Content .. 79 80 81 82 ..

Chery Tiggo T11 LHD. Manual - part 81

Service Manual for Chery·Tiggo (T11) Engine Section

Piston and Connecting Rod Component Installation

(1) Daub enough engine oil on piston, compression

ring and oil control ring.

(2) Adjust open position of compression ring and

oil control ring (blade and main ring) to the
position as shown.

(3) Rotate crankshaft to make crank pin located in

the middle of cylinder

(4) Before inserting piston and connecting rod

component into cylinder, proper screw-mounted
protector is applied in connecting rod bolt. Be
careful and don’t damage crank pin.

(5) Use suitable piston ring compressor to insert

piston and connecting rod component into
cylinder.

Caution:

·There’s a forward mark on the top of piston,

make it point to straight position of the
engine (the side of timing belt).

Connecting Rod Bearing Installation
If  it  is  necessary  to  replace  bearing,  choose  and
install bearing according to the following steps.
(1)  Measure  external  diameter  of  crank  pin  and

confirm the groups according to the following
table.

crankshaft

for

maintenance,

distinguish sizes by painting color in the
position as shown.

(2) Identification mark of connecting rod bearing is

imprinted in the position as shown.

Crank pin

Connecting rod bearing

Groups

Identification

color

External

diameter

(mm)

Identification

mark

Identification

color

Thickness

(mm)

Ⅰ

Yellow

44.995～

45.000

Yellow

1.487～

1.491

Ⅱ

Nil

44.985～

44.995

Nil

1.491～

1.495

Ⅲ

White

44.980～

44.985

Blue

1.495～

1.499

Internal diameter of connecting rod：48.000～48.015mm

(3) Choose bearing in the table above, according to

groups assured in (1) and (2).
Examples for choosing bearing:
If measurement value of external diameter of
crankshaft pin is 44.996mm , it shall be Group 1
in  the  table  above.  If  replacing  crankshaft  of
maintenance,  check  identification  color  applied
on new crankshaft pin. If it’s yellow, crankshaft
pin shall be Group 1 and choose connecting rod
bearing of which identification mark is 1.

Direction

mark

Timing belt

side

Side of the
crankshaft
pulley

R2 open and

main

ring

open

Upper blade

Lower blade

Piston pin

identification

mark

Service Manual for Chery·Tiggo (T11) Engine Section

Installation of Connecting Rod Cap
(1) When installing connecting rod cap, check

marks of disassembling. If installing new
parts which have no marks, install
anti-rotating gap as shown on one side.

(2) Ensure if axial clearance of big end of

connecting rod is suitable.
Standard value：0.10～0.25mm
Limit value：0.4mm

Connecting Rod Nut Installation
Caution:
 Before installing connecting rod cap,

disassemble

spark

plug

and

install

connecting rod nut, if having installed
cylinder cap.

(1) As for connecting rod nut and bearing,

plastic-zone  screw-on  method  shall  be
adopted.  Before  reusing  the  bearing,  check  if
the  bearing  is  expanded.  Checking  method:
screw  nuts  into  screw  thread  of  bearing  with
fingers till the whole length of screw thread. If
nuts  can’t  be  screwed  on  smoothly,  screw
thread  may  be  expanded  and  bearing  should
be replaced.

(2) Before screwing nuts on, daub oil on screw

thread of nuts and seat surface.

(3) Screw nuts into bearing with fingers and

screw nuts on alternatively to install
connecting rod cap correctly.

(4)  Screw nuts on by torque of 20N.M.
(5)  Daub paint mark on every nut head.
(6)  Daub  paint  mark  on  bolts  of  which  the

position is from paint mark on every nut
head to screwing direction of90～100°and
note down the paint mark.

(7) Screw nuts on from 90～100°until marks

on nuts and bearing are aligned.
Caution:
 If screwing angle is less than 90°,

screwing specified capability can’t
be assured. When screwing it on,
notice screwing angle.

 If screwing nuts are excessively

tightened (exceed angle of 100°) ,
screw nuts off totally. And restart to
screw nuts from step 1

油漆
标记

油漆标记

cylinder

number

anti-rotating

gap

paint mark

paint

mark

Service Manual for Chery·Tiggo (T11) 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

(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

press in with piston

open clearance

piston ring

plastigauge

2 、

Crankshaft, cylinder block and

flywheel

Disassembling steps

Screw rearing of flywheel<M/T>

Jointing board<M/T>

Flexible flywheel<M/T>

Jointing board<M/T>

Crankshaft bushing<M/T>

Rear cover board

Bell housing

Rear oil seal cap

Rear oil seal

10.

Main bearing cap bolt

Daub engine oil on

all the operation

parts

when

installing.

8.8N.m

25N.m+90

to10

Disassembling
illustration

2.5kgf.m

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〉

Content .. 79 80 81 82 ..