Chery QQ Service Manual Chassis System
8、Description and operation
1)Brake gross pump
Points of attention
Use clean fluid to lubricate
rubber parts for easily mounting.
Don’t use compressed air with
lubricant on brake parts.
Drain out air for whole or partial
system after removing any
hydraulic parts.
The specified torque is used in
dry fixture.
Operate on the clean desk without mineral
oil.
The master cylinder consists of
plastic reservoir and aluminum shell.
The primary piston is used for front
brake and rear brake. Secondary
piston is used other front brake and
rear brake. Fluid level sensor in
mounted on reservoir. Proportional
valve is mounted below master
cylinder. The valve is used to offer
better balance for front/rear brake
in heavy load.
Proportioning valve
Points of attention
Don’t clean the valve in any
washing fluid. The valve is below
master cylinder. Fluid will damage
paint and electric element. Resin the
parts if fluid sprayed on vehicle.
Level sensor
Level sensor in mounted in master
cylinder. Sensor switch is in
reservoir. If the level is too low,
sensor will turn warning light on.
When the level is correct, light is
off. Please see “ Brake warning
system” in “ Diagnosis for electric
system”.
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Chery Automobile Co., Ltd
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