1986 TOYOTA CAMRY V20 Service Information

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Page 849 of 2389

TOYOTA CAMRY V20 1986 Service Information Actuator
INSPECTION OF ACTUATOR
1. INSPECT CONTROL CABLE FREEPLAY
Measure the cable stroke to where the throttle valve be-
gins to open.
Standard: Approx. within 10 mm (0.39 in.) with a slight
amount

Page 850 of 2389

TOYOTA CAMRY V20 1986 Service Information Vacuum Switch
INSPECTION OF SWITCH
INSPECT SWITCH OPERATION (w/ A.B.S.)
(a) Check that there is no continuity b¿¿ween terminal
and body with a vacuum of 170
+10 mmHg (6.69 t
0.39 in.Hg, 22.7
+1.3

Page 851 of 2389

TOYOTA CAMRY V20 1986 Service Information BRAKE SYSTEM
± BRAKE SYSTEMBR±1

Page 852 of 2389

TOYOTA CAMRY V20 1986 Service Information PRECAUTIONS
1. Care must be taken to replace each part properly as it
could affect the performance of the brake system and re-
sult in a driving hazard. Replace the parts with parts of the
same part

PRECAUTIONS
1. Care must be taken to replace each part properly as it
could affect the performance of the brake system and re-
sult in a driving hazard. Replace the parts with parts of the
same part number or equivalent.
2. It is very important to keep parts and the area clean when
repairing the brake system.
Parking brake out of adjustment
Binding parking brake wire
Booster push rod out of adjustment
Tension or return spring faulty
Brake line restricted
Lining cracked or distorted
Pad cracked or distorted
Wheel cylinder or caliper piston sticking
Adjuster broken
Master cylinder faulty
Brake shoes distorted, linings worn or glazed
Brake pads distorted, worn or glazed
Drum or disc out of round
Tension or return spring faulty
Wheel cylinder faulty
Brake cylinder faulty
Piston frozen in brake cylinder
Brake pad stickingReplace brake shoes
Replace pads
Repair leak
Repair or replace master cylinder
Bleed brake system
Repair wheel cylinder
Repair cylinder
Repair brake cylinder
Repair or replace adjuster Air in brake system
Wheel cylinder faulty
Brake cylinder faulty
Piston seals worn or damaged
Rear brake automatic adjuster faulty
Adjust parking brake
Repair as necessary
Adjust push rod
Replace spring
Repair as necessary
Replace shoe
Replace pad
Repair as necessary
Replace pads
Replace drum or disc
Replace spring
Repair wheel cylinder
Repair cylinder
Repair cylinder
Replace padsInflate tires to proper pressure
Check for cause. Replace shoes
or pads
Replace brake shoes Linings worn
Brake pads worn
Leak in brake system
Master cylinder faulty
BR±18, 34
BR±18, 26
34
BR±26, 42
BR±26
BR±18, 34
BR±18, 34
BR±18, 34 Replace adjuster
Repair or replace master
cylinder
TROUBLESHOOTING
BR±7
BR±26
BR±18, 34
BR±18, 34
BR±26, 42
BR±18,34
BR±18, 26
34
Oil or grease on shoes or pads Tires improperly inflated
BR±18, 26
34
BR±26, 42
Low or spongy
pedalBR±26
BR±18, 34
BR±1 6
BR±26, 42 Possible cause
Brakes drag
Brakes pullRemedy Problem
Page
BR±8
BR±9BR±9
± BRAKE SYSTEMPrecautionsBR±2

