THE
FUEL
SYSTEM
Fig.
D.29
Section
through
the
cylinder
head,
showing
an
injector
nozzle
heat
shield
and
atomizer
seal
washer
Remove the atomizer seal washers from inside the
injector nozzle heat shields and the nozzle holder sealing
washers from the cylinder head.
If
necessary, withdraw
the injector nozzle heat shields and sealing washers
from the injector bores in the cylinder head. Should
difficulty be experienced in removing the heat shields, it
may
be
found necessary to remove the cylinder head and
withdraw the combustion chamber inserts, as detailed in
Section A.IS, when the heat shields can be driven out
from the inside
of
the combustion chambers.
Plug the injector bores in the cylinder head to prevent
the ingress
of
foreign matter into the combustion cham-
bers and cylinders.
When replacing, thoroughly clean the injector bores
in the cylinder head and ensure that the copper sealing
washers are in good condition and
will
make a gas-tight
joint. Renew
the
atomizer seal washers, fitting them
with their two edges pointing downwards as shown in
Fig.
D.29.
Place the injector assemblies in position and tighten
the securing nuts evenly to the figure given in the
'GENERAL DATA' section, using torque wrench
18G537.
Reconnect the high-pressure
feed
pipes to the unions
on the nozzle holder bodies and refit the
fuel
leak-oft'
pipe, ensuring that the copper sealing washers are
positioned on each side
of
the banjo-type unions.
D
D.23
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