Ford Thunderbird 1967 - Page 10

PART 2-1
-Gen
era
I Brake
Service
2-3
TROUBLE
SYMPTOMS
POSSIBLE
CAUSES
OF
TROUBLE
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Shoe
and
Lining
Knock-back
after
Violent
Cornering
or Rough
Road
Travel
X
Shoe
and
Lining Assembly
not
Properly
Seated
or Positioned
X
X
X
Leak
or
Insufficient Fluid in System or Caliper
X
X
X X
Loose Wheel
Bearing
Adjustment
X X
Damaged
or Worn Caliper Piston Seal X X X
Improper Master Cylinder Push Rod Adjustment
X
Excessive Rotor Runout
or Out-of-Parallel X
Incorrect Tire
Pressure X
X
Frozen
or
Seized
Pistons X X X
X
Brake
Fluid,
Oil or Grease on Linings X X X
X
Shoe and
Lining
Worn
Below
Specifications X
Proportioning
Valve Malfunction X
X
Booster
Inoperative X
Caliper
Out
of Alignment with Rotor
X
X
Loose
Caliper Attachment X X
X
X
Metering
Valve Seal
Leaks
X
Excessive
Clearance
Between Shoe
and
Caliper
or
Between Shoe
and Splash Shield
X
Shoe Hold
Down Clips
Missing
or
Improperly
Positioned
X
Operator
Riding
Brake
Pedal
X
Scores
in the
Cylinder
Bore
X
Corrosion
Build-
Up
in the
Cylinder
Bore or on the
Piston
Surface
X X
X
Bleeder
Screw
Still
Open
X
X
Caliper
Out-of-Parallel
with Rotor
X
One
Section Dual
Brake
System is
Inoperative
X
X
Differential Pressure
Valve
is
Not Centered
X
Wiring
to
Warning Lamp
Switch is Grounded
X
Warning
Lamp
Switch is Grounded
X
Warning
Lamp
is
Burned Out
X
Warning
Lamp
Switch Has an
Open
Circuit
X
Warning
Lamp
Switch is
Inoperative
X
Wiring
to
Warning Lamp
Has
Open Circuit
X
FIG.
3
Disc
Brake
Trouble
Symptoms and Possible Caus*e