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1·16
GROUP 1- ENGINES AND EXHAUST SYSTEM
FIG.
25-Valve Push Rod Removal
7. Disconnect the
spark
plug
wires
at
the
spark plugs
and the tempera·
ture
sending
unit
wire at
the
sending
unit.
8. Remove the
valve
rocker
arm
cover.
9. Remove tbe
valve
rocker arm
shaft
assembly.
Remove the
valve
push
rods
in
sequence (Fig.
25).
10. Remove
one cylinder
head bolt
from
each
end
of the
head
and
in-
stall the cylinder head guide studs
(Fig.
26). Remove
the
remaining
cylinder
head
bolts
and
remove
the
cylinder
head. Do not pry between
the cylinder head and block as the
gasket surfaces may become dam-
aged.
CYLINDER HEAD INSTALLATION
1.
Clean
the head
and
block
gas·
ket
surfaces.
If the cylinder head
was
removed for a
gasket
change, check
the flatness
of
the
cylinder
head
and
block.
2. Apply cylinder head
gasket
sealer to both
sides of a
new
gasket.
Use the brush
furnished
to
spread
the
sealer evenly
over
the entire gasket
surface.
Position the
gasket over
the
guide studs
on the
cylinder block.
3.
Install
a new gasket
on
the
flange
of
the muffler inlet pipe.
4. Lift the
cylinder
head over the
guides
and slide
it down
carefully,
guiding the exhaust manifold
studs
into the muffler
inlet
pipe.
S.
Coat
the threads
of
the
No.
1
and 6
bolts
for
the
right side
of
the
cylinder head
with a small amount of
water resistant
sealer.
Install, but do
not tighten
two bolts
at opposite
ends of
the head to hold the head
and gasket
in
position.
Remove the
guides, then
install
the remaining
bolts.
FIG.
26-Cylinder Head Guide
Studs
A 1369-A
FIG.
27-Cylinder Heod Bolt
Tightening Sequence
6. The
cylinder
head
bolts are
tightened in three
progressive steps.
Torque all
the
bolts
in
sequence (Fig.
27) to
55
ft·lbs, th en
to 65
ft·lbs,
and
finally
to
75
ft·lbs.
After the
cyl.
inder head bolts have been torqued
to specifications, the bolts should not
be
disturbed.
7. Apply Lubriplate to both
ends
of
the push
rods. Install the push
rods
in
their original
bores,
positioning the
lower
end of
the
rods
into the tappet
sockets.
Apply
Lubriplate
to the
valve
stem
tips
and
to the rocker
arm
pads.
·8.
Install
the
valve
rocker
arm
shaft
assembly following
steps 2 and
3 under
"
Valve
Rocker
Arm
Shaft
Insta
ll
ation."
9. Perform
a preliminary (cold)
valve
lash
adjustment.
10. Install the muffler inlet pipe
lock
washers
and retaining nuts.
Posi-
tion
the
inlet
pipe clamp on
the
support bracket
on
the
engine
and
tighten the
clamp.
11.
Connect
the
radiator
upper
hose
at
the
coolant outlet elbow. Con-
nect
the
heater
inlet
and
outlet
hoses
at
the
water pump.
Connect the
car-
buretor
spacer outlet
line
at
the
spacer.
12.
Position
the
distributor vacu-
um line, the carburetor fuel inlet
line,
and the
vacuum
line
on
the
engine.
Connect
the
fuel
inlet line and
the
distributor vac;uum line
at
the
car-
buretor,
Connect
the
vacuum
line
at
the carburetor
spacer or
intake mani-
fold.
Connect the
battery cable
to
the
cylinder head.
On an engine with positive crank-
case
ventilation,
position
and
connect
the
vacuum line
at
the regulator valve
fitting
and fuel pump. Clean
the regu·
lator
valve parts, exhaust
tube, rub-
ber
hose
connections,
and
outlet
adapter.
Install the regulator
valve.
Install
the crankcase outlet adapter.
Be
sure
the outlet
adapter
is not
loose. To avoid restricting the venti-
lation
system,
do not install the
adapoter into the cylinder block more
than
lh-inch. Position and connect
the exhaust
tube
at
the regulator
valve and crankcase outlet adapter.
13.
Connect
the accelerator rod
retracting
spring. Connect
the choke
control cable
and the
accelerator
rod
at the
carburetor.
Adjust
the choke
control cable.
14.
Connect
the
distributor vacu-
um line
at
the distributor.
Connect
the
carburetor fuel
inlet line
and
the
vacuum line
at
the
fuel pump.
IS.
Co
nnect the temperature
send-
ing unit
wire at
the
sending
unit.
Con-
nect the
spark
plug
wires.
Be sure the
wires are forced all the way down into
their
sockets.
16.
Fill
and bleed the
cooling
system. Start
the
engine and
operate
it for
a
minimum of 30 minutes at
1200 rpm to
stabilize engine
temper-
atures. Check
for coolant
and
oil
leaks.
Adjust
the
engine idle speed
and
the
idle
fuel
mixture.
Check the
valve
lash
with
the
engine
idling and
adjust
the lash, if necessary, using a
step·type
gauge.
17.
Install
the
valve
rocker
arm
cover following step
5
under "Valve
Rocker Arm Installation," Install the
air cleaner.
CYLINDER HEAD DISASSEMBLY
1. Install the cylinder head hold·
ing
fixtures
(Fig. 28).
Remove de·
posits
from
the combustion chambers
and
valve heads with
a
scraper
and
a
wire
brush before removing the
valves.
Be careful not to scratch the
cylinder head gasket surface.
2.
Compress
the valve
SpI
iogs
(Fig. 29).
Remove the valve retainer
locks and release the
spring,
If
the
valve
locks are
stuck,
place
a
piece
of steel
tubing
(%
-inch OD,
'h
-inch
ID
and 3-inches
long)
over
the
end
of
the valve
stem squarely against
the sleeve
surface.
Tap the tube with
a steel
hammer to dislodge the locks.
A 1386-8
FIG.
2B-Cylinder Head Holding
Fixtures
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