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PART 8-4-302-351 C.I.D. VB ENG INES
screen. Prime by filling the inlet opening
with oil and rotate the pump shaft until
oil emerges from the outlet
opening.
Install the oil pump and the inlet tube
assembly.
8.
Position the oil pan gaskets on the
oil
pan.
Position the oil pan front seal on
the cylinder front
cover.
Position the oil
pan rear seal on the rear main bearing cap.
Install
the oil pan and related
parts.
Install
the oil level
dipstick.
9.
Fill the
crankcase.
Start the
engine and check for oil pressure. Operate
the engine at fast idle and check for oil
leaks.
PISTONS AND CONNECTING
RODS
REMOVAL
1. Drain the cooling system and the
crankcase. Remove the intake
manifold,
cylinder heads, oil pan and oil pump,
following the procedures in this
section.
2.
Remove
any
ridges
and/or
deposits from the upper end of the
cylinder bores as
follows:
Tum the crankshaft until the piston
to be removed is at the bottom of its
travel and place a cloth on the piston head
to collect the cuttings. Remove any ridge
and/or deposits from the upper end of the
cylinder bores. Remove the cylinger ridge
with
a
ridge
cutter. .
Follow
the
instructions
furnished
by
the
tool
manufacturers. Never cut into the ring
travel area in excess of 1/32 inch when
removing ridges.
3.
Make sure all connecting rod caps
are marked so that they can be installed in
their original
positions.
4.
Turn the crankshaft until the
connecting rod being removed is
down.
S.
Remove the connecting rod nuts
and cap.
6.
Push the connecting rod and
piston assembly out the top of the
cylinder with the handle end of a
hammer.
Avoid damage to the crankshaft journal or
the cylinder wall when removing the
piston and rod.
7.
Remove the bearing inserts from
the connecting rod and
cap.
8.
Install the cap on the connecting
rod from which it was
removed.
INSTALLATION
1. If new piston rings are to be
installed, remove the cylinder wall
glaze.
Follow the
instructions of the tool
manufacturer.
2.
Oil the piston rings, pistons and
cylinder walls with light engine
oil.
Be
sure
to install the pistons in the same cylinders
from which they were removed or to
which they were fitted. The connecting
rod aud bearing caps are numbered from 1
to 4 in the right bank and from 5 to 8 in
the left bank, beginning at the front of the
OIL RING SPACER
FIG.
31 -Piston Ring Spacing
engine. The numbers on the connecting
rod and bearing cap must be on the same
side when installed in the cylinder bore. If
a connecting rod is ever transposed from
one block or cylinder to another, new
bearings
should
be
fitted
and
the
connecting rod should be numbered to
correspond with the new cylinder number.
3.
Make sure the ring
gaps are
properly spaced around the
circumference
of the piston (Fig.
31);
4.
Install
a
piston ring
compressor
on the piston and push the
piston
in with
a hammer handle until it is slightly below
the top
of
the cylinder
(Fig. 32).
Be
sure
to guide
the
connecting rods to avoid
damaging the crankshaft
journals.
Install
the piston with the arrow on the piston
head toward the front of the
engine.
5.
Check the clearance of each
bearing following the
procedure under
Fitting
Main
and
Connecting
Rod
Bearings on page
8-33.
6.
After the bearings have been
.fitted,
apply a light coat of engine oil to
the journals and bearings.
7.
Turn the crankshaft throw to the
bottom of its stroke. Push the piston all
the way down until the connecting rod
bearing seats on the crankshaft journal.
8.
Install the connecting rod cap.
Torque the nuts to
specifications.
9.
After the piston and connecting
rod
assemblies
have been
installed,
check
the side clearance between the connecting
rods on each crankshaft journal (Fig.
33).
10. Disassemble,
clean, and assemble
the oil
pump.
Clean the oil pump
inlet
tube screen and the oil pan and
block
gasket
surfaces.
11. Prime the oil pump by filling
either the inlet port or outlet port with
engine oil and rotating the pump shaft
to
distribute the oil within
the
hou
sing.
Install the oil pump and the oil
pan.
12.
Install
the
cylinder
heads
following procedures under Cylinder Head
Installation.
8-57
FIG. 32-
Installing
Piston
FIG.
33
-
Checking Connecting
Rod Side
Cl
earance
13.
Install
the
intake
manifold
following
procedures
under
Intake
Manifold
installation.
14.
Fill and bleed the cooling system.
Fill the crankcase with the proper grade
and
quantity of engine oil.
1
S.
Start the engine and check and
adj
ust the ignition
timing.
Connect the
distributor vacuum hose at the distributor.
16.
Operate the engine at fast idle
until
it
reaches
normal
operating
temperature and check for oil and coolant
leaks. When the engine temperature has
stabilized adjust the engine idle speed and
idle fuel mixture.
17. Install the air cleaner and intake
duct assembly.
DISASSEMBLY
1.
Remove the bearing inserts from
the connecting rod and
cap.
2.
Mark the pistons and pins to
assure assembly with the same rod and
installation in the same cylinders from
which they were removed.
3.
Remove the piston rings. Using an
Arbor Press aPd the tool shown in Fig. 34,
press the piston pin from the piston and
connecting
rod.
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