TIMING CASE AND DRIVE-J.3 2. Refit the three securing setscrews, and tighten to a torque of 19-21 Ibf ft (2,6-2,9 kgf m). 3. Refit the idler gear and hub, timing case front cover, etc. To Fit New Fuel Pump Gear In the event of a new fuel pump gear being required, this will be supplied without timing marks and to ensure correct fitment of the gear and timing of the fuel injection pump, the following procedure should be adopted:- Using Special Tool MS67B (see Fig. N.12) 1. Turn crankshaft until Nos. 1 and 4 pistons are at T.D.C., No. 1 piston being on compression stroke. Remove fuel pump gear. Ensure that the timing marks on crankshaft gear, idler gear and camshaft coincide. Remove fuel pump.
Set special tool MS67B to the correct checking angle (see Page B.12). Fit special tool in place of fuel pump and line up the slotted pOinter with the timing mark on the fuel pump mounting flange. Fit the new fuel pump gear, holding gear against the direction of rotation to take up backlash. Tighten the retaining setscrews. Mark the new fuel pump gear with a scribed line to coincide with the scribed line on the fuel pump driving hub. Also stamp two dots on the new gear to coincide with the single dot on the idler gear (see Fig. K.1). 9. Check backlash of timing gears and adjust within the limits as detailed on Page J.2. 2. 3. 4. 5. 6. J5 7. 8.
Where the special tool is not available, the following method should be adopted. 1. Turn crankshaft until Nos. 1 and 4 pistons are at T.O.C., Nos. 1 piston being on compression stroke. 2. Remove fuel pump gear and idler gear. 3. Replace idler gear ensuring that timing marks on crankshaft gear, idler gear and camshaft gear coincide. 4. Turn crankshaft in opposite direction to normal direction for about a quarter of a revolution. Then turn in normal direction until No.1 piston is at its static timing point (see Page N.7). 5.
Remove fuel pump inspection plate (mechanically governed pumps) or plate embodying fuel return connection (hydraulically governed pumps) enabling the fuel pump rotor to be seen. 6. Then turn fuel pump driving hub until scribed line on the rotor marked "A" or "C" (for hydraulically governed and mechanically governed pumps res- pectively) coincides with the square end of the fuel pump timing circlip. 7. Ensuring timing gears and fuel pump shaft do not move, fit fuel injection pump gear and secure with three setscrews. 8. Turn crankshaft back slightly and then forward again to No. 1 piston on static timing point to check that fuel pump timing is correct. J6 To Remove the Fuel Pump Gear 1.
Remove the timing case front cover. 2. Remove the idler gear and hub. 3. Remove the three securing setscrews and ease the gear from its location on the fuel pump driving hub. 4. Examine the gear for signs of excessive wear, cracks, piting, etc. To Refit the Fuel Pump Gear 1. Refit the fuel pump gear so that the timing marks on the gear and hub respectively are in alignment as shown in Fig. J.7.