Chery QQ6 (S21) / S12LHD. Manual - part 221
No.
Name
Dimension and tolerance
Fit clearance
Thickness of connecting rod big end
22
0
-0.1
4
Width of crankshaft connecting rod journal
22
+0.30
+0.15
0.15~0.4
First piston ring groove height
1.2
+0.05
+0.03
5
Top compression ring height
1.2
-0.005
-0.03
0.035~0.08
Second piston ring groove height
1.5
+0.04
+0.02
6
Second compression ring height
1.5
-0.005
-0.030
0.025~0.07
piston oil ring groove height
2.5
+0.03
+0.01
Blade height of steel strip composite type oil ring
0.46±0.02
7
Bracing spring height of steel strip composite type oil
ring
1.5±0.03
0.02~0.18
8
Crankshaft key groove width
014
.
0
010
.
0
5
+
−
9
Diameter of crankshaft front oil seal
Φ36
0
-0.1
10
Diameter of crankshaft rear oil seal
Φ75
0
-0.1
Outside diameter of engine oil dipstick tube
0
1
.
0
7
.
16
−
φ
11
Diameter of cylinder block scale tube orifice
043
.
0
0
7
.
16
+
φ
Diameter of cylinder head valve guide orifice
φ6+0.015
Outside diameter of valve guide
φ11x6
12
Diameter of cylinder head valve guide bottom orifice
φ11H7
-0.022～
-0.050
Outside diameter of intake valve stem
φ5.98±0.008
13
Diameter of cylinder head intake valve guide orifice
φ6+0.015
+0.012～
+0.043
Exhaust valve stem diameter
φ5.96±0.008
14
Diameter of cylinder head exhaust valve guide orifice
φ6+0.015
+0.032～
+0.063
Diameter of camshaft first journal
( )
050
.
0
066
.
0
6
32
−
−
e
φ
15
Diameter of cylinder head first bearing hole
+0.050～
+0.090
Diameter of camshaft second journal
( )
040
.
0
053
.
0
6
24
−
−
e
φ
16
Diameter of cylinder head second bearing hole
( )
021
.
0
0
7
24
+
H
φ
+0.040～
+0.074
17
Diameter of camshaft third journal
( )
040
.
0
053
.
0
6
24
−
−
e
φ
+0.040～