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1-34
GROUP 1-
ENGINES
WASHER
\~
\\y.1I
CRANKSHAfT
SPROCK
ET
FRONT
Oi
l
SEAt
REAR
Oil
SEAl
~
REAR
~'l
U
SCREW
OIL
BEARING
INSERT
,"NGER
~O<ATEI
-II
fRONT
AND
INTERMEDIATE
BOlT
BEARING CAP
BEARING CAP
O
IL SEALS
FIG.
34-crankshaft ond Related Parts
H eat
the
new
ring
gear evenly
until
the gear
expands
enough
to
slip
onto
the f\
yw heeJ.
Make
sure
the gear
is
sealed properl
y
against
the
shoulder.
Do not heat
any
portion of
t he
gear
to a temperature
higher than
500
°
F.
If
this
limit
is
exceeded,
the temper
will
be
removed
from
the
ring
gear
teeth.
fLYWHEEL INSTALLATION
1.
Posit
ion
the fl ywheel on
the
cranksh3fc
fl
ange
and
install the
mounling
bolts.
Tighten the
bolts
in
seque nce ac ross
from
each
othe
r
to
specifications.
2.
On a
m
anual-shift transmission,
insta
ll [he
clutc
h
disc
a
nd
the
pressure
plate
and
cover
assembly
as
o
utlined
in Part
3-
1.
3.
Connect
the
transmission
to the
engi
ne
as
outlined
in
Group 3
(manual-shift
transmissions)
or
Group
4
(automatic
transmissions).
CRANKSHAn
The
cranks
haft
and
related parts
are shown in
Fig.
34.
REMOVAL
1.
Drain
the
cooling
system and
the
crankcase. Remove
the
engine
from the
chassis and
install
it
o
n
a
work stand.
Remove the
d
istributor.
oil
level dip
stick,
water
pump,
gen-
erator, crankshaft dampe
r.
cylinder
front
cover,
and
the
crankshah front
oil
slinger.
Remove
Ihe sprockets
and
liming
chain.
Re
mOve
the fl
yw
heel,
crankcase
ventilation tube,
oil
pan,
and the oil
pump.
2.
Make
sure all
bearing
caps
(main
and connecting
rod)
are
marked
so
the
y
can
be
installed in
their
original
locations.
Remove
the
connecting rod
bearing
caps,
using
care
not to
intermix the caps,
then
push
the
pistons
to the
top
of
the
cyl-
inders, Remove
the main
bearing
caps.
3.
Carefully
lift
the
crankshaft
out
of the
block
so
the
thrust
bearing sur-
faces are
not
damaged. Remove the
rear journ al
oi
l
seal
from
the
block
and
rear
bearing
cap,
and
remove
the
cap
to block side seals.
4.
If
new main and
/or
connecti
ng
rod
bearings
are
to
be
installed,
re-
move
the
main bearing
inserts
from
the
block and
the bearing
caps,
and
/or
the connecting
rod bearing
in-
serts
from
the
connecting
rod
and
cap.
In stall new
bearings
following
the
procedure in Section 8-"Main
and
Connecting
Rod Beari ng Re-
placement."
INSTALLATION
1.
Be
sure
the
bearings,
crank-
shaft
journals,
and
the
rear
journal
oil
seal
grooves are clean.
Install
a
new
rear
oil
seal
in the cylinder block
(Fig. 35),
and in
the rear
main
bear-
ing call
(Fig.
36).
After installat ion,
cut
the ends
of
the
seals
fl
us
h.
2.
Carefully
lower
the crankshaft
into place.
Be
careful nol
10
damage
Ihe
bearing surfaces.
Fl
YWHea.
~~,;~~:
ICONVENTIONAl
OR
OVERORIVE
TRANSMISSION)
1306-1
3.
C
heck
the
clearance
of
each
main bearing
following the procedure
under "
Main Bearing
Replacement"
in
Section 8.
If
the bearing
clearances
are satisfactory, apply
a
light
coat
of
engine
oil
to
the
journals
and
bear-
ings,
then
install all
the
bearing
caps
except
the
thrust bearing cap
(No.3
bearing).
Tighten
the bearing cap
bolts to 95-105 foot-pounds
torque.
Dip
the
rear bearing
cap
side
seals in
light
engine
oil,
then immediately
in-
stall them
in
the grooves.
Do not use
seale
r on
Ihe
side
seals. The seals
are
designed
to
expand
when
dipped in
oil. Using
sealer
may
retard Ihis
ex-
pansion. It
may be necessary
to
tap
the seals
into
place
for
the last
Y.t
inch
of travel.
Do not
cui
the seal
projecting ends. C
heck
the side seals
fo
r leaks
by
sq
uirting
a
few drops
of
oil into
the
parting
lines
between the
rear bearing cap
and the cylinder
block from
the
outside.
Blow
com-
pressed
air
against
the
seals
from the
inside
of
the
block.
If
air
bubbles
ap-
pear in the
oil, it
indicates
possible
oil
leakage.
The above lesl
should nol
be
perfonned
on
newly
installed
seals
until
sufficient time has
been
allowed
for
the
seals
10
expand inlo
Ihe
sea]
jtrooves.
4. Install the
thrust
bearing
cap
with
the
bolts finger tighl,
then
pry
the crankshaft
forwa
rd
against
Ihe
thrust
surface
of the uppe
r
haU of
the
bearing (Fig.
37).
Hold
the
crank-
shaft
fo
rward
and
pry the thrust
bear-
ing
cap
to
the rear
(Fig.
37). This
will
align
the
thrust
surfaces
of
both
halves
of the bearing. Retain the for-
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