NANO

FUEL SYSTEM 6 Technical specifications of Cylinder valve: Maximum working pressure: 260 bar Working temperature: - 40 to 85 deg.cen Solenoid valve voltage: 12V DC Nominal power rating of solenoid valve: 10W Working Principle of Solenoid valve / coil: The Tank solenoid valve is an integrated on the CNG tank unit and turns ON/OFF the CNG output from the tank. The valve is “normally closed” and is controlled by the ECU to control the high pressure gas output from the tank. System Integration: Tank solenoid Valve has an electrical interface with the ECU and the ‘Change over Switch’ (COS). The tank solenoid (shut-off) valve is controlled by the ECU. Stand Alone Diagnosis:  Use Multimeter: Coil resistance @ 20°C= 9.7 ± 0.3k Ω .  Use TATA Diagnostic Tool, perform actuator test. Sensor end Pin assignment (on connector): 1: -ve (12V Supply from power relay) 2: +ve (ECU pin) 1 2 CAUTION: The Information given above is just for reference only and the repair or service of the above component should be done at Authorized CNG service stations only. WIRING DETAILS (ECU & SOLENOID COIL) REMOVAL OF CYLINDER VALVE FROM CNG CYLINDER: (On-bench process)  Do not remove CNG cylinder valve unless CNG cylinder is empty.  Hold the cylinder in a suitable fixture.  Remove the cylinder valve from the cylinder using a torque wrench & tightening tool (Part No: 5402 5890 47 01). REFITMENT OF CYLINDER VALVE ON CNG CYLINDER:  Remove the thread protection cap from the “cylinder valve” (for new assembly).  Remove the thread protection cap from the “cylinder neck” (for new assembly) and ensure that the threads are free from burrs and any irregularities.  Remove the rubber gasket from the valve thread (for new assembly). NOTE: Follow the guidelines for NPT threading for assembly.