1.2L REVOTRON TWIN CYLINDER CNG ENGINE 55 5. Once the gauge has reached the desired vacuum level and there is no drop in gauge reading, turn the refill valve (red lever) on and the coolant will start to fill the cooling system. A system without a vacuum leak will fill in about 3 to 4 minutes. CAUTION If the refill tube end comes out of the coolant during the refill process, air will be pulled into the system and the entire procedure will need to be repeated. Kindly ensure to maintain sufficient amount of coolant in the container to avoid this issue. 6. Once the vacuum gauge reaches “0”, turn refill valve off (red lever), check the amount of coolant was added to system, if necessary top-up the coolant to the specified level and refit the pressure cap. 7. Start the engine and run until normal operating temperature is reached. Allow to cool and top-up coolant if necessary. NOTE If the amount of coolant specified for the vehicle was not added to the system, repeat the procedure from step 1. METHOD 2 1. Vehicle condition And Parking. Park the vehicle on flat level surface. Allow the vehicle to cool down to workable temperature (preferably to ambient temperature). Place ta clean tray just below the drain plug located at bottom of radiator. 2. Drain coolant from radiator. Open the pressure cap & drain plug and allow the coolant to drain out into the container. Blow in the pressurized air through pressure cap opening till all the coolant is drain out & close pressure cap. 3. Remove coolant from water pump, heater and cooling system hoses. Open the heater top hose & blow pressurized air in the heater top hose thermostat side (block the heater inlet part towards heater coil with the help of plug). Repeat same operation in reverse direction (heater inlet towards heater coil side air will be blown & thermostat side will be closed). Connect the heater top hose. Close the drain plug.
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