Yanmar YSE8 - Wear Limits of Main Parts

7. WEAR LIMIT
OF
EACH
MAIN PART
Description
YSES
YSEl2
std. dim.
,
wear limit,
mm
std. dim,
,
wear limit,
mm
,l
Q
Clearance between
cylinder
liner and
piston
0:109
0.38
0.208
0.43
Clearance between
piston pin
and
piston pin
metal
0.0375 0.30 0.0375
0.30
Clearance
between crankpin
and
cranl<pin metal
0. 036 0.
14 0.036
0.17
Clearance
betweeo
crankshaft
journal
and crank
metal
0,057 0.
1? 0.059
0.18
0.07
0.18
.
0.068
0.
21
Clearance between intake/
exhaust valve and
valve
guide
0.0525
0.3
0.0525
0.3
Piston
ring end clearance 0.3
0,
-1
1.5
F:
Cylinder
liner top I. D.
-0.30
85
'0.34
Piston
skirt O.D.
75
-0.23
85
-0.26
Piston
pin
O.
D.
23
-0.10
28
-0.
11
Piston
pin
metal I. D.
+0.10
2a
+0.11
Crankshaft
pin
O.D.
-0.13
-0.
CrankshaJt
journal
O.
D.
44
-0,
13
-0.16
Crankpin
metal I.
D, 42
+0,11
+0.
12
Main
bearing
metal I.
D.
11
+0,13
Top
piston
ring
(chrome?lated)
Breadth
2,O
-0.15
-0.
15
Thick-
ness
-0.
33
3.7
-0.
37
s,!
2nd
&
sr.d
piston
rings
Breadth
2.0
-0.
15
2.5
-0.
15
Thick-
ness
-0.33
3.7
-0.
3?
Oil
ring
Breadth go
4.0
-0.
15
Thick-
nesa
3.3
-0.
33
3.7
-0.
3?
lntake/exhaust
valve
sping
Free
length
-1.5
to
-2.O
.
.:.
-1.5
to
-2.0
rl
b'
t'
I
-16