12 4 PL FUEL SYSTEM FUEL FILTER : The fuel filter is locatedunder the body near the fuel tank along the pipe carrying the fuel to fuel rail as shown Fig 14, It is made up of an outer case and an integral mount that holds a filter element with high filtering capacity. It filters the fuel beingdeliver under pressure by the fuel pump.This is essential for ensuring fuel injection operation since the injector is extremely sensitive to foreign particles in the supply circuit. Since it cannot be disassembled, it must be replaced as an assembly at the recommended intervals. Inspection : 1. Check fuel filter as per following procedure. a) Release the fuel system pressure as mentioned above for ‘Removal of tank’ b) Disconnect negative battery terminal. c) Jack up the vehicle / hoist the vehicle. d) Install pressuregaugehaving a rangeof 0-10bar at the delivery port of T connector. e) Connect negative battery terminal. f ) Connect fuel pump connectors. g) Turn ignition switch‘ON’ - run engine idle. h) Measure fuel pressure on gauge it should be 3.5 bar. ● If it is not, replace filter and retest. ● If it is OK assemble fuel filter. Removal : 1. Ref. Procedure as mentioned above from (a) to (c). 2. Place fuel container under fuel filter. 3. Disconnect inlet and outlet fuel lines fromfuel filter. Collect fuel emerging during the operation in suitable container. Caution : A small amount of fuel may be released after fuel hose is disconnected.Toavoid the chanceof accident,cover hose and pipe disconnectedwith a shop cloth. Assembly : 1. Assemble filter.The arrowstampedon theouter case of the filter indicates the fuel flow direction. 2. Tighten the filter clamping screws to tightening torque 0.8 - 1.0 kgm. 3. Connect inlet hose, outlet hose to filter. Ensure that quick fix couplings are fitted properly. 4. Connect negative battery terminal. 5. With engine‘OFF’condition and ignition switch‘ON’ check for fuel leakage. 6. Start engine and check each joint of exhaust system for leakage. Rectify if necessary. Fig. 14
RkJQdWJsaXNoZXIy MTIwNTUz