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10.
TABLES
of
CORRECTION STANDARDS
r
ITEM
:ORRECTIOP
METHOD
STANDARD
CORRECTION
LIMIT
0.05
2.2
Flatness
0.03
Intake
Exhaust
Valve seat contact width
1.4
Valve guide I.D.
I
7
dia.
to.015
0.1
5
1
DY30D.
6
I
76dia.
+0.019
Inside dia.
0.1
0.25
DY35D.
B
DY41 D,
B
82
dia'
+0.022
+"
Roundness after boring
0.01 5
Cylindricity after boring
0.01
I
DYSOD,
B
I
75.96
1
S.
1.
D.
I
CY-35D.
B
DY41 D.
B
81.94
~
DY30D,
B
76.21
Oversize
A
-0.02
DY41 D.
B
O.D.
at
skirt,
in
thrust direction
(Incl. over size)
-0.1
0.1
3
0.1
1
DY30D.
B
1
76.46
I
Oversize
0
DY35D,
DY4t D,
B
82.44
+O
,060
+O
.040
Width
of
groove for the rings
+0.025
+O
.005
Piston
pin
hole
21 dia.
1
M.008
to.001
0.03
0.1
5
0.2
0.15
I
Skirt portion
Clearance between
piston and cylinder
DYSOD,
B
DY350,B
0.04OL-0.079L
DY41 D,
B
0.060L -0.1 02L
0.2
1
0.1
5
Clearance between piston ring
and ring groove
0.05L
-
0.09L
0.01 5L-0.055L
0.1 5
1
0.05L
0.1
0.05L
Fit between piston and piston
pin
0.005L-O.008L
te"j
0.3
-
0.5
Piston ring gap
Oil
0.25
-
0.45
-42
-