Ford Thunderbird 1966 User Manual

2-1
GROUP
PART
2-1
GENERAL
BRAKE SERVICE
PART
2-2
BRAKE
SYSTEM
PAGE
PART
2-3
. .
2-1
SPECIFICATIONS
PAGE
.
2.22
2-7
PART
2-1
GENERAL BRAKE
SERVICE
Section
Page
1
Diagnosis and
Testing
2-1
Preliminary
Tests
2-1
Road Test
2-1
Disc Brake Trouble
Symptoms and
Possible
Causes
2-2
Drum Brake Trouble
Symptoms and
Possible
Causes
2-3
2 Common
Adjustments and
Repairs 2-4
Section
Page
Parking
Brake Linkage
Adjustment
2-4
Power Brake Master Cylinder
Push
Rod
Adjustment
2-4
Hydraulic
System
Bleeding
2-4
3
Cleaning
and
Inspection
2-5
Disc
Brakes 2-6
Drum
Brakes
2-6
Booster
Unit
2-6
DIAGNOSIS
AND TESTING
PRELIMINARY TESTING
1. Check the fluid
level
in the
master
cylinder,
and add Rotunda
R103-A
Super
Heavy Duty
brake
fluid
(B7AZ-19542-A)
if
required.
2.
Push
the
brake
pedal down as
far as
it
will go
while the
engine is
running
or
vacuum
is in
the system
and
the
car is
standing
still.
If
the
pedal
travels to
a
point
less
than 1
inch
from
the
floor
pan,
check the
brake
adjustment
and
the
automatic
adjusters.
To
check
rear
brake
adjuster opera
tion,
check the
shoes
and the
adjuster
components
for
binding
or
improper
installation
and
follow the
procedure
described
under
Brake
Shoe Ad
justments
in Part
2-2,
Section 2.
Make
several
reverse
brake stops
to
ensure
uniform
adjustment at
the
rear
wheels.
On
front
disc
brakes,
the
automatic
adjustment
is
a
permanent
built-in
feature.
3.
With
the
transmission
in
neutral,
stop
the
engine and
apply
the
parking
brake. Depress the service brake pedal
several
times to exhaust
all
vacuum in
the
system.
Then,
depress the
pedal
and hold it
in the
applied position.
Start the
engine. If
the vacuum
system
is
operating,
the pedal will
tend
to
fall
away
under foot
pressure
and
less
pressure
will
be
required to hold the
pedal in
the applied position. If
no ac
tion is
felt,
the vacuum
booster
system
is not functioning.
4. With
the
engine shut
off,
ex
haust
all
vacuum
in
the
system.
Depress the brake
pedal
and hr'd
it
in
the applied
position.
Ifthepc
ually
falls
away
under thi?
the
hydraulic system
is
lea!.
all
tubing,
hoses,
calipers,
cylinders,
and
connections
for
leaks.
If
the
brake pedal
movement
feels
spongy,
bleed
the
hydraulic
system
to
remove air
from
the
lines
and
cylinder.
See
Hydraulic
System
Bleed
ing,
Section
2.
Also,
check
for
leaks
or
insufficient
fluid.
5. Should one of
the
brakes
be
locked
and the
car
must
be
moved,
open the bleeder screw
long
enough
to
let
out
a few
drops
of
brake
fluid.
This
bleeding
operation
will
release
the
brakes,
but
it
will
not
correct
the
cause
of
the
trouble.
ROAD
TEST
The
car
should
be
road
tested
only
if
the
brakes
will
safely
stop
the
car.
Apply
the
brakes
at a
speed of
25-30
mph
to
check
for
the
existence
of
the
trouble
symptoms
listed
in
Table
1,
with
the
exception
of
brake
chatter
and
those
symptoms
resolved
in
the
preliminary
tests.
For
each
of
the
symptoms
encountered,
check
and
eliminate
the
causes
which
are
also
listed in
Table
1.
To
check
for
brake
chatter
or
surge,
apply
the
brakes
lightly
at
approximately
50
mph.
Chatter
or
surge
will
apply
almost
en
tirely
to
rear
brakes
only.
For
booster
removal
and
installa
tion
procedures,
refer
to
Part
2-2,
Sec
tion
3.
No
service
repairs,
other
than
adjustment of
the
push
rod,
are
made
onjhfcrfco-oster.
Replace
the
assembly
Avlien
the
booster
is
determined
to
be
defective.

Ford Thunderbird 1966 Specifications

General

Brand	Ford
Model	Thunderbird 1966
Category	Automobile
Language	English