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PART 8-4-302 351 C.I.D. VB ENGINE
8-47
REMOVAL
1. Remove the
air
cleaner and intake
duct
assembly.
If a right cylinder head rocker
arm
is
to
be ·
removed, remove the crankcase
ventilation regulator valve from the
valve
rocker arm cover.
2. Disconnect the spark
plug wires
from the spark plugs by grasping, twisting
and pulling the moulded cap
only.
Remove the wires from the bracket
on the
valve rocker arm cover(s) and position
the
wires out of the way.
3. Remove the valve rocker
arm
cover(s).
4. Remove the valve rocker
arm
·
bolt,
fulcrum seat and rocker arm.
INSTALLATION
All rocker arms and fulcrum
seats are
to
be
lubricated with heavy engine
oil MS
before installation.
1. Apply Lubriplate
or equivalent to
the top of the valve stem. Lubricate
the
rocker arm and fulcrum seat
with heavy
engine oil MS.
2. Position the
No.
1
piston on TDC
at the end of the compression
stroke,
POSITION A in Fig. 5 and install
the
rocker arm, fulcrum seat and
bolt on the
following
valves:
No. 1 Intake No. 1 Exhaust
No. 4 Intake No. 3 Exhaust
No. 8 Intake No. 7 Exhaust
Position the crankshaft in
POSITION
B in Fig. 5 and install the rocker
arm,
fulcrum seat and bolt
on
the
following
valves:
No.
3 Intake
No.
2 Exhaust
Jllo.
7 Intake
No.
6 Exhaust
Position the crankshaft in
POSITION
C in Fig. 5 and install the rocker
arm,
fulcrum seat and bolt on the following
valves:
No.
2 Intake
No.
4 Exhaust
No.
5 Intake No. 5 Exhaust
No. 6 Intake
No.
8 Exhaust
Be
sure that the fulcrum seat
base is
inserted in its slot on the cylinder
head
before
tightening the fulcrum
bolts.
Tighten the fulcrum bolt to specification.
Check the valve clearance following
the
procedures
under
Valve
Clearance
Checking Procedure page 8-12
.
3. Clean
the
valve
rocker
arm
cover(s) and the cylinder
head gasket
surface(s). Apply oil-resistant
sealer to one
side of new cover gasket(s). Lay the
cemented side of the
gasket(s) in place in
the cover(s).
4. Position the cover(s)
on the
cylinder
head(s).
Make sure the
gasket
seats evenly all around the
head. Install
the
bolts. The cover is tightened in
two
steps. Tighten the bolts to specifications.
Two minutes later, tighten
the bolts
to
the
same specifications.
If
the right cover was removed, install
the crankcase ventilation regulator valve.
Install the air cleaner and intake duct
assembly.
5. Install the spark plug wires in the
bracket on the valve rocker arm cover(s).
Connect the spark plug wires.
6. Start the engine and check for
leaks.
INTAKE MANIFOLD
The Intake Manifold Assembly is
shown in Fig. 7.
REMOVAL
1.
Remove the
air
cleaner and intake
duct.
2. Disconnect the high tension lead
and wires from the coil. Disconnect the
engine wire loom and position it out of
the way.
3. Disconnect the spark plug wires
from the spark plugs by grasping, twisting
and pulling the moulded cap
only.
Remove the wires from the harness
brackets on the valve rocker arm covers.
Remove the distributor cap and spark plug
wire assembly.
4. Remove the carburetor fuel inlet
line.
5. Remove the heater hoses from the
retainers and position the hoses out of the
way.
6. Remove the ignition coil and
bracket.
7.
Disconnect
the
crankcase
emission hose at the right rocker arm
cover.
8.
Disconnect the vacuum lines from
the intake manifold. Remove the bolts
attaching the vacuum outlet to the left
hand rocker arm covers," if so equipped.
9. Disconnect
the
distributor
vacuum
hoses
from
the
distributor.
Remove the distributor hold down bolt
and remove the
distributor.
10. Disconnect the accelerator linkage
and transmission downshift linkage, if so
equipped, and position out of the way.
11. Remove the carburetor.
12. Remove: the manifold attaching
bolts. Remove the manifold. Remove and
discard the intake manifold gasket and
seals.
13.
If the manifold assembly is to be
disassembled,
identify
all
vacuum
hoses
before disconnecting them.
INSTALLATION
1. If the intake manifold assembly
was
disassembled,
install
the engine
identification tag.
2. Clean the mating surfaces of the
intake
manifold, cylinder heads and
cylinder block. Use a suitable solvent to
remove all traces of oil.
3.
Position new seals on the cylinder
block
and
press
the
seal
locating
CHOKE HEATER
v'
M~~~--.._....-
...... ..,.
~
INTAKE MANIFOLD
GASKET-9441
SEALS
9A424
A3238·A
FIG. 7- Intake Menifold Assembly
extensions into the holes in the mating
surface.
Apply non-hardening sealer
at
the
four junction points of the seals and
cylinder
heads.
Position
the
intake
manifold gasket onto the block and
cylinder heads with the alignment notches
under the dowels on the
cylinder
heads.
Be sure the holes in the gasket are aligned
with the holes in the cylinder head.
4. Carefully
lower
the
intake
manifold into position on
the cylinder
block and cylinder heads.
5. Be sure the holes
in
the manifold
gaskets and manifold are
in
alignment.
Install the intake manifold
attaching
bolts.
Tighten the intake manifold bolts in three
steps (Fig. 8);
Tighten all bolts in
sequence to
8-10
ft-lb.
Tighten all bolts
in
sequence
to
15-20
ft-lb.
Tighten
all
bolts
in
sequence to
specifications.
After
completing
the
remammg
asaembly steps, operate the engine until it
reaches normal operating temperature
then re-tighten the manifold bolts in
sequence to specifications.
6. Instalt the carburetor and gasket.
7. Rotate the crankshaft damper
until the No. 1 piston
is
on
TDC
at the
end of the compression stroke. Position
the distributor in the block with the rotor
at the No. 1 firing position and the points
just open. lrtStall the hold down clamp.
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