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;
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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;
3
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
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Chery QQ Maintenance Manual Chassis System
Step
Operation
Normal outcome
Abnormal outcome
1
Check the liquid level of
the brake liquid inside
the oil storage tank
At normal height
Too low
2
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.
3
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.
4
Release the brake pedal The pedal returns to its
original position.
The pedal fails to return to
the original position.
5
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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