Toyota Tercel 1985 Repair Manual page 566

BRAKE SYSTEM - Checks and Adjustments
BR-7
@ @
V V
1 st
2nd
OPERATIONAL TEST OF BRAKE BOOSTER
NOTE: lf available, use a brake booster tester to check
the booster operating condition.
1. OPERATING CHECK
(a) Depress the brake pedal several times with the
engine off, and check that there is no change in the
pedal reserve distance.
(b) Depress the brake pedal and start the engine. lf the
pedal goes down slightly, operation is normal.
2. AIR TIGHTNESS
(d
Start the engine and stop it after one or two minutes.
Then depress the brake pedal several times slowly. lf
the pedal goes down fartherest the first time, and
less the second and third time, the boo$ter is air
tight.
(b) Depress the brake pedal while the engine is running,
and stop it with the pedal depressed. lf there is no
change in pedal reserve travel after holding the pedal
for thirty seconds, the booster is air tight.
BLEEDING OF BRAKE SYSTEM
NOTE: lf any work is done on the brake system or if air is
suspected in the brake lines, bleed the system of air.
CAUTION: Do not let brake fluid remain on a painted
surface. Wash it off immediataly.
1.
FILL BRAKE RESERVOIRS WITH BRAKE FLUID
Check the reservoir after bleeding each wheel. Add fluid, if
necessary.
2, CONNECT VINYL TUBE TO WHEEL CYLINDER
BLEEDER PLUG
lnsert the other end of the tube in a half-full container of
brake fluid.
3. BLEED BRAKE LINE
(a) Slowly pump the brake pedal several times.
(b) While an assistant depresses the pedal, loosen the
bleeder plug until fluid starts to runout. Then close
the bleeder plug.
(c) Repeat this procedure until there are no more air bub-
bles in the fluid.
Bleeder plug tightening torque:
85 kg-cm (74 in.-lb,8.3 N.m)
4. REPEAT PROCEDURE FOR EACH WHEEL