ALTROZ SERVICE MANUAL

1.2L REVOTRON ENGINE 57 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. 4. Initial coolant filling through pressure cap opening.  Opening EGR hose and top hose of heater core.  Filling coolant through pressure cap opening till coolant is visible in the EGR hose. Refit EGR hose.  Keep filling coolant till coolant is visible in the heater hose. Refit the heater hose.  Fill the no loss tank till the max level. 5. Start the engine and maintain engine 3000 rpm.  Close the pressure cap & start the engine in idle condition for a few seconds. Rev up & maintain engine speed at 3000±100 rpm.  Radiator fan switch ‘ON’ for the first time once coolant temperature reaches the fan trigger threshold.  Continue the de-aeration process until completion of two heat cool cycles of radiator fan (i.e. Radiator fan turns ‘ON’ & ‘OFF’ for two times).  Allow engine to cool down until coolant temperature reaches ambient temperature. 6. Fill coolant after vehicle cool down.  After cool down, observe drop in coolant level in no loss tank & if required fill coolant until max mark.  Also open pressure cap & fill coolant till the neck is full if required.  De-aeration process is now complete.