1985 TOYOTA TERCEL brakes

BR-2BRAKE SYSTEM - Precautions, Troubleshooting
PRECAUTIONS
1. Care must be taken to replace each part properly as it
could affect the performance of the brake system and
result in a driving hazard. Replace the parts with parts
of the same part number or equivalent.
2, ltnis very important to keep parts and the area clean
wltsn repairing the brake system.
TROUBLESHOOTING
ProblemPossible causeRemedyPage
Low or spongy pedalLinings worn
Leak in brake system
Master cylinder faulty
Air in brake system
Wheel cylinder faulty
Piston seals worn or damaged
Rear brake automatic adiuster faulty
Replace brake shoes or pads
Repair leak
Repair or replace master cylinder
Bleed brake system
Repair wheel cylinder
Repair brake calipers
Repair or replace adjuster
BR-16,22
BR-43
BR-9
BR-7
8R.22
BR-1 6
B,R.22
Brakes dragParking brake out of adjustment
Parking brake wire binding
Booster push rod out of adjustment
Return spring faulty
Brake line restricted
Lining cracked or distorted
Wheel cylinder or caliper piston sticking
Automatic adjuster broken
Master cylinder faulty
Adjust parking brake
Repair as necessary
Adjust push rod
Replace spring
Repair as necessary
Replace brake shoe
Repair as necessary
Replace adjuster
Repair or replace master cylinder
BR.8
BR.1 5
BR-22
BR-22
BR-18,22
BR-22
BR-9
Brakes pullTires improperly inflated
Oil or grease on linings
Brake shoes distorted, linings worn or
glazed
Drum or disc out of round
Return spring faulty
Wheel cylinder faulty
Piston frozen in caliper
Disc brake pad sticking
Inflate tires to proper pressure
Check for cause, replace lining
Replace brake shoes
Replace drum or disc
Replace spring
Repair wheel cylinder
Repair caliper
Replace pads
FA-3
BR-16,22
BR-16,22
BR-l8,22
BR-22
BR-18,22
BR.1 8
BR-1 6
Hard pedal but
brakes inefficient
Oil or grbase on linings
Brake shoes distorted, linings worn
or glazed, drums worn
Disc brake pads worn
Piston frozen in caliper
Brake booster faulty
Brake line restricted
Check for cause, replace lining
Replace brake shoes
Replace pads
Repair caliper
Repair booster
Repair as necessary
BR-I6,22
BR-16,22
BR-1 6
BR-1 6
BR.1 4

BRAKE SYSTEM - TroubleshootingBR.3
TROU BLESHOOTING (Cont'd)
ProblemPossible causeRemedyPage
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Snapping or clicking
noise when brakes
are applied
Drum brakes - brake shoes binding
at backing plate ledges
Drum brakes - backing plate ledgesworn
Drum brakes - loose or missing
hold down spring
Drum brakes - loose set bolt
at backing plate
Disc brakes - rust on front edge of
inboard shoes
Disc brakes - loose or missing pad
support plate
Disc brakes - loose installation
bolt
Disc brakes - wear on slide bushing
Lubricate
Replace and lubricate ledges
Replace
E,
Tisnteffit'
Inspect lubricate, replace if
necessary
Replace
Tighten
Replace
BR-22
BR-22
BR-22
BR-22
BR.1 6
BR-1 6
BR-1 6
BR-1 6
Scraping or grinding
noise when brakes
are applied
Worn brake linings
Caliper to wheel or rotor interference
Dust cover to rotor or drum
interference
other brake system components:
Warped or bent brake backing
plate or splash shield, cracked
drums or rotors
Tires rubbing against chassis and
body
Replace, refinish drums or
rotors if heavily scored
Replace as required
Correct or replace
lnspect or service
Inspect or service
BR-16,22
BR.1 8
BR-l8,22
BR-h1N,22
%

BR-4 BRAKE SYSTEM - Troubleshooting
TROU BLESHOOTI NG (Cont'd)
ProblemPossible causeRemedyPage
Squeaking, squealing
groaning or chatter-
ing noise when brakes
are applied
Note: Brake friction
materials inherently
generate noise and
heat in order to
dissipate energy.
As a result
occasional squeal
is normaland is
aggravated by severe
environmetal condi-
tions such as cold,
heat, wetness, snow,
salt mud, etc.
This occasional
squeal is not a func-
tional problem and
does not indicate
any loss of brake
effectiveness
Brake drums and linings rotors and
pads worn or scored
Disc brakes - missing or damaged
brake pad anti-squeal shim
Disc brakes - burred or rusted calipers
Dirty, greased, contaminated or
glazed linings
lmproper lining parts
Maladjustment of brake pedal or
booster push-rod
Drum brakes - weak damaged or
incorrect shoe hold down springs, loose
or damaged shoe hold down spring pins
springs and grooved backing plate
ledges
Inspect, service or repalce
Replace
Clean or deburr
Clean or replace
Inspect for conect usage
replace
lnspect and adjust
Inspect service or replace
BR-16,22
BR.l 6
BR-1 8
BR-16,22
BR-'t6,22
BR-6,15
8R.22
Squealing and
squeaking noise
when brakes are
not applied
Bent or warped backing plate causing
interference with drum
lmproper machining of drum causing
interference with backing plate or shoe
Maladjustment of brake pedal or
booster push-rod
Poor return of brake booster or master
cylinder or wheel cylinder
Disc brakes - rusted, stuck
Other brake system, components:
Loose or extra parts in brakes
Rear drum adjustment too tight
causing lining to glaze
Worn, damaged or insufficiently
lubricated wheel bearings
Service or replace
Replace drum
Inspect and adjust
Inspect, service or replace
Inspect lubricate as necessary
Inspect, service, replace as
required
BR-22
8R.22
BR-6,15
BR-g,15,22
BR.1 6
BR-16,22

