Brake Booster Not In Braking - Chery QQ Service Manual

Brake Booster not in Braking

Vacuum
Constant-pressure chamber
- chamber B
To brake
wheel
cylinder
Brake master cylinder
Cylinder sleeve
Spring
Piston
Variable-pressure chamber
- chamber A
Relationship
between F
and F
a
F =F
b a
F pushes the
s
Valve
piston to the right.
+ F
b s