return to the step 18.
10 Check to see if hot air is emitted at the centre registers.
11 Continue to fill the coolant expansion tank to the rim until the coolant level stops dropping.
12 Install the coolant expansion tank cap while the engine is at idle.
13 Switch the heater off.
14 Raise the engine speed to 2000 RPM for eight minutes.
CAUTION: Switch off the engine and allow the coolant temperature to go cold.
15 Switch the engine off.
Torque to: 23 Nm
16 Visually check the engine and cooling system for signs of coolant leakage.
WARNING: When releasing the cooling system pressure, cover the coolant expansion tank cap with a thick cloth.
CAUTION: Since injury such as scalding could be caused by escaping steam or coolant, make sure the vehicle cooling system is cool prior to carrying out this procedure.
CAUTION: Make sure the coolant level remains above the "COLD FILL RANGE" lower level mark.
NOTE:
When the cooling system is warm, the coolant will be approximately 10mm above the upper level mark on the expansion tank with the cap removed.
17 Check and top-up the coolant if required.
For additional information, refer to Cowl Vent Screen Service and Repair
For additional information, refer to Air Deflector Service and Repair