Chery S11 / Chery QQ. Manual — part 49

Chery QQ Service Manual

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Performance test

Caution: Each test should be finished in 3 ～ 5

seconds in order to avoid damaging coil.

Attraction test

Connect test wire according to the figure. Check

whether the pinion (overspeed clutch) bounce out. If

don’t bounce out, please replace magnet switch.

Caution: Disconnect the excitation coil wire at the connection post M before the test.

Retention test:

When connect wire according to state above, disconnect the

negative wire at the connection post M and check whether

pinion keep holding out, if not, please replace magnet switch.

Pinion (plunger) return test

As the second step of above content, disconnect negative wire,

check whether the pinion return to original position rapidly.

Empty load performance test

Connect test wire according to the figure，and check whether

the starter motor can run normally when the pinion hold out.

Meanwhile, check whether the indication current exceeds

stated value.

Empty load current: The current is less than 55A when the

battery voltage is 11V.

Battery

Remove the wire

Chery QQ Service Manual

Starter technical data

Voltage 12V

Output power

0.8 KW

Start time

30 s

Rotation direction

See from pinion side clockwise

Brush length

19 ㎜（0.650in）

Number of teeth of start pinion

9

Characteristic

Condition

Ensure

Empty load

11V

Below 55A，above 5000 r/m

Load

9.5V

0.7Kg·m

Below 270A，above 1200 r/m

Temperature

20℃（68℉）

Braking 7.7V

Below 600A，above 1.3kg·m

（94 pound/feet）

Magnet switch working voltage

Above 8V

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Chery QQ Service Manual

Charging System

Chapter 2 Charging System

Section 1 Battery

. General Information

Ⅰ

In the electric system, the battery has three functions. First of all, it is the energy

source of starting engine and the car; Secondly, it acts as the voltage regulator of

electric appliance system; Thirdly, when the load of electric appliance exceeds the

output of generator, it can provide supplementary energy source for some time.

If the test result of the battery is good, but it is not satisfying during the use, it may

result from the following factors:

1. The ancillary equipment keeps active.

2. The average traveling speed of the car keeps low for a long time.

3. The load of the electric appliance exceeds the output of generator, in particular

while the additional equipment is added to the original configuration.

4. The charging system doesn’t run well, e.g. resistance is too high, driving belt skids,

the terminal post on the output end of the engine gets loose, generator or voltage

regulator falls into malfunction.

5. The battery, including cable terminal post of it, has impurity on it, or it is not

fastened, or the holding-down device of battery gets loose.

6. The electrical equipment has such mechanic problems as brittle failure or pinch-off

of wire etc.

Visual Inspection

Check for obvious damage, such as cracking or breaking of shell and cover, which

may cause the efflux of electrolyte. If such obvious damage exists, the battery should

be replaced immediately. After the reason for such damage is found out, some

modification should be made, if it is necessary. If the reason keeps unknown, further

experiment shall be made to conduct further study.

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Chery QQ Service Manual

Charging System

Carrier and holding-down clamp

Before the battery is installed, the carrier and holding-down device should be

cleaned. And they should be prevented from corrosion. The carrier should maintain a

good status. Ensure that no other materials are on the carrier before the battery is

installed. In order to prevent the battery from swinging in the carrier, the packing bolts

should be reasonably tightened.

Sulfation

If the battery discharges for a long time, the lead sulfate will gradually become a kind

of hard crystalline material, which doesn’t tend to return to active material during the

subsequent recharging. “Sulfation” just means such result and reaction process. This

kind of battery can be recovered by means of slow charging. It can be recovered to the

work level, however, its capacity is lower than before.

Solidification of electrolyte

The solidifying point of electrolyte is related to its specific density. The solidification

may damage the battery, so it should be prevented from solidification by means of

keeping full of charge. If the battery is frozen accidentally, it can’t be charged before

it warms up.

Maintenance of battery

1）Battery is a reliable component, but it needs regular maintenance. Keep the carrier

of battery clean, prevent the terminal post from corrosion, and make the electrolyte

level maximal. In addition, the liquid level of each unit should be basically equal.

2）Keep the cable plugging device of battery clean.

The cable plugging device, especially the positive terminal, is sure to become rusty.

The rust on the fitting surface of conductor will hinder the circulation of electric

current. It is usually because of the rust on the cable plugging device of battery that

the engine can’t be started, while the electromotor is activated. Regularly cleaning it

and lubricating the plugging device may prevent them from corrosion.

. In

Ⅱ

-Vehicle Maintenance (“jumping” start in case of

emergency)

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