Page 853 of 2389

PRECAUTIONS
1. Care must be taken to replace each part properly as it
could affect the performance of the brake system and re-
sult in a driving hazard. Replace the parts with parts of the
same part number or equivalent.
2. It is very important to keep parts and the area clean when
repairing the brake system.
Parking brake out of adjustment
Binding parking brake wire
Booster push rod out of adjustment
Tension or return spring faulty
Brake line restricted
Lining cracked or distorted
Pad cracked or distorted
Wheel cylinder or caliper piston sticking
Adjuster broken
Master cylinder faulty
Brake shoes distorted, linings worn or glazed
Brake pads distorted, worn or glazed
Drum or disc out of round
Tension or return spring faulty
Wheel cylinder faulty
Brake cylinder faulty
Piston frozen in brake cylinder
Brake pad stickingReplace brake shoes
Replace pads
Repair leak
Repair or replace master cylinder
Bleed brake system
Repair wheel cylinder
Repair cylinder
Repair brake cylinder
Repair or replace adjuster Air in brake system
Wheel cylinder faulty
Brake cylinder faulty
Piston seals worn or damaged
Rear brake automatic adjuster faulty
Adjust parking brake
Repair as necessary
Adjust push rod
Replace spring
Repair as necessary
Replace shoe
Replace pad
Repair as necessary
Replace pads
Replace drum or disc
Replace spring
Repair wheel cylinder
Repair cylinder
Repair cylinder
Replace padsInflate tires to proper pressure
Check for cause. Replace shoes
or pads
Replace brake shoes Linings worn
Brake pads worn
Leak in brake system
Master cylinder faulty
BR±18, 34
BR±18, 26
34
BR±26, 42
BR±26
BR±18, 34
BR±18, 34
BR±18, 34 Replace adjuster
Repair or replace master
cylinder
TROUBLESHOOTING
BR±7
BR±26
BR±18, 34
BR±18, 34
BR±26, 42
BR±18,34
BR±18, 26
34
Oil or grease on shoes or pads Tires improperly inflated
BR±18, 26
34
BR±26, 42
Low or spongy
pedalBR±26
BR±18, 34
BR±16
BR±26, 42 Possible cause
Brakes drag
Brakes pullRemedy Problem
Page
BR±8
BR±9BR±9
± BRAKE SYSTEMTroubleshootingBR±2

Page 854 of 2389

TOYOTA CAMRY V20 1986 Service Information (Drum brake)
Brake shoes binding at backing plate ledges
Backing plate ledges worn
Loose or missing shoe hold±down spring
Loose set bolt at backing plate
(Disc brake)
Loose or missing pad support pla

Page 855 of 2389

TOYOTA CAMRY V20 1986 Service Information Maladjustment of brake pedal or booster push
rod
Poor return of brake booster or master cylinder or
wheel cylinder
(Disc brake)
Rusted or stuck piston
Improper positioning of pad in caliper
Rotor rubb

Maladjustment of brake pedal or booster push
rod
Poor return of brake booster or master cylinder or
wheel cylinder
(Disc brake)
Rusted or stuck piston
Improper positioning of pad in caliper
Rotor rubbing against caliper housing
Improper installation of disc brake pad support
plate
Pad wear and pad wear indicator making contact
with the rotor
(Drum brake)
Weak, damaged or incorrect shoe hold±down
springs
Grooved backing plate ledges
Bent or warped backing plate causing
interference with drum
Improper machining of drum causing interference
with backing plate or shoe
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 Brake drums and linings, rotors and pads
worn or scored
Dirty, greased, contaminated or glazed
linings or pads
Improper linings or pads using
Maladjustment of brake pedal or booster
push rod
(Disc brake)
Missing or damaged brake pad
anti±squeal shim
Pad wear and pad wear indicator making
contact with the rotor
Burred or rusted calipers
(Drum brake)
Weak damaged or incorrect shoe
hold±down springs, loose or damaged
shoe hold±down spring pins and springs
and grooved backing plate ledges Squeaking, squealing
groaning or chattering
noise when brakes are
applied
Note: Brake friction
materials inherently
generate noise and heat in
order to dissipate eniergy.
As a result, occasional
squeal is normal and is
aggravated by severe
environmental conditions
such as cold,' heat,
wetness, snow, salt, mud,
etc. This occasional squeal
is not a functional problem
and does not indicate any
loss of brake effectivenessInspect, repair or replace
Clean or replace
Inspect for correct usage or
replace
Inspect and adjust
Inspect and lubricate as
necessary
Repair or replace
Repair or replace
Repair or replace
Replace
Replace
Repair or replace
Repair or replace
Replace drum
TROUBLESHOOTING (Cont'd)
Replace
Replace
Clean or deburr
Inspect and adjust
Inspect, repair or replace Squealing and
squeaking noise when
brakes are not applied
BR±26, 42
BR±26, 42
BR±26, 42
BR±26, 42 BR±18,34
BR±18, 34
BR±18, 34
BR±18, 34
Inspect, repair or replace as
necessaryBR±18, 34
BR±18, 34
BR±18, 34 BR±18, 26,
34
BR±18, 26
34
±Inspect, repair or replace
BR±9,15
26 Possible cause
BR± 18, 34 BR±6,16 . Page Remedy
BR±6, 16 Problem
BR±26
± BRAKE SYSTEMTroubleshootingBR±4

Page 856 of 2389

TOYOTA CAMRY V20 1986 Service Information Maladjustment of brake pedal or booster push
rod
worn, damaged or dry wheel bearings
(Disc brake)
Loose or missing anti±rattle spring or pad
support plate or rimping on outer pad
Failure of shim
Wear

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