
20 LIGHT AND HEAVY VEHICLE TECHNOLOGY
nut is given a further specified amount of turn, per-
haps in two stages of a quarter-turn each. With the
setbolts equally tightened the paint spots will all be
facing in the same but of course new direction.
Whichever tightening procedure is used, the numeri-
cal sequence of tightening specified usually involves
starting from the centre and working alternately
towards each end.
Any retightening of the cylinder head after the engine
has been run should be done strictly in accordance
with the manufacturer's recommendations. The conse-
quences of incorrect tightening of the cylinder head can
prove very expensiv ...