Table Of Correction Standards - Robin America DY30 Service Manual

10. TABLES of CORRECTION STANDARDS
r
ITEM
:ORRECTIOP
METHOD
S T A N D A R D
CORRECTION
LIMIT
0.05
2.2
Flatness 0.03
Intake
Exhaust
Valve seat contact width
1.4
Valve guide I.D.
I
7 dia.
t o . 0 1 5
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,
D Y 4 t 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 . 0 0 8
to.001
0.03
0.1 5
0.2
0.15
I
Skirt portion
Clearance between
piston and cylinder
DYSOD, B
D Y 3 5 0 , 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
F i t between piston and piston pin
0.005L-O.008L
te"j
0 . 3
-
0.5
Piston ring gap
Oil 0.25
-
0.45
-42
-