Renault Clio: Cooling system: Draining - Refilling

Renault Clio III (2005-2013) Service Manual / Engine And Peripherals / Cooling / Cooling system: Draining - Refilling

IMPORTANT

The circuits are designed to be pressurised, so be careful at high temperatures (risk of serious burns).

Do not open the bleed screw(s) with the engine running.

WARNING

Before the operation, protect the electrical accessories to prevent any risk of short circuiting and protect the belts to avoid damaging them.

DRAINING

• Position the vehicle on a two-post lift (see Vehicle: Towing and lifting) (MR 392, 02A, Lifting equipment).
• Remove:
  • the expansion bottle cap,
  • the engine undertray.
• Position the coolant recovery tray under the vehicle.
• Remove the cooling radiator bottom hose clip using the (Mot. 1202-01) or (Mot. 1202-02) or (Mot.1448).
• Open the cooling system by disconnecting the bottom hose from the cooling radiator.
• Use a compressed air nozzle to blow air into the system through the expansion bottle opening to remove as much coolant as possible.

CLEANING

• Fill the cooling system with water through the expansion bottle.
• Let the water run until the water collected from the cooling radiator bottom hose becomes clear.
• Use a compressed air nozzle to blow air into the circuit through the expansion bottle opening to remove as much water as possible.
• Refit:
  • the cooling radiator bottom hose,
  • the cooling radiator bottom hose clip with the (Mot.1202-01) or (Mot. 1202-02) or (Mot. 1448).

FILLING

Note:

There are two procedures for filling the cooling system:

• the procedure using the (Mot. 1700) recommended by Renault which saves a considerable amount of time as the cooling system bleed screws do not need to be opened,
• the procedure without a special tool.

I - FILLING PROCEDURE USING THE TOOL (MOT.1700)

• Fill the cooling system with engine coolant recommended by the manufacturer (see Vehicle: Parts and consumables for the repair) (MR 392, 04B, Consumables - Products) using the (Mot. 1700) (see ) (Technical Note 3857A, 19A, Cooling).

II - FILLING PROCEDURE WITHOUT A SPECIAL TOOL

WARNING

It is essential to open all of the bleed screws to remove as much as air as possible in the cooling system. Failure to perform this procedure may prevent the cooling system from filling properly and may damage the engine.

Location of the bleed screw on the K9K water chamber

Location of the bleed screw on the D4F, K4J, K4M water chamber

Location of the bleed screw on the D4F, K4M, K4J, K9K heater radiator hose

• Open the bleed screws (1).
• Fill the cooling system with the engine coolant recommended by the manufacturer (see Vehicle: Parts and consumables for the repair) (MR 392, 04B, Consumables - Products) via the expansion bottle until it overflows.
• Close all the bleed screws as soon as the coolant starts to flow in a continuous stream.
• Pressurise the system using the (Ms. 554-07) to check that there are no leaks (see 19A, Cooling, Engine cooling system: Check, 19A-5).
• Refit the expansion bottle cap.
• Clean any surfaces soiled by the coolant.

BLEEDING

WARNING

Do not open the bleed screw whilst the engine is running; this would damage the engine.

• Start the engine.

D4F, and 740 or 742 or 764

• Maintain the engine speed at 2500 rpm, using the pedal press for 5 minutes.
• Stabilise the engine speed at 2000 rpm until the fan assembly has been activated twice.

D4F, and 784

• Maintain the engine speed at 2500 rpm, using the pedal press for 5 minutes
• Stabilise the engine speed at 2000 rpm until the fan assembly is activated.
• Note the coolant level in the expansion bottle after this first activation.
• Accelerate at a minimum of 4000 rpm for a few seconds, until the coolant fluid level in the expansion bottle drops.

K9K

• Maintain the engine speed at 1500 rpm rapidly varying the engine speed (until maximum speed is reached) 2 to 3 times approximately every two minutes until the fan assembly starts for a second time.

F4R or K4J or K4M

• Run the engine at 2500 rpm, until the engine cooling fan has started to operate three times (time required for automatic degassing).

M4R

• Let the engine run at 3000 rpm, until the engine cooling fan has been activated three times (time required for automatic degassing).

• Check that the heating is operating correctly.
• Allow the engine to cool until the coolant temperature is less than 50

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