1.2L REVOTRON TWIN CYLINDER CNG ENGINE 131 REGULATOR REMOVAL NOTE The CNG Pressure Regulator is not a serviceable part. 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. 1. Close the CNG shutoff valve at the cylinder. Start the vehicle and keep running to empty the CNG fuel from the system. 2. Disconnect battery negative cable. 3. Disconnect electrical connection to the regulator. 4. Disconnect the gas HP pipe. CAUTION There may be residual pressure in the high pressure line which could get relieved during this operation. 5. Relieve the radiator coolant pressure by slowly opening the radiator cap. 6. Disconnect hoses to the regulator. NOTE Plug the hoses suitably to avoid contamination from dust. 7. Remove the mounting bolts and take out the regulator. NOTE In-case of clamp removed on CNG LP hose between regulator & Filter, also replace LP hose connecting regulator & Filter. FITMENT For fitment follow removal procedure in reverse. Conduct leak detection test after. Top up the Coolant and do de-aeration.
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