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ENGINE 15 REMOVAL AND REFITMENT OF P & T SENSOR REMOVAL 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 the battery negative cable.  Disconnect the electrical connection P&T sensor.  Carefully remove the sensor using a suitable spanner. REFITMENT:  Carefully assemble the sensor on gas rail. NOTE: While fitment, apply torque only by holding the sensor at the Hexagon area.  Fit back the sensor electrical connection.  Connect the battery negative cable.  Conduct leak detection test after the fitment of P & T sensor on gas rail.