1992 Mercury Capri Brake Service (ONLINE REPAIR MANUALS)

Disc brake service is extremely critical due to the close tolerances required in machining the brake disc to ensure proper brake operation.

Maintaining close control of the shape of the rubbing surfaces is necessary to prevent brake roughness. In addition, the surface finish must be non-directional and maintained at a micro-inch finish. This is necessary to avoid pulls and erratic performance and promote long lining life and equal lining wear of both the left and right brakes.

Do not attempt to refinish the rubbing surfaces unless precision equipment...

CAPRI

Removal

• Raise and support vehicle, then remove wheel and tire assembly.
• Using chisel, unstake and remove halfshaft nut and washer. Discard nut and washer.
• Remove brake pads and caliper from steering knuckle as described under "Brake Pad Service."
• Support caliper with wire strung from coil spring. Do not disconnect brake line from caliper.
• Using tie rod end separator tool No. T85M-3395-A, or equivalent, disconnect tie rod end from steering knuckle.
• Remove ball joint pinch bolt, then separate control arm from steering knuckle.
• Remove steering knuckle to strut assembly bolts.
• Using knuck...

CROWN VICTORIA, GRAND MARQUIS & TOWN CAR

Parking Brake Linings, Replace

The parking brake system is a drum type design mounted in the hubs of the rear brake rotors.

• Raise and support vehicle, then remove wheel and tire assembly.
• Remove caliper as previously outlined, then the rotor assembly.
• Drain differential fluid from axle by removing cover.
• Remove lock bolt from differential pinion shaft, then the pinion shaft from differential.
• Push axle shaft inward to gain access to axle shaft C-lock, then remove C-lock.
• Remove ABS speed sensor, then the axle shaft from axle housing.
• Disconn...

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...

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...

BRAKE ROUGHNESS

The most common cause of brake chatter on disc brakes is a variation in thickness of the disc. If roughness or vibration is encountered during highway operation or if pedal pumping is experienced at low speeds, the disc may have excessive thickness variation. To check for this condition, measure the disc at 12 points with a micrometer at a radius approximately one inch from the edge of the disc. If thickness measurements vary by more t...