Replacing the coolant (Renault Espace III)

Draining the coolant

• Apart from replacing the coolant at the prescribed intervals, maintenance is limited to checking the coolant level in the expansion tank.
• Remove the cap from the expansion tank.
• Place a suitable container under the engine.

Fig. 2.77. Schematic diagram of the Z7X engine cooling system: 1 - Right interior heating radiator; 2 - left interior heating radiator; 3 - expansion tank; 4 - automatic transmission oil cooler; 5 - water pump; 6 - engine radiator; 7 - antifoam; 8 - air bleed plugs; 9 - thermostat

Fig. 2.78. Location of threaded plugs on both sides of the cylinder block for draining the coolant

• To drain the coolant from both sides of the cylinder block, unscrew the threaded plugs.
• Disconnect the hose from the lower radiator tank and drain the coolant.

Filling with coolant

• Screw the drain plugs with new gaskets into the cylinder block.
• Reconnect the radiator hose and secure with a clamp.
• Remove three screws to bleed air from the cooling system.
• Fill the expansion tank with coolant until coolant without air bubbles comes out of the air bleed screws.
• Tighten the air bleed screws and close the expansion tank cap.
• Make sure the coolant level is halfway up the expansion tank.
• Start the engine and warm it up for 15 minutes at fast idle until the radiator fan comes on.
• Check the coolant level, which should be at the "Maxi" mark.