1994 Ford Probe Brake Service (ONLINE REPAIR MANUALS)

• On models equipped with anti-lock brakes, prior to disconnecting any hydraulic lines or fittings, hydraulic system must be depressurized by pumping the brake pedal a minimum of 25 times with ignition switch in OFF position.
• On all models, grease or any other foreign material must be kept off caliper, disc surfaces and external hub surfaces during service procedures. Handling brake disc and caliper should be done in a way to avoid deforming disc and nicking or scratching brake linings.
• If inspection reveals rubber piston seals are worn or damaged, they should be replaced immediately.
• Du...

On vehicles equipped with anti-lock brakes refer to appropriate "Anti-Lock Brakes".

POWER BOOSTER, REPLACE

CROWN VICTORIA, GRAND MARQUIS, TEMPO & TOPAZ

• Disconnect battery ground cable.
• Disconnect master cylinder from booster and position aside. It is not necessary to disconnect brake lines, but care should be taken to avoid twisting or kinking lines.
• Disconnect manifold vacuum hose from booster check valve.
• Working under instrument panel, disconnect stop lamp switch electrical connector under instrument panel.
• Remove stop lamp switch retaining pin. Slide switch off brake pedal p...

MASTER CYLINDER

Except Capri, Escort, Sable, Taurus & Tracer

• On models equipped with ABS, depress brake pedal several times to exhaust all vacuum in the system.
• On all models, disconnect brake lines from master cylinder, then all necessary electrical connectors.
• On models equipped with ABS, disconnect hydraulic control unit supply hose at master cylinder. Secure hose in a position to prevent brake fluid loss.
• On all models, remove nuts retaining master cylinder to brake booster.
• Remove master cylinder.
• Reverse procedure to install. After installation is complete, fill master cyli...

CALIPER, REPLACE

MARK VII

Removal

• Raise and support vehicle, then remove tire and wheel assemblies.
• Disconnect fitting on rear brake tube from hose end fitting at frame mounted bracket. Plug end of brake tube to prevent fluid loss and entry of dirt.
• Remove horse shoe retaining clip from hose fitting and disengage hose from bracket.
• Disconnect parking cable from lever, Fig. , using care to avoid kinking or cutting cable or return spring, then remove screw from caliper key, Fig. , then remove caliper locating pins.
• Slide caliper key and support spring from anchor plate, Fig. , noting the...

The Anti-Lock Brake System (ABS), Figs. through , functions by releasing and applying fluid pressure to the brake calipers during certain braking conditions. During normal driving conditions the system does not function and has no effect on front-to-rear brake proportioning. When one or more wheels approaches a slip condition. The ABS automatically senses the slip and activates the pressure control function.

Through pre-programming, the control unit decides which wheel or wheel's brakes pressures need modulation. The control unit sends appropriate signals to solenoid valves located ...

FRONT & REAR SPLIT SYSTEMS

When the brake pedal is depressed, both the primary (front brake) and the secondary (rear brake) master cylinder pistons are moved simultaneously to exert hydraulic fluid pressure on their respective independent hydraulic systems. The fluid displacement of the master cylinder is proportioned to fulfill the requirements of each of the two independent hydraulic brake systems, Fig. .

If a failure of a rear (secondary) brake system should occur, initial brake pedal movement causes the unrestricted secondary piston to bottom in the master cylinder bore. Primary p...