ALTROZ SERVICE MANUAL

1.2L REVOTRON ENGINE 56 4. Turn on the air supply and Press the knob, allow the vacuum level to reach approximately 20-25 in Hg (50-60 cm Hg) and release the knob (The gauge reading may be slightly less in higher elevations but a proper vacuum should still be reached within 3 minutes). Let the system hold for 20 seconds to observe for a drop in vacuum. CAUTION  A drop in the gauge reading within 20 seconds indicates a vacuum leak in the system, which will require locating and rectifying the leakage before proceeding further. NOTE  During this procedure the radiator hoses will collapse under the vacuum being generated - this is normal. 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.