Inspection and Verification (Start Testing Here)

Visually inspect the following components for mechanical or electrical problems:
Mechanical
- Brake master cylinder
- Brake caliper piston
- Disc brake rotors
- Wheel bearings
- Brake pads
- Power brake booster
- Brake pedal linkage
- Booster vacuum hose
- Tires
- Debris

Electrical
- Parking brake switch
- Damaged or corroded wiring harness
- Brake master cylinder fluid level switch
- Stoplight switch

For low or spongy brake pedal concerns:
- Check and, if necessary, refill the brake master cylinder reservoir.
- Bleed the brake system and retest the brake pedal feel.
- if the brake pedal is still low or feels spongy, check the wheel bearings.

For slow or incomplete brake pedal return concern:
- Inspect for binding. damage, correct installation or interference at the brake pedal.
- Check the power brake booster for binding, damage and correct installation.

For a vibration concern when brakes are applied:
- Road test the vehicle.
- Apply the brakes and try to determine if the vibration is from the front or rear of the vehicle.
- If vibration can be felt from the rear of the vehicle, use a hub-mount brake lathe to machine the rear disc brake rotors if final thickness will be within specification. Ford recommends on-vehicle rotor machining. Follow the lathe manufacturer's instructions. Retest the vehicle for normal operation.
- If vibration is felt from the front of the vehicle, use a hub-mount brake lathe to machine the front disc brake rotors. Ford recommends on-vehicle rotor machining. Follow the lathe manufacturer's instructions. Retest the vehicle for normal operation.
- If the vibration location cannot be determined, use a hub-mount brake lathe to machine the front disc brake rotors if final thickness will be within specification. Ford recommends on-vehicle rotor machining. Follow he lathe manufacturer's instructions. Retest the vehicle. If there is still vibration during braking, use a hub-mount brake lathe to machine the rear disc brake rotors if final thickness will be within specification. Retest the vehicle.
- If vibration is still present. Check the front and rear wheel bearings for wear, damage and correct installation.