Toyota Celica 1993 AT200 series Repair Manual page 523

BR.8
B R A K E S Y S T E M - C H E C K A N D A D J U S T M E N T
Pedal freeplay:
1 - 0 mm (0.04 - 0.24 in.)
lf incorrect, check the stop light
A n d i f t h e c l e a r a n c e i s O K , t h e n
brake system.
switch c learan ce.
troubleshoot the
CHECK THAT PEDAL RESERVE DISTANCE IS COR-
RECT
Release the parking brake.
W i t h t h 6 e n g i n e r u n n i n g , d e p r e s s t h e p e d a l a n d m e a s -
ure the pedal reserve distance, as shown.
Pedal reserve distanco lrom asphalt sheBt at
490 N (50 ksf, 1 10.2 lbf):
7 A _ F E , 3 3 - G E
LHD Vehicle: More than 90 mm (3.54 in.)
BHD Vehicle: Mor6 than 80 mm (3.14 in.)
5 S _ F E
More than 80 mm (3.14 in.)
3 5 - F E
LHD Vehicle: More than 90 mm (3.54 in.)
RHD Vehicle: Moro than 80 mm (3.14 in.)
lf the reserve distance is incorrect. troubleshoot ths
brake svstem.
BRAKE BOOSTER OPERATIONAL TEST
*
1 . O P E R A T I N G C H E C K
(a) Depress the brake pedal severaltimos with the engine
off and check that thsrs is no change in the pedal
reservs dista nce.
( b ) D e p r s s s t h e b r a k s p e d a l a n d s t a r t t h 6 e n g i n e . l f t h e
pedal goes down slightly, operation is normal.
2 . A I R T I G H T N E S S C H E C K
(a) Start the engine and stop it after 1 or 2 minutes.
Depress the brake pedal several times slowly. lf ths
pedal goes down farth6st ths 1st time, but gradually
rises after the 2nd or 3rd time, th€ boostor is air tight.
( b ) D e p r e s s t h a b r a k a p e d a l w h i l e t h e 6 n g i n e i s r u n n i n g ,
and stop the engine with the pedal depressed. lf there
is no change in the pedal raservs traval after holding
the pedal for 30 seconds, ths boostor is air tight.
4.
BR
G O O D
N O G O O O
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