6.6.7)
Rockerarm
Check
rocker
arm
shaft and
rocker
arm
bearing surface
for wear. Inspect valve
stem
contact area and ball cup of
rocker
arm.
Signs
of
wear indicate
lack
of oil. Slight
rework
of contact area on
rocker
arm
is
allowed.
Check oil bore
for free
passage.
Dimension
of
rocker
arm bore
rocker
arm shaft
rocker
arm
radial
clearance
wcar at valve
stem contact
6.7)
Re-assembly of
cylinder
head
new mm
(in)
12,060+
12,080
(0,475 +
0A76)
12,A3+
12,0Y
(
0A73)
0,A26+
0,057
(0,001+
0,002)
0,000
wear limit mm
(in.)
12,20
(0,490)
1t,98
(0,472)
0,12
(0,12)
0,25
(0,010)
If renewing
the
rocker
arm shaft,
press
it into
position
with ends symmetrically
projecting.
At
renewal
of coolant bend,
mark
existing
position
first,
to ensure corect
positioning
of the
new
one.
Apply
OMNIFIT
230 M
to
thread
of bend,
fit it,
and allow
c. 10 min. for
curing at 80o C
(176"
F).
Place valve spring support in
position
and
fit new valve stem seal
(on
inlet side only). Insert
pre-oiled
valves,
place
inner
and outer
valve
spring and spring
retainer
in
position,
compress
valve springs by
utilizing
fitting
jig
and clamp
(see
chapter
6.6.2).Insert valve cotters
and
release springs. Apply MOLYKOTE
G-N to both ends
of
rocker
arm shaft,
fit left
and
right
rocker arm
and secure with circlip
lZxl.
I NOTE: Sharp
edge of
circlips
to
point
outwards.
The
cylinder
head
temperature
is
observed
by
a
pick-up
fitted in
a tapped
hole M I
0 on cylinder
head
2
or 3.
Additional temperature
readings
of the coolant are
not required.
6.8) Overrunning
clutch
Visual check
for
accumulation of oil
sludge
in
ovemrnning clutch housing O.
For cleaning,
remove
retaining ring
O,
compress circlip on
overrunning clutch
0 and twist out sprag unit and clean
components.
Measure
clutch
housing
and
ovemrnning
gear
for wear. The cir-
cumferential
helical
spring @ must not
be
loose or winding.
Sprags O
must
be
freely
moving
and the surface free of
damage. Checkengagementface inhous-
ing.
At
detectable
wear
of
gripping
faces
housing.
exchange corresponding
parts.
Inspect taper
bore
in
'Rm:r,912-UL
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