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V
3S
Selection
SIZe
vso
3.~
____________________________
-"
30
Selection of
cylinder
d
iame ter
-
V
35 model
CLASS A
CLASS B
ClASSC
66.000
+
66.006
-T-
66.012
-;-
66.006
mm
66.012
mm
66.0
18
mm
(2.5984
+
(2.5986
+
{2.5988
-0-
2.5986"}
2.5988")
2.5990")
Selection o
f
cy linder
diameter
-
V
SO model
CLASS A
CLASS B
CLASS C
74
.000
+
74.006
+
74.012
+-
74.006
mm
74 .0 12
mm
74.01
8 mm
2.9134
....
(2.9136
+
(2.9138
7-
2.9136")
2.9138")
2.9140")
Cylinder
s
of
c lass
A·B·
C
have
always
to be
matched
with
pistons
of
same
c
lass.
eRe-fitting
•
Fit
new
gasket
" A·.
on
c
rankcase
studs, insert
the
c
ylinde
r
barrel
a lter ensuring
thai
the l
ubricating
pas-
sages
in
the gas ke
t
and
in
the
barrel overlap
each
othe
r
;
•
re
place
a
lso
seals
",E
..
and
..
F
..
on
the
push
rods.
a
lso
the
cylinder
head
asbestos
g
aske
t
(See
fig. 39).
INTAKE
TUBES
European
model
The
intake
l
ubes
a re
marked
..
O
~
V
50
(ri
ghl),
.
5
..
V 50
(teft).
The
same
l
ubes fit also the V 35 model
(except
the
V
35
-
G
ermany).
5.5
- a
REMOVING
THE
COM
PRESSION
RINGS
AND
OIL
SCRAPER
S
FR OM THE PI STON
These
rings
shou
ld
be removed
/r
om
the piston with
great
care
to prevent
breakages
.
Widen th
e
rin
g ends
just
s
ulfi
c
iently to
sli
p them
off
the
piston
.
b
Checking
operations
•
Ensure th
e
p iston
slo ts c
learance
is
as
specified
in the
table
and in
fig
.
40
(heig ht
cleara
nce)
.
•
Check piston
r
ing
gap wi
th
a
fe
e
ler gauge with
the
rin
gs
i
n the
barre
l
(See
~
Pi
s
t
on
rin
gs
gap.· and
fig. 41).
Piston
l ings
and
all
scraper -
Piston slo ts
heigh
I
clearan
ce
•
Compression
rings
",A,.
and
..
8
..
in
'ig.
42
0.030
+
0.062
mm
(.00118
+
.002441
•
Scraper ring
KC"
in
fig
.
42
0.030
+
0
.062
mm
(.0011
8
+
.00244")
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