Chery QQ - Page 336

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
- 29 -