Chery B11. Manual - part 55

   

Maintenance Manual for Chery·Oriental Son

           

Engine Section

 

           

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 Installation Notice

 

piston

Piston Pin Installation 

(1)  Measure the following sizes of piston, piston 

pin and connecting rod. 

A：Length of inserting piston pin in the hole. 
B：Width of pin sockets 
C：Length of piston pin 
D：Width of small end of connecting rod. 

(2)  Put measured sizes above into following formula 

to calculate L. 

L＝[(A－C)－(B－D)] / 2 

(3)  After inserting compression rod of the special 

tool into piston pin, install pipe A in the top of 

compression rod. 

连杆 

connecting rod

(4)  Install forward marks of piston and connecting 

rod towards the same direction. 

piston

 

 

(5)  Daub engine oil on the external diameter of 

piston pin 

(6) Through 

Pipe A, insert compression rod, 

piston pin and pipe component installed 

according to (3) into piston pin hole from the 

side of forward mark. 

 

3mm+L

(7) 

Screw on guide block B into guide pipe A to 

make clearance value between guide block A 

and guide block B equal to the value of Value L 

got from (3) plus 3mm. 

 

 
 

guide block B 

guide block A 

compression rod

(8)  Keep forward mark of piston upward. Install 

piston and connecting rod component in base 

of piston pin installer. 

piston pin

forward mark

forward mark 

(9)  Force piston Pin in under pressure. When 

the pressure is less than standard value, 

replace piston pin and piston component 

and/or replace connecting rod.  

standard value： 7350～17200N 

 

Guide pipe A

base

Guide block B

   

Maintenance Manual for Chery·Oriental Son

           

Engine Section

 

           

 

 
 
 
 
 

 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(10) Check if piston can rotate freely. 

 

Oil Control Ring Installation 
(1)  Put the main ring of oil control ring into oil 

ring groove.   
Remarks: 
1. There’s no difference of upper and lower 

surface between blade and main ring. 

2. New blade and new main ring shall be 

colorized to distinguish their sizes. 

Size 

Identification color

Standard 

Nil 

Increase 0.50mm

Red 

Increase1.00mm

Yellow 

 

Upper 

blade 

Main 

ring 

(2)  Put upper blade. When installing blade, force 

one side of blade into piston oil ring groove. 
Then force the rest parts of blade into oil ring 
groove with the thumb as shown.       
Expanding blade with ring clamp will break it 
off and make it differed from other piston 
rings. 
Caution： 
Don’t use ring clamp to install blade 

Lower 

blade 

(3)  Install lower blade in accordance with Step 

(2). 

(4) Ensure if blade can turn from the left to the 

right freely after installing blade.  

Installation of No.1 compression ring and 
No.2compression ring 
(1) After installing No.2 compression ring, install 

No.1compression ring with ring clamp. 
Remarks: 
1.There’s the identification mark on the top of 
the ring. 

Identification mark 
No.1 ring……1R 
No.2 ring……2R 

2.When installing piston ring, keep the mark 
upwards and towards the top of piston.   
3.Size marks of piston shown as the following. 

 

 

 

Size 

Size mark 

Standard 

Nil 

Increase 0.50mm 

50 

Increase 1.00mm 

100 

Identification 

mark

“2R” 

Identification 

mark

“1R” 

Direction 

mark

1R 

2R 

Side of the
crankshaft 
pulley 

R2 open and

main ring

open 

blade clearance 

ring clamp

Upper blade

Lower blade 

Piston pin

   

Maintenance Manual for Chery·Oriental Son

           

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   

 

Timing belt

side 

(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). 

Direction 

mark 

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. As 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

1 

Yellow 

1.487～

1.491 

Ⅱ

Nil 

44.985～

44.995

2 

Nil 

1.491～

1.495 

Ⅲ

White 

44.980～

44.985

3 

Blue 

1.495～

1.499 

identification 

mark 

 

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.       

   

Maintenance Manual for Chery·Oriental Son

           

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