Chery QQ6 (S21) / S12LHD. Manual — part 85
No.
Name
Dimension and tolerance
Fit clearance
Diameter of cylinder head third bearing hole
( )
021
.
0
0
7
24
+
H
φ
+0.074
Diameter of camshaft fourth journal
( )
040
.
0
053
.
0
6
24
−
−
e
φ
18
Diameter of cylinder head fourth bearing hole
( )
021
.
0
0
7
24
+
H
φ
+0.040~
+0.074
Diameter of camshaft fifth journal
( )
040
.
0
053
.
0
6
24
−
−
e
φ
19
Diameter of cylinder head fifth bearing hole
( )
021
.
0
0
7
24
+
H
φ
+0.040~
+0.074
20
Camshaft thrust groove width
( )
025
.
0
0
7
65
.
30
+
H
+0.15~+0.20
Outside diameter of camshaft oil seal
4
.
0
2
.
0
50
+
+
φ
21
Diameter of cylinder head oil seal hole
( )
025
.
0
0
7
50
+
H
φ
-0.005~
-0.40
Diameter of cylinder head jib hole
( )
024
.
0
006
.
0
7
12
+
+
G
φ
22
Outside diameter of hydraulic jib
φ12-0.011
+0.006~
+0.035
Diameter of crankshaft timing gear segment
Φ28f7
23
Bore diameter of crankshaft timing gear
φ28+0.030
Key groove dimension of crankshaft timing gear
5
+
0.030
Key groove width of crankshaft gear
5
+
0.030
24
Semicircular key width
5
0
-0.030
0~0.06
25
Bore diameter of crankshaft pulley
φ74
+0.046
26
Outside diameter of timing gear
φ74
-0.05
-0.08
0.096~0.126
III. Primary Fit Clearance
Name
Fit Clearance
Axial clearance of crankshaft
0.07~0.265mm
Axial Clearance of Camshaft
0.15~0.20mm
Axial clearance of connecting rod
0.15~0.4mm
Fit clearance of connecting rod bearing
0.023~0.058mm
Fit clearance of main bearing
0.035~0.075mm
Fit clearance between intake valve stem and valve
0.012~0.043mm
guide
Fit clearance between exhaust valve stem and valve
guide
0.032~0.063mm
Fit clearance between hydraulic jib and cylinder
head hole
0.006~0.035mm
IV. Engine Primary Tightening Torque Table
Multiple steps tightening (torque +
angle)
No.
Connection part
Part name
Bolt
(thread specification)
Number
of bolts/
gaskets
(piece)
Tightening
torque
Nm (primary
tightening)
First step
tightening
torque (Nm)
Second step
angle (°)
Third step
angle (°)
1
Cylinder block main oil passage
screw plug 1
Hexagonal socket head
plug
M18×1.5
2
20+5
——
——
——
2
Cylinder block main oil passage
screw plug 2
Hexagonal socket head
plug
M10×1.5
1
20±3
——
——
——
3
Main bearing cap
Hexagon bolt
M11×1.5
4
——
45±5
180±10
——
4
Main bearing cap
Hexagon bolt
M11×1.5X92.5
6
——
45±5
180±10
——
5
Framework-cylinder block
Hexagon bolt
M8×1.25×55
10
20+3
——
——
——
6
Knock sensor-cylinder block
Hexagonal flange bolt
M8×1.25×35
1
20+0.5
——
——
——
7
Connecting rod cap-connecting
rod body
Hexagon bolt
M8×1
8
——
25±3
90±5
——
8
Oil pump assembly-cylinder
block
Hexagon bolt
M6×35
4
8+3
——
——
——
9
Engine oil collector bracket,
separator-framework
Hexagonal flange bolt
M6×12
9
8+3
——
——
——
10
Bleeding plug-oil pan
Hexagon bolt
M16×1.5
1
25±3
——
——
——
11
Oil pan-framework
Hexagonal flange bolt
M7×20
18
15+3
——
——
——
12
Oil pan-framework
Hexagonal flange bolt
M7×35
3
15+3
——
——
——
13
Oil pan-framework
Hexagonal flange bolt
M7×90
4
15+3
——
——
——
14
Water pump-cylinder block
Hexagon bolt
M6×25
5
8+3
——
——
——
15
Cylinder head oil passage
throttle bolt
Hexagon throttle bolt
M14×1.5
2
15+3
——
——
——
16
Camshaft bearing cap-cylinder
head
Locating bolt
M6×1×30
18
9.5±1.5
——
——
——
17
Camshaft bearing cap-cylinder
head
Hexagonal flange bolt
M6×1x30
2
9.5±1.5
——
——
——
Multiple steps tightening (torque +
angle)
No.
