
CHERY A21 SERVICE MANUAL
MECHANISM OF 2.0NALC ENGINE
4
Outer Diameter
Pressure Height
16
±
0.3
Protruding Part of Valve Stem
47.5
Piston
Piston Skirt Diameter
83.46
±
0.009
1
st
Ring
0.04--0.08
Side Clearance
2
nd
Ring
0.01--0.025
1
st
Ring
0.2--0.4
End Play
2
nd
Ring
0.4--0.6
1
st
Ring
2
nd
Ring
Piston
Ring
Height
Oil Ring
1
st
Ring
2
nd
Ring
Ring
Groove
Height/ Depth
Oil Ring
2.5
Diameter
Length
60
Piston Pin
Diameter of Piston Pin Hole
Axial Clearance
0.076--0.265
Radical Clearance
-0.0375
Coaxial Degree
0.05
Cylindricity
0.008
Crankshaft Mainshaft Diameter
Roundness
0.005
Cylindricity
Crankshaft
Connecting Rod Journal Diameter
Roundness
Whole Height
218
±
0.05
Cylinder Hole Roundness / Straightness Accuracy
0.008 / 0.01
Cylinder
Upper Surface Planeness
0.04
Radial Clearance of Connecting Rod Bearing
0.016--0.051
Connectin
g Rod
Axial Clearance of Big End
0.15--0.4
11
051
.
0
040
.
0
+
+
2
.
1
05
.
0
03
.
0
+
+
5
.
1
04
.
0
02
.
0
+
+
5
.
2
03
.
0
01
.
0
+
+
21
0
005
.
0
−
21
008
.
0
002
.
0
2
.
1
01
.
0
03
.
0
−
−
5
.
1
005
.
0
030
.
0
−
−
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Summary of Contents for A21 2005
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