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15
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CYLINDER HEAD GASKET
Remove and refit
Service tool: 18G 694
12.29.02
Removing
I
NA
2 Drain the cooling system.
3 Disconnect the hoses from the water
outlet elbow.
4 Disconnect the breather
hose from the
cylinder side cover.
5
6
7
8
9
10
II
12
13
14
15
16
17
18
19
20
NA
Disconnect the lead from the thermal
transmi tter.
Disconnect the supply lead from the
heater plugs.
Disconnect the spill rail and return
pipe from the injectors and lay the
spill rail aside.
Remove Nos. 3 and 4 injector pipes.
Remove Nos.
I and 2 injector pipes.
Remove the oil dipstick.
Release the dipstick tube from the
cylinder head
nut
and withdraw the
tube from the crankcase.
Disconnect and remove No. I heater
plug.
Remove the rocker cover and gasket.
Remove the rocker shaft assembly,
noting the locking plate
on
the rear
bracket and the shim under each
centre bracket.
Withdraw the push·rods, retaining.
their order for refitting.
Remove the cylinder head nuts.
Lift
off
the cylinder head.
NOTE: The combustion chamber
inserts may drop out
of
the cylinder
head
as
it
is
lifted; they ·MUST be
refitted in their original positions.
Remove the cylinder head gasket.
5
12
Refitting
21
Reverse the procedure in l
to
20.
noting:
a Fit the cylinder head gasket with
the
face
marked
'TOP'
uppermost.
b Ensure that the combustion
chamber inserts are fitted flush
with the cylinder head face.
c Leave the cylinder head nuts
finger tight until the rocker shaft
assembly has been fitted.
d Tighten the cylinder head nuts
to
75 Ibf ft (10.4 kgf
m,
102 Nm)
in
the
sequence shown, using tool
18G 694
to
reach
the
centre row.
e Tighten the rocker brackets nuts
to
25 Ibf
ft
(3.5 kgf
In,
34 Nm).
f Adjust the valve rocker clearance,
see 12.29.48.
g Bleed the fuel system, see
19.50.05.
h Apply Loctite
to
the
bottom
of
the dipstick tube:
22 Run the engine for a minimum
of
I 5 mins and
on
return
slacken the cylinder head nuts
approximately
1
of
a turn in the
sequence shown before retightening
them
to
75 Ibf ft (10.4 kgf
m,
102
Nm)
in
the sequence shown. Check
the
valve rocker clearances.
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Co)
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