BRAKE SYSTEM - TroubleshootingBR-5
TROUBLESHOOTING (Cont'dl
ProblemPossible causeRemedyPage
Squealing and
squeaking noise
when brakes are
not applied (cont'd)
Drum brakes - weak, damaged or
incorrect shoe hold down springs
Drum brakes - grooved backing plate
ledges
lmproper positioning of pad in caliper
Outside diameter of rotor rubbing
caliper housing
Housing installation of disc brake
pad support plate
Inspect, service or replace
Inspect, service or replace
Inspect and service
Inspect, service or replace
Correct
BR-22
BR-22
BR-l 6
BR-l 6
BR-1 6
Groaning, clicking
or rattling noise
when brakes are
not applied
Stones or foreign material trapped
inside wheel covers
Loose wheel hub nuts
Disc brakes - failure of shim
Disc brakes - wear on slide bushing
Disc brakes - loose installation
bolt
Maladjustment of brake pedal or
booster push-rod
Disc brakes - poor return of piston
Drum brakes - loose or extra parts
Worn, damaged or dry wheel bearings
Remove stones, etc.
Tighten to correct torque and re-
place if stud holes are elongated
lnspect, replace if necessary
Inspect, replace if necessary
Inspect, tighten if necessary
lnspect and adjust
Inspect, service or replace
Inspect remove or service
lnspect lubricate or replace
BR-18,22
BR.1 6
BR.1 6
BR-1 6
BR-6,15
BR.1 8
B,R.22

8R.28BRAKE SYSTEM - Rear Brake (Sedan)
12. CHECK OPERATION OF AUTOMATIC ADJUSTER
MECHANISM
(a) Move the parking brake lever of the rear shoe back
and forth, as shown. Check that the adjusting bolt
turns.
lf the bolt does not turn, check for incorrect installation of
the rear brakes.
(b) Adjust the strut length to the shortest possible
amount.
(d lnstall the drum.
(d) Pull the parking brake lever all the way up.
13. CHECK CLEARANCE BETWEEN BRAKE SHOES AND
DRUM
h) Remove the drum.
(b) Measure the brake drum inside diameter and
diameter of the brake shoes. Check that the
difference between the diameters is the correct shoe
clearance.
Shoe clearance: 0.6 mm (0.O24 in.l
lf incorrect check the parking brake system.
14. INSTALL BRAKE DRUM AND ADJUST PRELOAD
(See page RA-61
15. INSTALL REAR WHEEL
16. FILL BRAKE RESERVOIR WITH BRAKE FLUID
AND BLEED BRAKE SYSTEM (See page BR-71
17. CHECK FOR FLUID LEAKAGE
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BRAKE SYSTEM - Rear Brake (Wason FWD)BR-35
1O. CHECK OPERATION OF AUTOMATIC ADJUSTER
MECHANISM
(d Move the parking brake lever of the rear shoe back
and forth, as shown. Check that the adjusting bolt
turns.
lf the bolt does not turn, check for incorrect installation of
the rear brakes.
Adjust the strut length to the shortest possible
amount.
Install the drum.
Pull the parking brake lever all the way up.
CHECK CLEARANCE BETWEEN BRAKE SHOES AND
DRUM
(a) Remove the drum.
(b) Measure the brake drum inside diameter and
diameter of the brake shoes. Check that the
difference between the diameters is the conect shoe
clearance.
Shoe clearance: 0.6 mm (0.024 in.l
lf inconect check the parking brake system.
INSTALL BRAKE DRUM
INSTALL REAR WHEEL
FILI BRAKE RESERVOIR WITH BRAKE FLUID AND
BLEED BRAKE SYSTEM(See page BR-71
CHECK FOR FLUID LEAKAGE
(b)
(c)
(d)
11.
12.
13.
14.
15.

BRAKE SYSTEM - Rear Brake (Wagon 4WD)8R.41
8. INSTALL REAR SHOE
CAUTION: Do not allow oil or grease to get on the
rubbing face.
H Using pliers, connect the parking brake cable to the
lever.
(b) Set the rear shoe in place with the end of the shoe
inserted in the wheel cylinder and the other end in the
anchor plate.
(c) lnstall the pin and the shoe hold-down spring.
9. INSTALL FRONT SHOE
CAUTION: Do not allow oil or grease to get on the
rubbing face.
(a) Install the anchor spring between the front and rear
shoes.
(b) Set the front shoe in place with the end of the shoe
inserted in the wheel cylinder and the strut in place.
(c) Install the shoe hold-down spring and pin.
(d) Using SST, connect the return spring.
ssr 09703-30010
10. CHECK OPERATION OF AUTOMATIC ADJUSTER
MECHANISM
(a) Move the parking brake lever of the rear shoe back
and forth, as shown. Check that the adjusting bolt
turns.
lf the bolt does not turn, check for incorrect installation of
the rear brakes.