Ford Thunderbird 1967 - Page 11

2-4
GROUP
2-Brakes
TROUBLE
SYrV IPTC
>MS
POSSIBLE
CAUSES OF
TROUBLE
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Mechanical
Resistance at Pedal or Shoes X X
Brake
Line Restricted
X X X
X
Leaks or
Insufficient Fluid
X X X X X
Improper Tire Pressure X X
Distorted or
Improperly
Adjusted Brake Shoe
X X X
X
X X X
Faulty Retracting
Spring
X X
Drum Out of Round
X X X
Lining
Glazed
or Worn
X X X X
X
X X
Oil
or Grease on
Lining
X X X X X X
Loose
Carrier Plate
X X X
Loose
Lining
X
Scored Drum
X X
Dirt
on
Drum-Lining
Surface X
Faulty
Brake
Cylinder
X X X
X
Dirty
Brake
Fluid
X
X
X
X
Faulty
Master Cylinder
X
X
X
X
Air in Hydraulic
System
X X
X X
Self Adjusters
Not
Operating
X
X
Insufficient
Shoe-to-Carrier Plate
Lubrication
X
X X
Tire
Tread
Worn
X
Poor
Lining-to-Drum
Contact X
Loose
Front
Suspension
X
Threads
Left
by
Drum
Turning
Tool
Pulls
Shoe
Sideways
X
1
Cracked
Drum
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
Wiring
to
Warning
Lamp
Has Open
Circuit
1
X
FIG.
4
Drum
Brake (and
General
System)
Trouble Symptoms
and
Possible Causes