Chery Amulet Engine. Manual — part 9

——Tighten four M6 bolts to
8.0 —11.0Nm。
——Remove the plastic piece.










【11】. Removal and installation

crankshaft, crankshaft thrust washer, halves and main bearing cap

Removal：
——Before removing, check the end play of crankshaft first.
Use the plunger of dial indicator to contact bearing face of the crankshaft
(lightly compressing).

Push the crankshaft away from the contacting tip. Adjust dial

indicator to zero and then use post to push the crankshaft towards
contacting tip as much as possible. Check dial indicator. The reading is
end play. The end play of the crankshaft should be 0.092—0.303mm.

If dial indicator is not available, the end play of the crankshaft

may be checked by feeler leaf. Between the third main bearing cap and
crankshaft, it should be checked by feeler leaf (push and pull
crankshaft)。
——Loosen main bearing bolt and stud，(start with the middle bearing
cap), take out the bolt and stud, remove main bearing cap and the other
shell of main bearing bushings. The other shell of main bearing bushing
is still kept in main bearing cap.
——Remove the crankshaft.
——Remove the thrust plates of crankshaft (two pieces) from the
cylinder block.
Check：
——Check main journal and main bearing bushing clearance.

Clean the main journal of crankshaft, inner bore of main bearing

cap and main bearing bushings with non-woven. Put plastic
clearance gauge on the main journal paralleling with the generatrix of
main journal. Its length should be a little shorter than the width of main
journal.

Note: Don’t rotate the crankshaft!

Mount the main bearing cap. Screw the bolt of main bearing cap

by hand. Tighten to 90—100Nm. Don't rotate the crankshaft.

Remove main bearing bolt. Take out the main bearing cap

Fig.63

Fig. 64

Sealing plate

M6 bolt×20（4）
Tighten torque 8~11Nm

Fig.62

carefully. Arrange them according to the sequence. Read the bearing clearance
according to the proportion stated in the cover of plastic clearance gauge.
Check the bearing clearance from the third main bearing and extending to the
two sides. The clearance of main bearing is 0.011—0.058m m.
——Check clearance of connecting rod bearing

Use the above method to check clearance of connecting rod bearing.

Clearance of connecting rod bearing is 0.006—0.06mm.

——The size of connecting rod journal and connecting rod
bushing： Unit：mm

——The size of main journal and main bearing half：

Unit：mm

Level

The diameter of connecting

rod journalφ

The thickness of

connecting rod

bushing

Standard

47.89—47.91

1.480—1.487

Undersize 0.025

47.89—47.91

1.492—1.499

Undersize 0.25

47.64—47.66

1.605—1.612

Undersize 0.5

47.39—47.41

1.730—1.737

Undersize 0.75

47.14—47.16

1.855—1.862

Undersize 1.0

46.89—46.91

1.980—1.987

Level

The diameter.

of main

journal

The diameter of

main bearing bore

of cylinder body

The thickness

of main

bearing half

shell

Standard

57.98—58.00

62.2935±0.0065

2.131—2.138

Oversize 0.4

57.98—58.00

62.6935±0.0065

2.331—2.338

Undersize

0.002

57.98—58.00

62.2935±0.0065

2.141—2.148

Undersize 0.25 57.73—57.75

62.2935±0.0065

2.256—2.263

Undersize 0.50 57.48—57.50

62.2935±0.0065

2.381—2.388

Undersize0.75

57.23—57.25

62.2935±0.0065

2.506—2.513

Undersize 0.25

Oversize 0.4

57.73—57.75

62.6935±0.0065

2.456—2.463

Undersize 0.50

Oversize 0.4

57.48—57.50

62.6935±0.0065

2.581—2.588

Undersize 0.75

Oversize 0.4

57.23—57.25

62.6935±0.0065

2.706—2.713

Fig.65

Fig. 66

Fig. 67

—the size of crankshaft thrust, thrust washer and cylinder block
thrust： Unit：mm

Installation：
——Before installation, use the second screw tap taps the threaded
hole in cylinder body, especially the threaded hole of cylinder head
bolt and main bearing bolt.

The threads of cylinder head bolt is M10×1.5—6H，the threaded

hole of main bearing bolt is M12×1.75—6H。
——The installation of crankshaft woodruff key

Drive the semicircular key into key groove lightly. The

magnitude of interference for key and key groove is 0.00—0.051mm。
After the semicircular key is installed, check the protrusion height. It
should be 1.392—1.739mm.
——Crankshaft thrust washers are two pieces. They are only installed
on the front and back thrust surface of cylinder block.

Before installation, apply the engine oil on the surface with oil

groove of thrust washer. Position the surface with oil groove towards
the cylinder body and the surface with oil groove towards crankshaft.
——During installing crankshaft, engine oil should be applied main
journal, connecting rod journal, thrust surface and bearing half.
——The character like 1,2,3,4,5 are casted on the top of main bearing
cap and also an arrow. During assembling, install them from the front
according to the sequence. At the same time, have the arrow pointing
to the front end surface of cylinder block. The width of main bearing
cap 1,2,4,5 is same, but the width of main bearing cap 3 is larger than
others.

The main bearing cap is retained by rabbet. It is press fit between

rabbet and cylinder body. The press fit clearance is 0.025—0.145mm.
After installation, the surface of the first and the fifth main bearing
caps should be even or lower than the front and back end surface of
cylinder body.

Level

The size of
cylinder body
thrust

The

size

of

crankshaft thrust

The thickness of
thrust washer

Standard

24±0.03

28.825—28.875

2.326±0.025

Oversize
0.38

24±0.03

29.205—29.255

2.516±0.025

T

w

o

t

h

ru

st

p

ie

ce

s

Fig. 68

——Nine main bearing bolts are hex head flange side bolts, and one is stud.
For horizontal engine, the stud is mounted in the left threaded hole of the
second main bearing cap (see from the front) which is for installing the
carrier of oil collector. For the vertical engine, it should be mounted on the
left threaded hole of the forth main bearing cap (see from the front).

Before installing the main bearing bolt, engine oil should be applied on

the joint surface of head end.

The main bearing bolt and stud should be screwed by hand first and

tightened to 90—100Nm.
——The max rotating torque of the crankshaft (with piston rod assembly) is
16Nm.

【12】. The removal and installation of oil baffle assembly

Removal：
——Take out the oil baffle assembly
from the right of the back end of the
cylinder body.

Installation：

——Install the oil baffle assembly from
the right of the back end of the cylinder
body (viewed from the front). The oil
baffle assembly should be tensioned. The
spring should be lower than the flange
surface of cylinder block oil pan.

Fig. 69

Fig. 70