Attention:
When working in the engine compartment, to avoid injury, it is necessary to take precautions, since the electric fan of the engine cooling system may turn on unexpectedly.
To avoid getting severe burns when the engine is hot, you must follow these rules:
- do not open the expansion tank cap,
- do not drain the fluid from the engine cooling system,
- do not open the lids to remove air.
Note: When performing work, be prepared for liquid leakage, so prepare a tray to collect the liquid and cover the surrounding components.
Attention:
- Do not use ordinary water for the engine cooling system. Normal engine operation is ensured only by using a coolant.
- If coolant is leaking through the expansion tank cap, the expansion tank cap vapor valve must be replaced.
Draining the coolant
1. Place the vehicle on a two-post lift.
2. Remove the cap from the expansion tank.
3. Loosen the mounting bolts and remove the engine protective pan.
4. Remove the front bumper from the car.
5. Place a coolant collection tray under the vehicle.
6. Remove the clamp of the lower radiator hose using special pliers (Mot. 1202-01), (Mot 1202-02) or (Mot. 1448).
7. Open the cooling system circuit by disconnecting the lower radiator hose using trim removal tools (Car 1363).
8. By supplying compressed air to the cooling system through the opening of the expansion tank, remove as much coolant as possible.
Cleaning the cooling system
1. Supply water to the cooling system through the expansion tank.
2. Wait until the water flowing out of the lower radiator hose is clear.
3. By supplying compressed air to the cooling system through the opening of the expansion tank, remove as much water as possible from the cooling system.
4. Connect the lower radiator hose.
Filling the cooling system
Note:
There are two ways to fill the engine cooling system:
Using the device (Mot. 1700) recommended by Renault, it provides a significant time saving as it does not require opening the plugs to remove air. A method without the use of a special device.
Refueling using a device (Mot. 1700)
[View the original on the specified resource: RENAULTBOOK]
Fill the engine cooling system with the fluid recommended by the manufacturer using the tool (Mot. 1700).
Filling without using a special device
Attention:
- Be sure to remove all drain bolts to remove as much air as possible from the cooling system.
- Failure to perform this operation may result in the cooling system not being completely filled and may cause engine damage.
1. Open all air bleed nipples.
2. Air bleed nipple for the version with the K9K engine.
3. Air bleed nipple, versions with K9K engine.
4. Air bleed nipple, versions with D4F engine.
5. Air bleed nipple, versions with D4F engine
8. Air bleed nipple, versions with K4M engine
2. Fill the engine cooling system with the liquid recommended by the manufacturer, pouring it into the expansion tank up to the top edge of the neck.
3. Close all the air bleed nipples as soon as the liquid starts to flow out in a continuous stream.
4. Create pressure in the system using a device (Ms. 554-07) to check for leaks.
5. Install the expansion tank cap.
6. Clean surfaces that have been exposed to coolant.
Caution: Do not open the air bleed nipple while the engine is running to avoid engine damage.
7. Start the engine.
Versions with petrol engines
8. Let the engine run at 2500 rpm until the electric fan of the engine cooling system turns on for the third time (time required for automatic air removal).
Diesel engine versions
9. Maintain the engine speed at 1500 rpm, sharply increasing the speed to maximum 2 - 3 times approximately every 2 minutes until the electric fan of the engine cooling system turns on for the second time.
10. Check the heater's functionality.
11. Allow the engine to cool down to a coolant temperature below 50°C.
12. Bring the coolant level up to the "Maximum" mark.
13. Install the expansion tank cap.
14. Remove the coolant collection pan from under the vehicle.
16. Install the engine oil pan guard.