Connection part
Part name
Bolt
(thread specification)
Number
of bolts/
gaskets
(piece)
Tightening
torque
Nm (primary
tightening)
First step
tightening
torque (Nm)
Second step
angle (°)
Third step
angle (°)
18
Phaser control valve-first
camshaft cap
Inner hexagonal bolt
M6×1×15
2
8+3
——
——
——
19
Cylinder head-cylinder block
Inner hexagonal bolt
M10×1.5
10
——
50±5
20
Valve cover assembly-cylinder
head
Damping unit-valve
cover
M6×1×30
12
8+3
——
——
——
21
Camshaft position sensor-valve
cover
Inner hexagonal bolt
M6×1×15
2
8+0.5
——
——
——
22
Hanger-cylinder head
Hexagonal flange bolt
M8×14
2
20+5
——
——
——
23
Rear housing of timing
gear-cylinder head
Cross head screw
M5×15
6
5+2
——
——
——
Phaser-camshaft
Inner TORX hollow bolt
M12×1.25
2
120±5
——
——
——
24
Timing gear-camshaft
Bolt
M12×1.25
2
120±5
——
——
——
25
Inlet cam phaser cap-inlet cam
phaser
Hexagon bolt
1
30
——
——
——
26
Exhaust cam phaser cap-exhaust
cam phaser
Inner TORX bolt
1
30
——
——
——
27
Oil filter assembly-oil filter seat
Screw sleeve
M20×1.5
1
25±3
——
——
——
29
Oil filter joint
M20×1.5
1
25±3
——
——
——
30
Oil filter seat-cylinder block
Inner hexagonal bolt
M8×25
3
20+5
——
——
——
31
Oil pressure switch-oil filter
M14×1.25×12
(13×13)
1
12±2
——
——
——
32
Thermostat assembly-cylinder
head
Hexagon bolt
M6×60
3
8+3
——
——
——
33
Thermostat cover-thermostat
case
Hexagonal flange bolt
M6×20
4
8+3
——
——
——
34
Coolant senser-thermostat shell
M12×1.5
1
20+5
——
——
——
35
Crankshaft timing
gear-crankshaft
Hexagonal flange bolt
M13×1.5
1
——
130±10
65±5
——
36
Crankshaft pulley-crankshaft
timing gear
Hexagonal flange bolt
M8×1×15
6
——
25±5
30±5
——
37
Flywheel-crankshaft
Hexagonal flange bolt
M8×1.25
8
——
15±5
30±5
——
38
Signal wheel-flywheel
Hexagon bolt
M8×1.25
6
8±2
——
——
——
39
Timing belt-tensioner
assembly-cylinder block
Hexagonal flange bolt
M8×55
1
27±3
——
——
——
40
Timing belt-idler
assembly-cylinder head
Hexagonal flange bolt
M10×60
1
40+5
——
——
——
41
Bulkhead-crankshaft locating
pin hole
Hexagonal flange bolt
M16×1.5
1
25±3
——
——
——
Multiple steps tightening (torque +
angle)
No.
Connection part
Part name
Bolt
(thread specification)
Number
of bolts/
gaskets
(piece)
Tightening
torque
Nm (primary
tightening)
First step
tightening
torque (Nm)
Second step
angle (°)
Third step
angle (°)
42
Front lower cover of timing
gear-engine
Hexagonal flange bolt
M6×24
5
8+3
——
——
——
43
Front upper cover of timing
gear-engine
Inner hexagonal bolt
M6×30
1
8+3
——
——
——
44
Front upper cover of timing
gear-engine
Hexagon bolt
M6×16
4
8+3
——
——
——
45
Air compressor
bracket-cylinder block
Hexagonal flange bolt
M8×25
1
10+3
——
——
——
46
Air compressor bracket-cylinder
block
Hexagonal flange bolt
M8×65
3
30+3
——
——
——
47
Power steering pump-steering
pump bracket
Hexagonal flange bolt
M8×125
1
20+5
——
——
——
48
Power steering pump-steering
pump bracket
Hexagonal flange bolt
M8×25
1
20+5
——
——
——
49
Power steering pump-steering
pump bracket
Hexagonal flange bolt
M8×80
1
20+5
——
——
——
50
A/C compressor assembly-air
compressor bracket
Hexagonal flange bolt
M8×100
1
20+5
——
——
——
51
Air compressor assembly-air
compressor bracket
Hexagonal flange bolt 1
M8×30
1
20+5
——
——
——
52
Generator assembly-generator
bracket
Hexagonal flange bolt
M10×90
1
30+5
——
——
——
53
Generator lower
bracket-cylinder block
Hexagonal flange bolt
M10×45
2
40+5
——
——
——
54
Ignition coil assembly-bracket
Hexagon bolt
M6×1×50
4
8+3
——
——
——
55
Spark plug-cylinder head
Hexagon bolt
M14×1.25
4
30+3
——
——
——
56
Intake manifold-cylinder head
Stud bolt
M6×1×25
9
3+2
——
——
——
57
Intake manifold-cylinder head
Hexagon nut
M6
9
8+3
——
——
——
58
Delivery pipe assembly-air
intake pipe
Hexagonal flange bolt
M6×20
2
8+3
——
——
——
59
Throttle body assembly-air
intake pipe
Hexagon bolt
M6×1×50
4
8+3
——
——
——
60
Bracket-air intake pipe
Hexagon bolt
M8×30
2
20+5
——
——
——
61
Bracket-air intake pipe
Hexagonal flange bolt
M8×40
2
20+5
——
——
——
62
Engine oil dipstick tube-air
compressor bracket
Inner hexagonal bolt
M6×16
1
8+3
——
——
——
63
Engine oil dipstick
tube-framework
Hexagon bolt
M6×16
1
8+3
——
——
——
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