Chery S11 / Chery QQ. Manual - part 180

Chery QQ Maintenance Manual Chassis System

acts as the static status brake, featuring simple configuration and practicality
as well as high efficiency in operations. The braking pipeline system of the
QQ cars adopts the diagonally arrayed dual-loop braking system. The front chamber
of the main cylinder is connected to the brake of the left front wheel and the
brake on the right of the rear shaft. The rear chamber of the main cylinder is
connected to the brakes of the right front wheel and the left rear wheel. Such
arrangement is based on the idea of simple configuration. In the event that either
loop fails to perform properly, the remaining braking force will keep up to 50
% of the normal value. That means no matter which loop fails to work, the basic
requirements for braking can still be satisfied.

1、 Front steering knuckle and disk type brake assembly; 2、Braking pawl
fastening screw; 3、Steering knuckle; 4、Bearing; 5、Dust shield; 6、
Brake disk; 7、Front wheel hub; 8、Jump ring; 9、Fastening screw; 10、
Braking branch pump; 11、Friction block;

Chery QQ Maintenance Manual Chassis System

1. Brake base plate; 2. Branch pump; 3. Brake shoe; 4. Upper reset spring of
brake shoe; 5. Brake spacing self adjustment assembly; 6. Bolt; 7. Lower reset
spring of brake shoe; 8. Spring; 9. Dust-proof cover; 10. Brake drum locking
screw nut; 11. Jump ring; 12. Guard ring; 13. Bearing; 14. Brake drum; 15. Rear
wheel brake assembly;

Chery QQ Maintenance Manual Chassis System

1. Parking brake system;2. Bolt; 3. Nut; 4. Lock pin; 5. Parking brake cable;
7. Axis pin;8..Ap ron;9. Cable rubber sheath

1. Schematic diagram of brake alarming system

1）. Refer to the “Schematic Diagram of Instruments” for the brake liquid sensor

and static brake switch electric circuitry;

2）. Refer to the Schematic Diagram of Brake Lights for the electric circuitry

of the brake switch.

2. Diagnostic information and procedures

1). Checklist for hydraulic brake diagnostic system

Chery QQ Maintenance Manual Chassis System

Step

Operation

Normal outcome

Abnormal outcome

Check the liquid level of
the brake liquid inside
the oil storage tank

At normal height

Too low

Turn off the ignition

switch

Make sure the static

brake is loose

Activate the engine

The alarming indicating

light is on when the engine is
activated.

The light is on when the

engine is activated, but it
goes off after the engine is
started.

The light is not on when the

engine is activated.

The light is on after the

engine is started.

Step the brake pedal to
the extreme

The pedal moves stably

toward the floor.

The pedal stops and resists

the pressure.

The pedal moves unstea-

dily;

The pedal is too soft or too

close to the floor.

Release the brake pedal The pedal returns to its

original position.

The pedal fails to return to
the original position.

Test the hydraulic brake
system

The braking action is

immediately operated when the
pedal is stepped.

The operation of the brake

is smooth and normal without
any blocks and vibration of
the pedal.

The steering wheel and the

brake pedal do not vibrate
when the pedal is stepped.

The car stops without using

too much force in stepping the
pedal.

The car moves steadily

forward

during

braking

operation.

The front and rear brakes

work simultan-
eously.

The brake does not have much

operational noise.

The brake does not delay in

reset after the pedal is
released.

The braking action delays

after the pedal is stepped.

The brake works roughly when

the pedal is gently stepped.

The steering wheel or the

brake pedal vibrates when the
pedal is stepped.

It is hard to step the pedal

and to stop the car movement.

The car moves toward one side

when the brake is applied.

The front brake and the rear

brake work unevenly.

There is much operational

noise of the brake.

The brake delays to return to

the original position, after
the pedal is released.

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