Perkins Phaser Series - AUXILIARY EQUIPMENT

12 CYLINDER HEAD ASSEMBLY
To fit
1 Check the seal of the oil filler cap (A1), the
sealing washers (A5), the steel washer (A3) and, if
fitted, the shim washer (A4) for the cap nuts (A2).
2 Check the condition of the rocker cover joint (A6)
and of the dust seal (A7). If necessary, the joint and
the seal can be removed and renewed.
3 Clean the joint face of the cylinder head and fit
the rocker cover together with the dust seal.
4 Fit the sealing washers, the steel washers, the
shims (if fitted) and the cap nuts.
Caution: Damage to the sealing washer can occur
if the cap nut is not tightened centrally through the
sealing washer and the rocker cover. If the sealing
washer is damaged it must be renewed.
5 Tighten the cap nuts to 20 Nm (15 lbf ft)
2,1 kgf m.
Notes:
• The latest engines have an extra shim washer
(A4) fitted between the cap nut sealing washer and
the steel washer for the cap nut. If shim washers
are fitted to aluminium rocker covers, tighten the
cap nuts to 30 Nm (22 lbf ft) 3,0 kgf m. If shim
washers are fitted to composite rocker covers,
tighten the cap nuts to 20 Nm (15 lbf ft) 2,1 kgf
m.
• Some earlier 1000 Series engines have a rocker
cover joint that has a ribbed bottom face. When this
joint is fitted, ensure that the flat face of the joint is
towards the rocker cover.
PA046
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12A.04 Perkins Phaser/1000 Series, April 1995