ENGINE 131 G. FUEL FILLER CAP The fuel filler cap used ARIA is a dual vented fuel filler cap. In addition to its function of providing an opening to fill fuel to the fuel tank it also helps in maintaining pressure in the fuel tank. It has a dual pressure valve that functions as follows: 1. When the pressure in the fuel tank increases beyond the specified limit of 10.5 KPa ~ 13.3 KPa it opens to release the vapour to the outside to relieve the pressure. 2. If a vacuum pressure of -6.0kPa is created in the tank, it opens up such that outside air is allowed in to bring back the pressure to safe limits. In addition a ratchet tightening device ensures that the filler cap is tightened to the correct torque. It also fitted with a O-ring that has to inspected regularly and replaced if it has hardened, broken or cracked. H. TANK UNIT 1. Fuel Supply connector 2. Fuel Return connector 3. To Tank Pressure Valve 4. Fuel Level Sensor 5. Float 6. Electrical Connector 7. Roll over Valve PIN OUT PIN NO DESCRIPTION A and D Not Connected B Sensor Ground C Fuel level sensor out
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