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Chery S11 / Chery QQ. Manual - part 26

Chery QQ Service Manual Chassis System

24. Check brake pedal vibration and
stroke.

If brake pedal is felt stable and

the stroke does not exceed
specified value, go to step 25.

If brake pedal is felt soft and

the stroke exceeds specified
value, don’t drive vehicle and
go to step 26.

25. Start engine and check the pedal.

If the pedal is felt stable, go to

step 27.

If the pedal is felt soft, don’t

drive vehicle and got to step 26
again.

26. Make sure that the bad feeling of
the pedal and the bad stroke are not
caused by bad adjusting for friction
line or other mechanical malfunction.
Repeat draining out air process for
brake system and go to step 1 again.
Warning: Don’t move vehicle before
the  brake  pedal  is  not  stable.
Otherwise it will cause accident or
personal hurt.
27. Test vehicle on road at middle
speed to brake vehicle (without ABS)
in  order  to  make  sure  that  brake
system is normal.

2)Braking system hand work exhaust
procedure
p down brake pedal when draining air
for system.
Points of attention：Make sure that
the bad feeling of the pedal and the
bad stroke are not caused by bad
adjusting for friction line or other
mechanical malfunction. Repeat
draining out air process for brake
system and go to step 1 again.
1.Check the level of fluid and fill
fluid to correct level if necessary.
2. Slowly open one of brake pipe
connector on ABS regulator to pour
into the fluid.
3. Step down the pedal to 75% of whole
stroke and keep a period of time.
4. When no any bubbles in the fluid,
close brake connector on ABS
regulator
Fixture
N.m。Screw brake pipe connector on ABS
regulator to 16N.m.
5.  For other connector, repeat step
2 to step 4.

Chery QQ Service Manual Chassis System

6.  Check and fill fluid to suitable
level.
7. Lift and support vehicle.
8.  Install transparent plastic hose
to right rear valve.
9.  Put  other  end  of  hose  into  the
container with clean fluid.
10. Step down the pedal for several
times and keep step down. Loosen the
valve.
11. When the valve does not drain out
fluid, close the valve.
12. Repeat step 10 and step 11 until
no any bubbles in brake pipe.
13. Step down the pedal and keep on
to screw the valve.

6、Hydraulic braking system

rinse

1)Pressure rinse
Warning: Only use clean OPEL DOT 4
fluid in sealed container. Don’t use
polluted fluid, otherwise it will
cause damage to parts, bad brake or
personal hurt.
Warning: Don’t fill fluid too much.
It will flow out to engine exhaust
parts to result fire.
Attention：The compressed air
draining unit can be used to resin
system. The compressed air must be
clean and dry. Prevent wet air or
other dirt to pollute system.

Exhaust operation ( II )

1.  Clear fluid reservoir cover and
neighbor parts.
2.  Remove the cover.
3.  Drain out any fluid in the
reservoir.
4.  Use clean brake fluid to fill the
reservoir to suitable level.
5.  Use connector 1 to connect
draining unit and reservoir
Connection..
6. Apply pressure to system.
7. Support and lift vehicle.

Chery QQ Service Manual Chassis System

8. Resin the brake according to
following steps.

Right rear
Left rear
Right front
Left front

9. Install transparent plastic hose
to right rear valve.
10. Put other end of hose into the
container with clean fluid.
11. Slowly open the valve to flow out
fluid.
12. Close the valve when no bubbles
appear. fix the valve to 8 N.m.

Remove exhaust valve socket

14. If imperatively replace as
follows all rubber parts.

Brake hose assembly.
Master brake cylinder rubber

parts.

Brake pliers and brake drum seal.

15. Check the level of fluid and fill
fluid to correct level if necessary.
16、Install reservoir cover.
17. Drain out air in brake system.
Please refer to “ Draining out air
in hydraulic system”.
18. Lower vehicle

2)Hand work rinse
Points of attention：Use suitable
container and cloth to absorber brake
fluid and prevent the fluid to
contact any paint surface.
1. Clear fluid reservoir cover and
neighbor parts.
2. Remove the cover.
3. Drain out any fluid in the
reservoir.
4. Use clean OPEL DOT ４ brake fluid
to fill the reservoir to suitable
level.
5. Install the cover.
6. Lift and support the vehicle.
7. Rinse the brake system according
to following steps:

Right rear
Left rear
Right front
Left front

8. Install transparent plastic hose
to right rear exhaust valve.
9. Put the other end of hose into
container with clean fluid.
10. Slowly open the valve to flow out
fluid.
11. When clean fluid begins to flow
out, close the valve.

Chery QQ Service Manual Chassis System

Fixture
Screw exhaust valve to 8N.m.
12. If imperatively replace as
follows all rubber parts.

Brake hose assembly.
Master brake cylinder rubber

parts.

Brake pliers and brake drum seal.

13.  Drain  out  air  in  the  system.
Please refer to “Drain out air in the
system”.
14. Check the fluid level in the
reservoir. Fill the fluid to correct
level if necessary.
15. Install reservoir cover.
16. Lower vehicle
Check whether leak
1． Connect test pipe with brake
pliers and brake drum.
2． Install pressure gauge to display
the pressure.
3. Repeat step down the pedal hard
to set up 20 Pa pressure.
4.  Install  the  pedal  tensioner
between driver seat and the pedal.
5.  Test  time  is  lasting  about  5
minutes.
6.  If  no  leak  in  the  system,  the
pressure set up will keep constant.
7. If the pressure is dropping, check
if any leak in the system. Drain out
the air in the system.

7、Vacuum actuator replace

Disassembly procedure
1、Remove master cylinder and
prorating valve from vacuum booster.
Points of Attention
Don’t remove brake pipe from master
cylinder and prorating valve.
2、Remove vacuum hose from vacuum
booster.
3、Remove brake light switch
connector. Turn light switch to pull
out.
4、Remove spring pins of brake pedal
and vacuum booster lever and pull out
pins.
Attention：Remove vacuum booster only
the lever and the pedal is
disconnected.

5、Loosen 4 bolts on vacuum booster.
6、Pull out vacuum booster from left
of engine.

Vacuum actuator check
There are two methods for checking
vacuum booster. One is to use tester.
The other is confirming working
condition without tester.
Attention：
Make sure no any air in system during
checking.

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