Perkins 4.99 - Cylinder Head Final Checks; Engine Checks After Head Refit; Cylinder Head Nut Retorquing

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.
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.
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.
CYLINDER HEAD-E.g
4
•
10
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.
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.
After all the nuts have been tightened, check the first E24