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B.
CYLINDER
HEAD.
VALVES
and
ROCKER
ARM
~
NOTE
;
Clean valves and wash cylinder head thoroughly.
Remove carbon and gum deposits from the valves, seats, ports and guides.
Inspect valves, valve
seats
and varve guides.
*
Replace valves that are badly burned, pitted or warped.
Valve
guides
should
be
replaced when valve
stem
cIearance
exceeds
specifications.
(Refer to
SERVICE
DATA for clearance specifications.
)
If exceeds, draw valve guides
out
and press new guides in.
After replacing valves and guides, lap valves in place until a uniform ring shows around
the face of the valve.
(1)
Attach
oil
seal
both onto
intake
and
exhaust valve
guide.
(2)
Apply oil
to
valve
spring
and valve stem.
Place
cylinder
head on flat table
and
install valve
spring,
valve and spring retainer.
SPRING
RETAINER
SPRING
RETAINER
\
d,
COLLET-VALVE
VALVESPRING
COLLET-VALVE
SEAL-INTAKE
VALVE
(BLACK)
VALVE
SPRING
Fig.
523
fig.
5-24
EXHAUST
VALVE
-
28-