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ENGINE
20
.
To
instqll
the
cylinder
heod:
-
Remove
the
cylinder sleeve
blocks
8.0104D.
-
Coot the
two sides
of the
new
cylinder
heod
gosket
with linseed oil.
-
Plqce
the
qqsket onto the block with
the
word
"dessus"
up.
The crimped
edges down
ogoinst the block.
-
Center
the
gosket with
the
cylinder
heod
guides
B.0ll5 in
the two
end
bolt holes 8
curd
t2.
-
Fit
the
heqd
into
position
over the
guides
en-
goging the
rod
of theblock
wqter
drqin
vqlve
in
its
brqcket.
8.0115
g{Ëïil
CYLINDER
HEAD
GASKET
The
heod
gosket
is
mode
up
of
o
sheet
oí
re-
iníorced osbestos,
clomped
between
two sheets
oÍ golvonized steel. Thecorners
hove
been
cut
off to
permit meosurementoí
the
thickness
with
the
heod
bolts
torqued which should
be .0ól
"
+
.004".
\
\
\\
1
^r
L-ZL
CYLINDER
HEAD
The
cylinder heod
is
cost in
oluminum
olloy "Alpox"
with oÍfset sphericol
com-
busion
chomber
domes.
Height
of
the
cylinder heod
is
3.642,,
t.005".
The
moximum
deformotion
írom
o
plone
surfoce ollowed
is
.002".
lf
more
thon
this
omount
is
found,
the goskei
surfoce
moy be
ploned
up
to
.040".
Thus
the
minimum
height
of
the cylinder
heod
is
3.602".
No
further
cut is
permitted.
SPARK PLUG PROTECTOR
TUBES
In
cose one
or
more
oí the
spork
plug
pro-
tecfor tubes ore
reploced;
they
must
be
pressed
in
so thot the plug covers
foce
the position
shown.
Use
Permofex
#l
to
prevent leoks.
<-
VALVE
SEATS
AND
GUIDES
The volve seofs ond guides
of cost
iron
ore
removed
ond instolled
by
immersing
the
cylinder heod
in
boiling woter.
They
.
ore ovoiloble
in
stondord
qnd oversizes-
The
heod must
be
reomed
to
o
diometer
oÍ
.003"
smoller thon
the
replocement guide
or
seoi. AÍter new guides ore
instolled,
they
must be
reomed
to
8.5
mm.,
then
fitted ro ollow .008" volve
stem cleoronce
with
on
odiustoble
reomer.
Aïter
new
volve
seots
ore instolled,
they
must
be
Íoced
to
ongles
of
30" intoke
ond
45o
exhoust. The
chomfered
edge
oÍ
the
seot should not exceed
1/16".
È.
4
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