1.2L REVOTRON TWIN CYLINDER CNG ENGINE 128 4. Remove the air filter. (Refer “Air Filter removal” for procedure). 5. Carefully disconnect the rubber hoses connected at filter’s inlet & outlet ports to remove/replace the filter 6. Remove mounting fasteners and separate out the LP filter from its mounting bracket NOTE In-case of clamps removed on CNG LP hoses, even both CNG LP hoses to be replaced along with filter. FITMENT For fitment follow removal procedure in reverse. On filter, “IN” and “OUT” indications are provided along with poka-yoke arrangement on filter and bracket. Ensure that the inlet is connected to the regulator side and out to the CNG rail side. Do NOT interchange. CAUTION Conduct leak detection test after the fitment of LP filter on vehicle. FILLING RECEPTACLE REMOVAL (FOR TIAGO) 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. 1. Close the CNG shutoff valve at the cylinder. Start the vehicle and keep running to empty the CNG fuel from the system. 2. Loosen the HP line’s nut at receptacle end joint and disengage the HP pipe from Receptacle. 3. Open the fuel flap and remove mounting bolts to the receptacle.
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