FUEL SYSTEM 13 D. PRESSURE GAUGE: Function: The function of pressure gauge is to indicate the pressure in high pressure system. It is very useful to check the pressure in CNG Cylinder before starting the repair work on CNG system. The pressure gauge is coupled to T-connector by a Special fitting. Mounting Location: It is mounted in the front bonnet, directly connected to high pressure line. REMOVAL & REFITMENT OF PRESSURE GAUGE (on vehicle): WARNING : Do not turn OFF Cylinder Valves, in vehicle running in CNG mode. This may wrongly detect the leakage error 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) Disconnect battery negative cable. Using a suitable tool / spanner carefully remove the pressure gauge. FITMENT OF PRESSURE GAUGE (on vehicle): For fitment procedure, follow the reverse procedure of “Removal”. Conduct leak detection test after the fitment of pressure gauge on vehicle. NOTE: Follow the guidelines for NPT threading for assembly..
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