General Coolant drain
- Thread starter Poddw
- Start date
Currently reading:
General Coolant drain
Which year and engine? We're not fortune tellers...
Removal-and-Installation > 00 MAINTENANCE > 0010 NEW UNITS AND PLANNED MAINTENA... > 0010T VEHICLE FLUIDS > 0010T20 ENGINE COOLANT - CHANGE
- Position the vehicle on the lift.
Op. 7055B54 PROTECTION/GUARD UNDER ENGINE -R.R.
Procedure for draining the circuit
- With the engine cold, undo the engine coolant supply reservoir cap.
Do not remove the expansion tank cap when the engine is hot as there is a danger of scalding.
1. Connect a suitable pipe to the exhaust connector.
2. Loosen the band and disconnect the coolant outlet pipe from the radiator.
Collect the coolant in a suitable container.
1. Open the bleed valve at the back of the radiator on the right hand side.
Procedure for refilling the circuit
- Close the engine coolant drainage tap.
- Introduce the recommended engine coolant very slowly via the filler on the tank until it comes out of the bleed screw.
- Close the bleed valve as soon as the fluid comes out.
- Continue filling up until the MAX level on the tank is reached.
- Tighten the cap fully on the tank filler.
- Start the engine and let it idle for about 2 minutes.
- Remove the air from the circuit by carrying out periodic, gradual acceleration (every 30 seconds) until a speed of about 3000 rpm is reached. This operation should be carried out until the thermostat opens and the fan switches on and off at least three times.
- During this operation, keep the climate control system switched off to prevent the fan coming on not due to the heating of the coolant. If there is a noticeable drop in the level in the tank at this point, restore the idle speed and open the cap very carefully and top up the fluid to the MAX level; then close the cap fully and complete the removal of the air.
- Stop the engine and, after having let it cool down, check that the fluid level is by the MAX level on the tank.
- At the end of the above operations, make sure that the amount of fluid introduced into the system is at least equal to the amount collected during the draining stage.
Op. 7055B54 PROTECTION/GUARD UNDER ENGINE -R.R.
- Remove the car from the lift.
- Position the vehicle on the lift.
Op. 7055B54 PROTECTION/GUARD UNDER ENGINE -R.R.
Procedure for draining the circuit
- With the engine cold, undo the engine coolant supply reservoir cap.
Do not remove the expansion tank cap when the engine is hot as there is a danger of scalding.
1. Connect a suitable pipe to the exhaust connector.
2. Loosen the band and disconnect the coolant outlet pipe from the radiator.
Collect the coolant in a suitable container.
1. Open the bleed valve at the back of the radiator on the right hand side.
Procedure for refilling the circuit
- Close the engine coolant drainage tap.
- Introduce the recommended engine coolant very slowly via the filler on the tank until it comes out of the bleed screw.
- Close the bleed valve as soon as the fluid comes out.
- Continue filling up until the MAX level on the tank is reached.
- Tighten the cap fully on the tank filler.
- Start the engine and let it idle for about 2 minutes.
- Remove the air from the circuit by carrying out periodic, gradual acceleration (every 30 seconds) until a speed of about 3000 rpm is reached. This operation should be carried out until the thermostat opens and the fan switches on and off at least three times.
- During this operation, keep the climate control system switched off to prevent the fan coming on not due to the heating of the coolant. If there is a noticeable drop in the level in the tank at this point, restore the idle speed and open the cap very carefully and top up the fluid to the MAX level; then close the cap fully and complete the removal of the air.
- Stop the engine and, after having let it cool down, check that the fluid level is by the MAX level on the tank.
- At the end of the above operations, make sure that the amount of fluid introduced into the system is at least equal to the amount collected during the draining stage.
Op. 7055B54 PROTECTION/GUARD UNDER ENGINE -R.R.
- Remove the car from the lift.
