2009 Ford Focus Brake Service (ONLINE REPAIR MANUALS)

This system operates on the same principles as conventional front and rear split systems using primary and secondary master cylinders moving simultaneously to exert hydraulic pressure on their respective systems, Fig. .

The hydraulic brake lines on this system, however, have been diagonally split front to rear (left front to right rear and right front to left rear) in place of separate lines to the front and rear wheels.

In the event of a system failure this would cause the remaining good system to do all the braking on one front wheel and the opposite rear wheel, thus maintaining 50%...

Remove wheels and inspect brake disc, caliper and linings. Inspect wheel bearings and repack if required.

If the caliper is cracked or fluid leakage through the casting is evident, it must be replaced as a unit.

If caliper is removed when installing new components, clean all components in alcohol, then wipe dry using lint-free cloths. Blow out drilled passages and bores with compressed air. Inspect dust boots for punctures or tears, replace as required.

Inspect piston bores in both housings for scoring or pitting. Bores showing light scratches or corrosion can be cleaned with crocus clo...

Brake System Bleed

Pressure bleeding is recommended for all hydraulic brake systems. Ensure all dirt and contaminants are removed from master cylinder area prior to removing reservoir cap.

To prevent air from the pressure tank getting into the lines, do not shake the tank while air is being added to the tank or after it has been pressurized. Set the tank in the required location, bring the air hose to the tank, and do not move it during the bleeding operation. The tank should be kept at least one-third full.

On vehicles equipped with disc brakes and master cylinders without proporti...

On models with anti-lock brakes, the brake hydraulic system must be depressurized before disconnecting any hydraulic lines or fittings. Depressurize the system by pumping the brake pedal at least 25 times with the ignition in the Off position.

Crown Victoria, Fusion, Grand Marquis, Milan, MKZ, MKS, Sable, Taurus, Taurus X & Town Car

Removal

• Remove brake fluid until reservoir is half full.
• On models equipped with air suspension, turn air suspension service switch to Off position.
• On all models, raise and support front of vehicle, then remove tire and wheel assembly.
• Remove two calipe...

Power brake operation concerns should be handled as if two separate systems exist.

• Inspect for faults in hydraulic system first.
• If hydraulic system is satisfactory, inspect power brake circuit.
• Press brake pedal firmly and then start engine.
• Pedal should fall away slightly and less pressure should be needed to maintain pedal in any position.
• Install of suitable pressure gauge in brake hydraulic system.
• Record pressure with engine off and power unit not operating.
• Maintain pedal height, start engine and record measurement.
• There should be substantial pressure increase in second measurem...

Power brake operation concerns should be handled as if two separate systems exist.

• Inspect for faults in hydraulic system first.
• If hydraulic system is satisfactory, inspect power brake circuit.
• Press brake pedal firmly and then start engine.
• Pedal should fall away slightly and less pressure should be needed to maintain pedal in any position.
• Install of suitable pressure gauge in brake hydraulic system.
• Record pressure with engine off and power unit not operating.
• Maintain pedal height, start engine and record measurement.
• There should be substantial pressure increase in second measurem...