SIX
CYLINDER
ENGINE
6-19
can
be checked by using a suitable
dial
indicator or
Prussian
blue. When using
dial
Indicator, total
run-
out should not exceed .002".
When
prussian blue is used, a light coat should be
applied
to face of valve only and valve rotated in its
seat. If blue appears all the way around valve seat,
valve seat and valve guide are concentric with one
another.
3.
Check
concentricity of valve stem and face of
valve.
After cleaning prussian blue from valve and
seat, lightly coat valve seat with prussian blue again
and
rotate valve in guide. If blue appears all the way
around
valve, valve stem and valve face are concen-
tric
with one another.
NOTE:
Both
tests
in
steps
2 and 3 are necessary
to insure proper
valve
seating.
IMPORTANT:
If it is necessary to grind any pit
from rocker arm end of
valve
stem,
feed end
squarely
against
grinding wheel. Only the
extreme
end of the
valve
stem
is hardened to resist
wear.
Do
not grind end
excessively.
ASSEMBLE
1. Starting with No. 1 cylinder place exhaust valve
in
the port and place valve spring and cap in position.
Place
spring and cap on exhaust valves.
Then
using
J
8062 spring compressor, compress spring and in-
stall
oil seal with J 22330 and valve keys. See that
seal
is flat and not twisted in the valve stem groove
and
that keys seat properly in valve stem groove.
NOTE:
Place
valve
springs in
position
with
closed
coil
end
toward
cylinder
head.
2.
Assemble remaining valves, valve springs,
shields, spring caps, oil seals and valve locks in
cylinder
head.
Check
seals by placing vacuum cup
of J 22330 over valve stem and cap, squeeze vacuum
cup to make sure no oil leaks past oil seal.
3.
Install
cylinder head as previously described.
HARMONIC
BALANCER-REMOVE
AND
REPLACE
1. Loosen generator at adjusting bracket and pivot
bolt and remove fan belt from harmonic balancer.
On
cars equipped with power steering, also remove
power steering pump belt from harmonic balancer.
2.
Position fan so wide angles
will
be at top and
bottom, allowing access to balancer.
3.
Remove harmonic balancer attaching bolt and
retainer
washer.
4. Remove harmonic balancer using puller J 6978,
Use
of a washer (manifold bolt washer) in end of
shaft
will
prevent tool damaging threads in
crank-
shaft.
.4.-.
.
Fig.
6-31
Lower
Front
Timing
Cover
Retaining
Bolts
5.
Install
new harmonic balancer using suitable
instrument
by reversing above steps, lining up key-
way in balancer with key on crankshaft.
6. Tighten harmonic balancer attaching bolt to
160 lb, ft. torque.
NOTE:
Remove flywheel cover and lock flywheel
before tightening balancer
bolt.
LOWER
FRONT
TIMING
BELT COVER-
REMOVE
AND
REPLACE
1. Remove harmonic balancer, fan and water pump
pulley,
2.
Remove two attaching bolts and remove cover
(Fig.
6-31).
3.
Install
cover by reversing above steps. Tighten
cover attaching bolts to 20 lb. ft.
CRANKSHAFT
TIMING
BELT SPROCKET
OR
CRANKCASE COVER SEAL-REMOVE
AND
REPLACE
REMOVE
1. Remove upper front timing cover.
2.
Align timing marks (Fig. 6-7).
3.
Remove fan and water pump pulley.
4. Remove harmonic balancer.
5. Remove timing belt lower front cover (Fig.
6-31).
6. Loosen accessory drive mounting bolts to pro-
vide slack in timing belt.
7. Remove timing belt.
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