Toyota Celica 1993 AT200 series Repair Manual page 517

BR-2
B R A K E S Y S T E M _ G E N E R A L D E S C R I P T I O N
G E N E R A L D E S C R I P T I O N
1.
Care must be taken to replace each part properly as it could affect the performance of the 6% iL
systsm and result in a driving hazard. Replace the parts with parts of the same part number or
eq u iva le nt.
2,
lt is vary important to ke6p parts and tho area clean whsn repairing the brake system.
3 .
l f t h e v e h i c l e i s e q u i p p e d w i t h a m o b i l e c o m m u n i c a t i o n s y s t e m , r e f s r t o t h o p r e c a u t i o n i n t h e l N
se ct io n.
D E S C R I P T I O N
The service brakes consist of a foot brake which changes rotational energy to thermal enerilio
stop tho vohicl€ whils it is being driven and a parking brak6 to keep the vehicle from moving while
it is parked.
ffi orrrAroN
FOOT BRAKE
W h e n t h e b r a k e p e d a l i s d e p r e s s e d , a v a c u u m b u i l d s u p i n t h e b o o s t e r w h i c h a m p l i f i e s t h e p e d a l
force, pressing on the piston in the mastar cylinder. The piston movement raises the hydraulic
pr€ssu16 in the cylinder. This hydraulic pressure is then applied to sach respective brake cylinder
and wheel cylinder, and acts to prsss the brake pads and shoes against the rotating discs and
brake drum. The resulting friction converts the rotational energy to thermal energy, stopping the
v e h i c l e .
E r a k e B o o s t e r
R e a r D i s c B r a k e
M a s t e r C y l i n d e r
P r o p o r t i o n i n g V a l v e
A B S A c t u a t o r
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F r o n t D i s c B r a k e
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B r a k e P e d a l