FUEL SYSTEM - N.6Fig. N.9.Timing Marks on Fuel Pump Flange and Timing Case.7.Remove the three nuts, spring washers andplain washers from the fuel pump securingstuds. Withdraw the fuel pump from the timingcase ensuring that when the fuel pump gearleaves the fuel pump shaft it stays in mesh withthe idler gear otherwise the fuel pump timing willbe affected.To Refit the Fuel Pump1.Offer up the fuel pump together with a new jointensuring that the slot in the pump hub is alignedwith the dowel in the fuel pump gear.2.Position the pump so that the scribed line on thepump flange and the mark on the timing caseare in alignment (see Fig. N.9). To checkaccuracy of scribed line on rear of timing case,this may be ascertained in accordance with theinstructions for marking a new timing case asgiven on Page K.4. Fit the plain washers, springwashers and secure the pump to the timing casewith the three nuts.3.Secure the pump driving gear and tachometerdrive adaptor to the fuel pump shaft with thethree setscrews and spring washers, ensuringthe dowel is properly located in its slot.4.Using a new joint fit the fuel pump gear coverplate complete with tachometer drive assembly.5.Refit the heat exchanger mounting bracket andsecure with the setscrews and nuts.6.Refit the low pressure pipes to the fuel pumpinlet and outlet connections.7.Refit the high pressure injection pipes betweenthe atomisers and fuel pump.8.Re-connect the throttle and stop lever controlsand securely attach their respective returnsprings in position.9.Vent the air from the fuel system as detailed onPage N.14.10.Adjust the maximum speed and idling speed asdetailed on Page N.8.11.If the fuel pump timing is suspected of beinginaccurate it should be checked and reset asfollows:—To Check Marking Angle of Fuel Injection Pumpusing Tool MS67B1.Release screw (5, Fig. N.10) and positionsplined shaft with the small splined diameter tothe rear to locate in the fuel pump drive shaft.2.Ensure that the slotted pointer (2) is positionedwith slot to rear of tool and chamfered sides ofslot outwards. At this stage, slotted end ofpointer should be kept well back towards thebody of tool. Ensure that the flat in the washerfitted behind the pointer locating screw (3) islocated over the side of pointer.3.Release bracket screw (4) and set bracket sothat the chamfered edge is in line with therelevant marking angle (see Page B.11).4.Position timing tool, locating splined shaft in huband slide tool towards pump to rest on end ofhub and lock shaft in tool.Fig. N.10.Fuel Pump Timing Tool MS67B.
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