FUEL SYSTEM 10 C. LOW PRESSURE CNG FILTER: Function: This is Coalescing Low Pressure filter, located in between CNG Gas rail & Pressure regulator. This unit filters oil, dust and cylinder corrosion from the Low pressure CNG to protect the CNG injectors. It can work within the temperature range of - 40°C to 150°C with filtration capacity of 10 microns. The maximum rated operating pressure that L.P.filter can withstand is 10.3 bar. Mounting Location: The L.P. filter is mounted below rear floor, near timing cover of Engine. CONSTRUCTIONAL DETAILS: REMOVAL & REFITMENT OF L.P FILTER (On vehicle): NOTE: Park the vehicle with brakes ON and duel selector switch is kept in CNG mode. Manually turn of the tank valve and connect the TML tester tool and start the service “Empty CNG lines” Crank the engine and run in idle condition until engine stop at its own. Re crank the engine it should not start (tank pressure should be 0 bar) WARNING : Do not turn OFF Cylinder Valves , in vehicle running in CNG mode. This may wrongly detect the leakage error.. Disconnect battery negative cable.
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