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1-94
_
PRY FORWARD
FIG.
43-Thrust
Bearing Alignment
ends
of the seals leaving
approxi-
mately 0.0
1
0
inch
of the
seal
protrud-
ing fro
m the
block and
beari
ng cap.
2.
Carefully lower the
crankshaft
and
timing
gear
into place.
Be careful
Dot
to damage the
bearing
surfaces.
3.
Check the clearance of
each
main
bearing fo llowing the procedure
under
"
Main
Bearing Replacement"
in Section
8.
If
the bearing clearances
are satisfactory, apply a
light
coat of
engine
oil
1
0
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 150-164 fool-pounds to rque.
Dip
the rear bearing
cap
side seals
in
light engine
oil, then
immediately in-
stall them in
the grooves.
Do not use
sealer on the side seals, the seals are
designed
to expand when dipped in
oil. Using sealer
may
retard this ex-
pansion.
It
may
be
necessary
10
lap
the seals into place for the last
I/:z
inch
of
travel. Do not cut
the
seal
projecting ends. C heck
the rear main
bearing cap side seals
for
leaks by
squining a few drops of
oil
inlo the
parling lines
between
the bearing
cap
and the cylinde
r
block from
the
out-
side.
Blow
compressed
air
against
the
seals
from the
inside
of
the block.
If
air bubbles appear
in
the oil,
it
indi-
cates possible
oil
leakage.
The above
test should not be
perfonned
on new-
ly
installed seals until sufficient
time
has been aUowed for the seals
to
ex-
pand
into
the seal grooves.
GROUP 1- ENGINES
4. Install
the
Ihrust
bearing
cap
wit
h
the bolts finger
tight,
then
pry
the crankshaft forwa
rd
against
the
thrust surface of the upper half of the
bearing
(Fig.
43).
Hold
the crank-
shaft fo
rward
and pry the
Ihrust
bear-
ing cap to the rea
r
(Fig. 43). This
will
align
Ihe
thrust
surfaces of
both
halves of the
bearing.
Relain
the
for-
ward
pressure o
n
Ihe crankshaft,
and
tighten
the
cap
bolts to 150-
164 foot-
FIG.
44-Crankshaft End Play
HOLD
CRANKSHAFT
FORWARD
pounds torque (Fig. 43).
S.
Force
the crankshafc toward
the
rear
of
Ihe
engine.
Instali
a
dial
indi-
cator so the contact point rests
against
Ihe cranks
haft
flange
and
the
indi-
calor axis is
parallel
to the
crankshaft
axis (Fig. 44). Set the
dial on
zero,
then
push the crankshaft for
ward
and
note the reading
on
the dial.
If
the
end
play exceeds
the wear
limit,
replace
the
thrust
bearing. If
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