Specifications

PART
2-2-Brake System
DlSC BRAKE ROTOR
SPLASH SHIELD
REMOVAL
1.
Remove the caliper and the
hub and rotor assembly as outlined
under Removal in the foregoing pro-
cedure.
2.
Remove the four nuts that at-
tach the splash shield to the mount-
ing bracket and remove the shield
(Fig. 17).
3.
Remove the gasket.
INSTALLATION
1.
Install the gasket.
2.
If the shield is bent, straighten
it out before installation. Position
the shield to the mounting bracket,
install the attaching nuts, and torque
to specification (Fig. 17).
3.
Install the hub and rotor assem-
bly and the caliper as outlined under
Installation in the foregoing proce-
dure.
DlSC BRAKE PRESSURE
CONTROL VALVE
The disc brake pressure control
valve is serviced as an assembly
and is never adjusted or overhauled.
Refer to View P of Fig. 20 for the
Fairlane, Falcon and Comet disc
brake pressure control valve installa-
tion. View R of Fig. 21 shows the in-
stallation of the Mustang and Cougar
disc brake pressure control valve.
REMOVAL
1.
Disconnect the brake tubes at
the disc brake pressure control valve.
On a Mustang and Cougar vehicle, re-
move the control valve.
2.
On a Fairlane, Falcon or Comet
vehicle, remove the attaching bolt
and clip and remove the disc brake
pressure control valve.
INSTALLATION
1.
On a Fairlane, Falcon or Comet
vehicle, position the disc brake pres-
sure control valve, clip and attaching
bolt as shown in Fig. 21, View P,
and tighten the attaching bolt.
2.
Connect the brake lines to the
disc brake pressure control valve, and
torque the connector nuts to specifi-
cation (Figs. 20 and 2
1).
3.
Bleed the brake system and cen-
tralize the differential pressure valve.
Refer to Part
2-1, Section 2 for the
correct procedure.
BOOT
\
Q
PISTON
FRONT
BLEEDER SCREW
PISTON
RETURN SPRING
cup BOOT
REAR
HI
197-0
FIG.
19-Front and Rear Wheel Cylinders
WHEEL CYLINDER REPAIR
Wheel cylinders should not be dis-
assembled unless they are leaking or
unless new cups and boots are to be
installed.
It is not necessary to remove the
wheel cylinder from the backing plate
to disassemble, inspect and overhaul
it. Removal is necessary only when
the cylinder is damaged or scored
beyond repair.
DISASSEMBLY
1.
With the wheel in a raised po-
sition, remove the wheel and the
drum.
2.
Place a clamp over ;he ends
of the brake cylinder as shown in
Fig. 14.
3.
Remove the brake shoe assem-
blies following procedure outlined
in this section.
4.
The 6-cy linder Falcon and Mus-
tang models are not provided with
links. Remove the rubber boots from
the ends of the piston.
On 8-cylinder models and on all
Comets and Fairlanes, remove the
links and rubber boots from the ends
of the piston. Remove the pistons,
cups, and return spring from the
cylinder bore (Fig. 19).
5.
Remove the bleeder screw
from the cylinder.
INSPECTION
1.
Wash all parts in clean speci-
fied brake fluid. Dry with compres-
sed air.
2.
Check all the internal parts for
excessive wear or damage. Replace
scored pistons. Always replace the
rubber cups and dust boots. If any of
the internal parts require replacing,
all should
be
replaced.
3.
Inspect the cylinder bore for
score marks or rust. If either con-
dition is present, the cylinder bore
must be honed. However, the cylin-
der should not be honed more than
0.003
inch beyond its original dia-
meter. A baffle in the front wheel
cylinder of the 6-cylinder Falcon and
Mustang models prevents honing;
therefore, the cylinder must be re-
placed.
4.
Check the bleeder hole to be
sure that it is open.
ASSEMBLY
1.
Apply a light coating of heavy-
duty brake fluid to all internal parts.
2.
Thread the bleeder screw into
the cylinder and tighten securely.
3.
Insert the return spring, cups,
and pistons into their respective posi-
tions in the cylinder bore (Fig. 19).
Place a boot over each end of the
cylinder. On 8-cylinder model Mus-
tangs, Cougars, Falcons and all
Comets and Fairlanes, install the links
in the ends of the brake cylinders.
4.
Install the shoe and adjuster as-
semblies, then adjust the shoes as
outlined in this section.
5.
Install the brake drum and
wheel, then bleed the brakes and
centralize the differential valve (Part
2-
I, Section 2).
WHEEL CYLINDER
REPLACEMENT
REMOVAL
1.
With the wheel in a raised posi-
tion, remove the wheel and the drum.