Chery B11. Manual — part 56

Maintenance Manual for Chery·Oriental Son

Engine Section

Check

Piston ring

(1) Check if there’s damage, excessive wear and

breach on piston ring. If any, replace it. If

replacing piston, it is necessary to replace

piston ring.

(2) Check clearance between piston ring and piston

ring groove. If it’s too wide, replace piston ring

or both of them.

Standard value： 0.02～0.06mm
Limit value： 0.1mm

press in with piston

(3) Put piston ring into cylinder. After using top

surface of piston to put it away, measure open

clearance with clearance gauge. When open

clearance is too wide, replace piston ring.

Standard value：

No.1 ring…0.25～0.35mm

No.2 ring…0.40～0.55mm
Oil control ring…0.10～0.40mm
Limit value：

No.1 ring and No.1 ring…0.8mm

Oil control ring…1.0mm

Oil clearance of crank pin (Plastigauge )

(1) Clean the oil on connecting rod neck and

bearing out.

(2) Divide plastigauge into the same length of

rearing width and put it on crank pin and make

it parallel to axle center line.

(3) Install connecting rod cap carefully, and screw

nuts on according to the regulated torque.

(4) Disassemble connecting rod cap carefully.

(5) Use measuring rule imprinted on the package of

plastigauge to measure the width of the widest

part of staved plastic line and get clearance

value.

Standard value：0.02～0.05mm
Limit value：0.1mm

open clearance

piston ring

plastigauge

2 、

Crankshaft, cylinder block and

flywheel

Daub engine oil on

all the operation

parts when

installing.

6

9

8

16

8.8N.m

7

19

15

18

14

20

13

17

12

11

Disassembling
illustration

10

o

to10

0

o

25N.m+90

2.5kgf.m

Disassembling steps

11.

Main bearing cap

12.

Lower bearing of crankshaft

13.

Crankshaft

14.

Upper bearing of crankshaft

15.

Crankshaft thrust rearing

16.

Cylinder block

17.

Drive board〈A/T〉

18.

Crankshaft sleeve〈A/T〉

18.

Jointing board〈A/T〉

19.

Driving board bolt

〈A/T〉

1.

Screw rearing of flywheel<M/T>

2.

Jointing board<M/T>

3.

Flexible flywheel<M/T>

4.

Jointing board<M/T>

5.

Crankshaft bushing<M/T>

6.

Rear cover board

7. Bell

housing

8.

Rear oil seal cap

9.

Rear oil seal

10.

Main bearing cap bolt

Check

Oil clearance of crankshaft
(Plastigauge )

(1) Clean the oil on main journal

and internal diameter of bearing
out.

(2) Install

crankshaft.

(3) Divide plastigauge into the

same length of bearing width and
put it on crankshaft journal and
make it parallel to axle center line.

plastigaug

e

(4) Install main bearing cap carefully,

and screw nuts on according to the
regulated torque.

(5) Disassemble main bearing cap

carefully.

(6) Use measuring rule imprinted on the

package of plastigauge to measure
the width of the widest part of
staved plastic line and get clearance
value.
Standard value：0.02～0.04mm
Limit value：0.1mm

Cylinder block
(1) Observe if there are defects like

scratch, rust and corrosion with eyes.
Use defect detector to check breach.
If any, fix or replace it.

(2) Check if the surface of cylinder

block warps and assure there’s no
pad scraps or other foreign matters.
Standard value：0.05mm
Limit value：0.1mm

(3) If warping excessively, revise or

replace it within the permitting
range.
Abrasive limit：0.2mm
Maximum sum of abrasive
thickness of cylinder block and
cylinder cap permitted is o.2mm.
Height of cylinder block(new):
4G63 284mm, 4G64 290mm

(4) Check if there’s scratch and cylinder

sticking. If it’s disqualified, revise
(increase the size) or replace it.

(5) Check internal diameter of cylinder

and cylindricality with cylinder bore
gauge.

Revise cylinder according to increased
diameter, replace piston and piston ring if
wearing badly. Checking position as shown.

Standard value：
internal diameter of cylinder
4G63 85.00～85.03mm

4G64 86.50～86.53MM

Cylindricality：≤0.01mm

12mm

center

bottom

Cylinder reboring
(1) Choose diameter of piston

increased according to the
maximum cylinder bore.

Identification of piston sizes
Size Identification

mark

Increase 0.50

0.50

Increase 1.00

1.00

Note: Imprint size marks on the top of
piston
(2) External diameter of piston used in

the measurement should be
measured in the thrust direction as
shown.

(3) According to measuring value of

external diameter of piston, calculate
the size of cylinder reboring.

size of cylinder reboring ＝ external

diameter of piston ＋
(clearance between piston
and cylinder)

－

0.02mm(Abrasive
capacity)

thrust

direction

Piston external

diameter

(4) Rebore every cylinder bore to size

of cylinder reboring
Notice:
·When boring out cylinder, process

according to the following
procedures to avoid errors
because of temperature
raising :No.2→No.4→No.1→No.3

(5) Cylinder bore which is abrasive to

the ultimate. (diameter of piston＋
clearance between piston and
cylinder)

(6) Check clearance between piston and

cylinder
Standard value：0.02～0.04mm

Remarks: When boring out cylinder, four
cylinders should be bored in the same
size which is increased, instead of only
bore one cylinder.

Installation notice

Installation of crankshaft bearing
(1) Choose bearings that conform to

crankshaft main journal according to
the following table.

Combination of crankshaft main journal and

spindle bore

Crankshaft main journal

G

ro

u

p

s

Identification

color

External

diameter

(mm)

Identification

mark of

spindle bore

Identification

mark and color of

No. 1, 2, 4, 5

journal bearing

Identification

mark and

color of No.

3 journal

bearing

0 1、green 0、black

1 2、yellow 1、green

Ⅰ

Yellow

56.994－

57.000

2 3、nil 2、yellow

0 2、yellow 1、green

1 3、nil 2、yellow

Ⅱ

Nil

56.988－

56.994

2 4、blue 3、nil

0 3、nil 2、yellow

1 4、blue 3、nil

Ⅲ

White

56.982－

56.988

2 5、red 4、blue