Chery S11 / Chery QQ. Manual - part 220

                         

SQR7080  Maintenance Manual           372 Engine Mechanical System 

 
 

 

a) Work out the differences of the measured values. If it 

is above the specified limits, the throttle or the guiding 
pipe must be replaced. 

 

[Attention]  The measurement points are shown as the 
figure. Work out the clearance of the final torn and worn 
section 

Item Standard 

Limit 

Valve guide 

inside 

diameter(mm) 

φ5.0

 

___ 

Valve stem 

outside diameter 

(mm) 

φ5.0 ___ 

IN 

0.056～

0.020mm 

0.07 

Spacing 

(mm) 

EX

0.066～

0.030mm 

0.08 

 

 

(2) Replacement of valve guide 

a)  Heat the cylinder cover to 80—100 degrees C 

with hot water 

b)  Use special tools to drive in the valve guiding 

pipe to the position as shown in the right figure 
from the side of the combustion chamber. 

[Attention] The removed guiding pipe cannot be 
used repeatedly. The air intake and exhaust valve 
guiding pipes should not be mixed up in installation. 

 

 

c)  Use special tools to drive in the new vlve guiding 

pipe    to the position as shown in the right figure.

[Attention]  In the process of driving in the guiding 
pipe into the cylinder cover, the operation should be 
carried out slowly until the pipe gets to the proper 
position. No excessive driving should be exerted. Pay 
attention to the specifications in the operation. 

Measure point

SST 

SST 

 

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SQR7080  Maintenance Manual           372 Engine Mechanical System 

 

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EF 

           

Modle 

Item 

GL,ZL,RL,GS,ZS 

IN 13.71±0.25 

Height（mm）

EX 12.11±0.25 

Driving in depth of throttle guiding pipe 

Use reamer to grind the inner diameter to achieve the 

standard value of the clearing. 

 

 
(3) Valve mating surface 

a)  Smear thin layer of red lead powder on the valve 

mating surface. Do not turn the valve, and gently 
drive it in. Check the mating condition and the 
width of mating line. 

 

 

Correction of valve base stand ring 
[Attention] Signs of breaking or cracking should not 
appear on the correction surface. Take it out slowly after 
the correction is completed. 

 

1、Use a 45 degree cone as the mating benchmark value.
2、Check the mating position of the throttle. If it is in the 
center of the valve, the position is the best one. If not, 
proper corrections have to be made. 
3、Make conic cutting at the center of the mating position 
with 70 degrees toward inwards and 30 degrees outwards.
 

                         

SQR7080  Maintenance Manual           372 Engine Mechanical System 

 

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4 Use polishing agent to grind and polish the throttle 
sealing. 
 

 

 

4-5 Assemble of cylinder head 
4-5-1 Cylinder head 

Pay attention to the following instructions in the 

process of assembling for the other accessories on the 
cyliner cover. 
  (1) Spark plug insulator 
1 Put the spark plug insulator in the corresponding hole 
on the cylinder headwith special use auxiliary tools,smear 
fluid sealant before pressing,pressing height is shown as 
the illustration: 

Attention· Pay attention that the vertical degree of its 

pressing depth and the cylinder head top surface; 

· The insulator should not be deformed while being 

pressed;otherwise,it is easy for the valve chamber cover 
cap to lea 

 

4-6 Installation 
1. Installation of valve spring washer and valve oil 
sealing 
  (1) Cover auxiliary tools on the valve rod head,smear oil 
on the outer circle of the auxiliary roundness and inside 
of new valve oil seal,install it on the illustrated 
position,pull out the auxiliary tools of valve oil seal. 
[Reference] Insert the oil sealing up to the dimension as 
shown in the right figure. 

 

2 Installation of IN and EX 
3 Assembling of valve springs 

Attention   It is for you to distinguish the different 

suppliers by means of paintings on the valve spring,valve 
spring of same engine should have the same 
idenhtification paint marking. 

Spark plug 
insulator 

Sub stool 

valve 

Oil sealing

Spring bottom
plate 

Mark

                         

SQR7080  Maintenance Manual           372 Engine Mechanical System 

 

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4 Install the locking blocks for the valve spring stands.   

Warning 

·Protective eye glasses must be worn in the process of this 
operation to protect the eyes. 
·Beware of the flying spring and other objects 
  Upon completion of the installation of the throttle 
springs and throttle spring stands, use special tools to 
install the locking blocks for the throttle spring stands. 
 

 

 

 
3 Installation of the throttle thrusting rod and throttle 
spacing by adjusting the separation cushions 
4 Install the cylinder cover base, make identification of 
the marks for the front and rear directions. 
1.  Assmbling of dustproof sealing strip and cylinder 

cover  

(1) Apply lubricating oil at the threads and grooves 

of the bolts. 

 

 

b)The tightening of the cylinder bolts should follow 
the sequence as shown in the right figure. The 
tightening is to be carried out in 2—3 operations till 
the torque meets the specifications. The torque for the 
first tightening operation is 30±2N.m; the torque for 
the second tightening operation is 50±3N.m; and the 
torque for the third tightening operation is 70±3.5 
N.m. 

 

.  ○

1  Installation of the spark plug 

[Torque] 20±1Nm 
 

 
Attention: The tools should be placed vertically,so as not 
to make the spark plug insulator become 
deformed,otherwise it is easy to leak oil. 

SST 

Apply oil position