AIR CLEANERS AND FUEL SYSTEM-N.7 6. Fit timing tool to engine in fuel pump position ensuring firstly that splined shaft with master spline is fully located in pump drive shaft and then that register of tool is seated in fuel pump locating aperture (see Fig. N.13). Lock splined shaft in tool. If pointer is 180" from timing mark, engine is pro- bably on wrong stroke in wh ich case, remove tool and set engine on correct stroke. To check Marking Angle of Fuel Injection Pump 1. Release screw (5, Fig. N.12) and remove splined shaft (6). 2. Ensure that slotted pointer (2) is positioned with slot to rear of tool and chamfered side of slot out- wards.
At this stage, slotted end of pointer should be kept well back towards body of \001. Ensure that flat in washer fitted behind pointer securing screw (3) is located over side of pointer. 7. Slide slotted pointer forward so that slot is half way over mounting flange. ~ 3. Connect NO.1 outlet of r:;ump body to an atomiser test rig and pump up to a maximum pressure of 30 atm (31 kgflcm2) or 440 Ibflin 2 4. Release bracket screw (4) and set bracket so that chamfered edge is in line with relevant marking angle as given on Page B.12. - 5. Position timing tool on pump drive shaft with master splines engaged and tool locating on spigot (see Fig. N.15). N13 8.
Turn timing tool by hand in opposite direction to pump rotation (shown on pump nameplate) to take up backlash and check that timing mark on mount- ing flange is central in slot of pointer (see Fig. N.14) . 9. If timing mark is not central, position of fuel pump drive gear should be altered as detailed on Page J.3 so that the mark is central in slot with backlash taken up. 10. When engine timing is correct, remove tool. 11. Refit fuel pump in engine with timing marks in line. 6. Turn pump in normal direction of rotation as shown on nameplate until pump locks. 7.
In this position, slide pointer forward until it is halfway over pump flange and check that tool timing mark is central to slot in pointer. Alternative Method where No Tool is Available A further check is possible and utilises the internal timing marks within the pump body. To be able to see these marks necessitates the removal of the inspection cover. On the fuel pump rotor inside the fuel pump are a number of scribed lines. each one bearing an indi- vidual letter. A timing circlip, one end of which has a straight edge is --positioned inside the pump body and has to be preset so that when the appropriate scribed line on the fuel pump rotor aligns with the straight end N14