Ford Thunderbird 1966 User Manual

24
GROUP
2 -BRAKES
COMMON
ADJUSTMENTS AND
REPAIRS
PARKING BRAKE
LINKAGE
ADJUSTMENT
Check
the
parking
brake
cables
when
the brakes are
fully
released.
If
the
cables
are
loose,
adjust them
as
follows:
1.
Fully
release the
parking
brake
pedal
by
pushing
down the manual
release lever.
2.
Raise
the
car.
3.
Adjust the equalizer lever
against
the cable
spring
on the pedal
cable
to
the dimension shown
in
Fig.
1.
4. Loosen
the
adjusting
nut
on
the
equalizer
rod,
and
then turn
the lock
nut
in front of the equalizer several
turns forward.
5.
Depress
the
parking
brake
pedal 1
3/4
inches from its
normal
released
position.
6. While
turning
the rear
wheels
in a rearward
direction,
turn the
ad
justing
nut
against
the equalizer until
a
moderate
drag
is felt
(Fig. 1).
7. When the cables are
properly
adjusted,
tighten
the
lock
nut
against
the
equalizer.
8.
Release
the
parking
brake,
and
check to
make
sure that
the brake
shoes
return to
the
fully
released
position.
9.
Depress
the
parking
brake
pedal two
inches.
Under
normal
conditions,
this will
satisfactorily
hold
the
car.
10.
Release the
parking
brake
again,
and
then
depress the
pedal 1/2
inch.
The
brakes
should
not
drag
with
the
pedal
depressed
1/2
inch.
If
the
rear brakes
do not
fully
release,
check
the cables
for
kinks
or
binds.
Free the
cables as
required.
MASTER
CYLINDER
PUSH
ROD
ADJUSTMENT
The
push
rod is
designed
with a
self-locking
adjustment
screw
to
provide
the
correct
relationship
between
the
booster
piston and
the
master
cylinder
piston.
The ad
justment
screw
is
set
to
the
correct
height
at
the
time
of
original
assembly
of
the
power
unit.
Under
normal
service the
adjustment
screw does
not
require
any
further
attention
providing
the
push
rod
assembly
re-
U-CLIP
CABLE
HOUSING
END
SPRING
SEAT
CABLE SPRING
LEVER-TO-CABLE
ADJUSTING
NUT
EQUALIZER
ROD
EQUALIZER
LEVER
CABLES
TO
REAR WHEELS
H1307-A
FIG.
1
Parking
Brake
Adjustments
mains
in the
original unit.
However,
when a
new
push rod is used
or the
push rod
assembly
is transferred to
another
unit,
the distance
from the
end
of
the adjustment
screw to the
mounting
surface of the
booster
body
should
be rechecked
either
with
a
micrometer
depth gauge to a
dimen
sion
of 0.380 0.995
inch,
or
with
a
height
gauge as
shown in Fig. 2. The
details
for
making
a height
gauge are
given in
Fig. 3.
ADJUSTMENT
SCREW
Push
Rod
Gauge
HI
086-
A
FIG.
2
-Push Rod Adjustment
#15
OR
#16 U.S.S.
GAUGE SHEET
STEEL
2-7/8".
H1087-C
FIG.
3-Push Rod
Gouge
Dimensions
To adjust the
push
rod,
hold the
serrated end
of the rod with
cross-
milled pliers
and
turn
the adjustment
screw
in
to
shorten,
or out
to
lengthen.
After
assembly
of
the master
cylinder
to the power
section,
the pis
ton
cup
in the hydraulic cylinder
should just clear the
compensating
port hole
when
the unit is
in
the
fully
released
position. This can be
checked
by
placing
a
few
drops
of brake
fluid
over the
compensating
port and
ap
plying
light
air
pressure to the output
port
of the
master
cylinder.
If air bub
bles
appear,
the
port is open.
If
the
primary
piston
cup
overlaps the com
pensating
port,
there will be
no
flow
of air through the
compensating
port.
If
this
condition
exists,
the
ad
justment
screw
should be
turned into
the
push
rod a slight amount
or until
the
compensating
port is open.
HYDRAULIC SYSTEM
BLEEDING
When
any
part
of the hydraulic sys
tem has
been disconnected
for repair
or
replacement,
air
may
get into the
lines
and
cause
spongy
pedal action.
Bleed the hydraulic
system after
it has
been
properly
connected to
be sure
that
all air is
expelled from
the brake
cylinders,
disc brake
calipers,
and
lines.

Ford Thunderbird 1966 Specifications

General

Brand	Ford
Model	Thunderbird 1966
Category	Automobile
Language	English