FUEL SYSTEM 15 REMOVAL & REFITMENT OF PRESSURE REGULATOR (on vehicle): 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 terminal. Disconnect the electrical connections of solenoid valve and high pressure sensor. Disconnect the following connections from pressure regulator. A) Gas supply connection from cylinder. B) LP hose from regulator to LP filter C) Pressure Relief Valve (PRV) connection. Now carefully remove the pressure regulator mounting fasteners and take-out the unit from the vehicle. FITMENT OF PRESSURE REGULATOR (on vehicle): For fitment procedure, follow the reverse procedure of “Removal”. Conduct leak detection test after the fitment of pressure regulator on vehicle. NOTE: Follow the guidelines for NPT threading for assembly of NPT threading.
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