CYLINDER HEAD-E.g 4 10 E23 8. Replace the atomisers (Refer to Page N.l0) but do not tighten the securing nuts. 9. Replace the leak off pipe assembly and four high pressure fuel pipes to the atomisers. Tighten the atomiser securing nuts. NOTE: The correct tightening torque for high pres- sure fuel pipe nuts is 15 Ibf It (2,1 kgf m) or 20. Nm and for the atom iser securing nuts is 12 Ibf It (1,7 kgf m) or 16 Nm. 10. positions again to ensure that they are still to the correct toque. During this last check, do not loosen the nuts. Replace the rocker shaft as previously described and set the valve clearances to 0..0.12 in (0.,30. mm) COLD.
Start engine and check oil flow to rocker levers, if satisfactory refit cylinder head cover and air cleaner. Finally check for oil leaks and rectify immediately if any are visible. 1 D. Replace the fuel oil filter and the low pressure fuel pipes between filter and lift pump and filter and fuel pump. 11. Reconnect the electrical and fuel supplies to the starting aid. 12. Reconnect the exhaust pipe to the manifold. 13. Reconnect the water outlet connection at the front of the cylinder head. 14. Fill the cooling system with clean water ensuring the drain taps are turned off. Check for water leaks 15. Bleed the air from the fuel system as decribed on Page N.11. 16. Reconnect the battery.
It is important that the cylinder head nuts are re- tightened to the correct torque. in the correct sequence, after the engine has completed between 500/1000 miles (800/1600 kmJ or 25/50 hours. the Proceed as instructed on Page C.1, with the engine running at a fast idle check that the oil pressure is satisfactory and that the oil reaches the rocker assem- bly and oozes gently from the rocker levers at this speed. With the coolant outlet temperature higher than 170. 0 F (77 e C), tighten the cylinder head nuts in the order given in Fig. E23 and to the torque given on Page B.2. If a nut moves when checked, lighten it to the correct torque.
If a nut does not move before the correct torque is reached, loosen the nut by 1/12 to 1/6 (3D' to 60.') of a turn and then tighten to the correct torque. After all the nuts have been tightened, check the first E24