Chery S11 / Chery QQ. Manual - part 182

Chery QQ Maintenance Manual Chassis System

2. Fix the braking master pump and the
storage tank with screws, and tighten
the screw with a torque of 25±2N.m.
3. Connect the plug of the liquid
level sensorof the storage tank.

4. Refill the braking liquid.
5. Discharge the air inside the br-
aking system, and check to see if
there is any leakage. Refer to the
“Air Discharge of Braking System”
for details.

3） Dismounting and installation of
the braking master pump

I. Dismounting of the master

pump

1. Remove the wire plug of the liquid
level sensor of the storage tank.

2. Take off the outer cover of the

storage tank, and draw out the
remaining braking liquid inside the
tank with a suction tube.

The more thoroughly the discharge of
the braking liquid, the better.

Attention: Watch out for overflow of
braking liquid.
3、Use the oil pipe wrench to loosen
the two oil outlet pipes on the
master pump.
4、Loosen the fastening screw nuts of
the brake master pump and vacuum
actuation pump.
5、Take off the master pump.

Chery QQ Maintenance Manual Chassis System

4）Installation of the braking master
pump
1. Check to see if there are any
damages on the sealing ring at the
joining section of the master pump
and the vacuum actuator pump. Make
proper replacement if the ring is
damaged.

2. Mount the master pump on the vacuum
actuator. Install the proportion
distribution valve stand, with two
fastening screw nuts. Tighten with a
torque of +/- 2N.m.
3. Turn the two braking pipelines a
few threads manually, then tighten
the pipeline with a wrench with a
torque of 14—18N.m.

Attention:

The joints of the braking pipes

must be clean;

First turn the pipelines a few

threads

with

hands

when

connecting the pipes so as to
avoid any possible damage to the
pipe joints.

4. Connect the plug of the liquid
level sensor.

5. Refill the braking liquid.
Discharge the air of the braking
system by referring to the “Air
Discharge for Braking System”.
Check to see if there is any leakage
in the system.

Attention: It is not allowed to use
absorber oil or any liquid containing
mineral oils. It is not allowed to use
the braking liquid contained in the
vessels that once contained mineral

oils or that has been made wet by
water, because the mineral oils might
lead to the expansion or deformation
of the rubber parts in the braking
system, and water will dissolve the
braking liquid, which will reduce the
boiling point of the braking liquid.
To prevent from contaminations,
please screw the liquid storage tank
cover tightly.

It is strictly forbidden to use

mixed braking liquid. It is
recommended to use the DOT-4
Shell-brand braking liquid.

2、Brake pedal replace

1、Removal stop lamp switch plug.
2、Remove the split pin for the brake
pedal and the vacuum actuation pump,
then take of the pin bolt
3. Loose brake pedal shaft lock nut,
from right unsling pedal shaft
4. Removal pedal and spring
Steps of installation
1． Use special lubricant to lubr-
icate pedal shaft.
2． Replacing assembly with brake
bush when replacing brake pedal.
3． Install pedal and spring on inst-
alling position, and insert pedal
shaft on support.
4． Note to install washers on two
sides when installing pedal and
spring.
5． Fix pedal shaft with nuts to the
support. Screw torque is 35±5N.m.
6. Connect vacuum booster handspike
to brake pedal. Insert the spring
pins to handspike.

Chery QQ Maintenance Manual Chassis System

3、Proportioning valve replace

Disassembly procedure
Points of attention:
Don’t clean the valve in any
cleaning liquid.
1.  Remove the cover of reservoir.
Pump out brake fluid in reservoir.
The more the better.
2. Support vehicle.
3.  Clean dusts on brake cylinder,
pipe and the valve.
4.  Use wrench to remove the
connector between the valve and brake
cylinder.
5.  Remove the brake pipe between the
valve to four wheel cylinders.
6. Remove nuts for valve, and remove
the valve.

Steps of installation

1.  Put valve bush on the nut of
support with hand, but don’t screw
tightly.
2.  Put four brake connectors on the
valve with hand. Put pipe that
connected with brake cylinder and the
valve with hand.
3.  Screw nuts of the valve with
torque 10N.m.
4.  Use wrench to fix the connector on
brake cylinder and the valve with
torque 25±2N.m.
5.  Fill brake fluid. Refer
“ draining out hydraulic system”
when draining out pressure.

Brake pedal parts

1.Pedal pad;2.Brake pedal;3.Gasket;4.Pedal

reture spring;5.Bolt;6.Nut;7.Pedestal.

Chery QQ Maintenance Manual Chassis System

4、Brake pipe replace

1）、Beaking line check

Check if brake hose is cracked,

damaged, leaked or projected. Check
2 times each year. Check if brake pipe
is cracked, damaged, leaked or
rusted.

2)、Brake pipe replace

Warning：Must use double wall

steel pipe when replacing brake pipe.
Don’t use other type pipe, otherwise
it will result malfunction for system.
Using correct fixing parts during
replacing. Lay the pipe on original
position. Bad install pipe will cause
interference to result malfunction
for system.
Attention: Use pipe wrench. Don’t
use single blade tool.

1) Replace front brake hose
Disassembly procedure
Warning：Don’t move vehicle before
the brake pedal is stable. The air in
the system will cause bad brake or
personal hurt.
Attention：Don’t suspend parts on
hose. It will damage the hose.
1.  Loosen reservoir cover and fill
fluid  to  maximum  level.  Cover  the
reservoir with other cover.
2.  Support and lift vehicle.
3.  Remove  two  front  wheels.  See”
Remove and install wheels”.
4.  Clear dirt and dust on hose and
connector.
5. Use wrench to remove brake pipe

from hose.

6. Remove hose install bracket fixed
card ,
Don’t bend brake pipe or bracket
7. From bracket remove hose
8. From caliper 2 remov the below unit

Brake hose screw 4
Hose 5
Two gaskets 3

Steps of installation
1. Install caliper 2

Brake hose screw 4
Hose 5
Two new gaskets 3

2.Use brake fluid to lubricate screw
thread
Fixture
Fixture brake hose cram screw to 25
±2N.m
3. Install brake hose on support
without any wrest for hose.

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