Chery S11 / Chery QQ. Manual - part 53

                       

Chery QQ Service Manual     

Charging System 

12. Remove 4 bolts and baffle and push out the bearing on the driving end. 

 

13. If necessary, loosen stud bolts and pull out the stator. 

Note: Heating the frame on the driving end may facilitate disassembling stator. 

 

Assembling 

Before disassembling，evaluate the faults. After that, find out the part subject to 

malfunction by means of careful check. Make available the parts for exchange use, 

and then assemble the generator in the step contrary to that of disassembling. 

Note: 

（

1）When the stator coil is inserted into the frame on the driving end, the recess in 

the stator should be aligned with the stud bolts. 

（

2）When the brush carrier assembly is installed, the brush mush be thoroughly 

disengaged from slip ring. 

 

 

Note:  

When the rectifier is installed, check whether there is an enough big gap between 

※

stator conductor and cooling fan blade.   

Avoid over

※

-tightening the insulator nuts of terminal post. 

 
   

Tightening torque of stud bolt: 7～8.8N.m,  

Tightening torque of frame bolt/nut and nut in the terminal post: 4～5N.m 

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Chery QQ Service Manual     

Charging System 

Tightening torque of belt pulley nut: 95～130N.m 

 

Check and Adjustment 

Rotor ground 

The slip ring and rotor core should be conductively closed, 

which should be checked by means of ohmmeter. 
 

Open circuit 

Connect the ohmmeter probe to the slip ring to check whether 

the exciting coil is current-carrying and its electric resistance value. If the value 

exceeds the specified one, replace the rotor. 

The electric resistance value of exciting coil:   

2.8-3.0Ω 

Fan 

The status of all the fan blades is good. 

Bearing 

Check whether it rotates stably using hand. 

Bearing of drive shaft 

Before removeing it, rotate it with hand to see whether it rotates stably. 

Stator Ground 

Check the stator coil and magnetic core for insulation 

with ohmmeter. 

Open circuit 

Check whether it is conductive between neutral point A 

and leg of circuit B. 

Rectifier 

With kΩohmmeter, check whether it is 

conduction between B terminal post and earth 

connection. Put one probe on B terminal post, 

and the other on the earth connection. And then 

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Chery QQ Service Manual     

Charging System 

exchange the places of the two probes. Only one should be conductive, the other 

should be infinite. Otherwise, replace the rectifier assembly. 
 

Note: 

Never use a 500V megohmmeter to test the rectifier, because it may damage 

the diode of the rectifier. 

 
 

Condenser 

Use a capacitance measuring tester to check 

the capacitor state. 

Condenser capacitance: 0.15µF. 
 
 
 
 
 
 

Brush 

Refer to the chart to measure the length of the 

brush, and check its worn condition. If its 

length has reached the maintenance limit 

value, it should be replaced, together with the 

brush. 

Maintenance limit value of brush length (min.):    4.5mm（0.18in） 

. Technical Data of Generator

Ⅳ

 

 

Rated voltage 

12V 

Maximal output 

50A（thermal state 13.5V） 

Maximal tolerable speed 

18.000r/min 

No-load speed 

1110 r/min 

Set voltage 

14.2 to14.8V 

（

5000 r/min） 

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Chery QQ Service Manual     

Charging System 

10A25℃（77℉） 

Tolerable ambient temperature 

-30 to 90℃ 

-22 to 194℉ 

Polarity Minus 

ground 

Rotation direction 

Clockwise, seeing from belt pulley 

 
 

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