Chery Tiggo T11 LHD. Manual — part 82

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.

(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

plastigaug

e

12mm

m

center

bottom

Cylindricality：≤0.01mm

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
(1).External diameter of piston used in the
measurement should be measured in the thrust
direction as shown.
(2).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)
(1) 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
(2) Cylinder bore which is abrasive to the

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

(3) 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

Identification

mark and

color of No. 1,

2, 4, 5 journal

bearing

Identificat

ion mark

and color

of No. 3

journal

bearing

Crankshaft main journal

Identificatio

n

mark of

spindle bore

G

roup
s

Identificati

on color

External

diamete

r

(mm)

Ⅰ

Yellow

56.994－

57.000

0

1、green

0、black

1

2、yellow

1、green

2

3、nil

2、yellow

Ⅱ

Nil

56.988－

56.994

0

2、yellow

1、green

1

3、nil

2、yellow

2

4、blue

3、nil

Ⅲ

White

56.982－

56.988

0

3、nil

2、yellow

1

4、blue

3、nil

2

5、red

4、blue

thrust

direction

Piston external

diameter

Examples for bearings choosing



If identification color of crankshaft
main journal is yellow and identification
mark of spindle bore is “1”, choose the
No.

1,2,4,5

bearing

of

which

identification

mark

is

“2” and

identification color is “yellow” and No.3
bearing of which identification mark is
“1” and identification color is “green”.



If there’s no identification paint color on
crankshaft, measure main journal and
choose corresponding groups of bearing
according to measurement value.

(2) Install bearing with grooves on one

side of cylinder block.

(3) Install bearing without grooves on

one side of main bearing cap.

(4) Install two of thrust bearing of

crankshaft in No. 3 main bearing
hole

of

cylinder

block.

For

convenient installation, apply a little
oil on the surface of thrust bearing.

(5) One side of thrust bearing with

groove

should

face

towards

crankshaft crank arm.

Main bearing cap and main bearing cap
bolt installation
(1) Install arrowhead of main bearing

cap towards the side of timing belt.

(2) Before screwing main bearing cap

bolt on, assure that length of bolts is
less than value limit. If not, replace
the bolt.
Limit value (A)：71.1mm

(3) Daub oil on screw thread of nuts and

seat surface.

(4) Screw main bearing cap bolt on by

torque of 25N.M, according to
regulated order.

Main bearing bore size
identification mark

Cylinder
block bottom

Rear

face

of

cylinder body

Cylinder

inner

diameter size

mark

Main bearing

bore

identification

mark

Crankshaft bearing size identification
mark or color

Identification mark or
color

oil ditch

oil ditch