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Fig.2·110
21. B. Set the cylinder heads in position. Check
sealing surface first to make sure the sur-
face
is clean.
Slide an a-ring onto each of
the sixteen head bolts and start
all
the
head bolts. DO NOT TIGHTEN AT THIS
TIME.
Fig.
2·111
J
1
22.
B.
Apply
a
thin coat
of
silicone sealer
to
the
two
thermostat
housing gaskets.
Place
the gaskets and housing
into
position and
secure with four bo lts and washers.
Tor-
que the
four
bolts
in
a crisscross pattern
to
0.7-1.0
kg-m
(5-7
ft- Ib)
.
_
NOTE: The thermostat housing bolts must
-
be torqued before tightening the head bolts.
This will allow the gasket surfaces of the head to
align with the housing and prevent any coolant
leakage.
Fig. 2·112
23. B. Torque the head bolts in
three
steps
to
2.0·2.5 kg-m (14.5-18 ft-Ib)
using
the pattern
shown.
Fig.2·113
24.
Test
the
engine for air leaks
(see
Press ure
Testing Engine
section).
25. App ly a
very
thin
coat of s
ili
cone sealer to
both sides of
the
thermostat
·
gasket;
then
p lace the thermostat, gasket, and hous ing in-
to position
.
Secure with three bo lts, lock
washe rs, and
washers.
Fig. 2·114
35
EJ
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