LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 621 (Brake System - General Information) >> Diagnosis And Testing >> Brake System >> Pinpoint Tests >> Pinpoint Test A: Vibration When Brakes Are Applied >> Pinpoint Test A: Vibration When Brakes Are Applied

Pinpoint Test A: Vibration When Brakes Are Applied

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 CHECK FOR TSBs 
    • Check the Technical Service Bulletins (TSBs) for applicable brake concerns.
    • Is there applicable information available on OASIS or in a TSB? 

    Yes  : REFER to TSBs . CARRY OUT any necessary repairs that are indicated by the TSB. If the concern is still present, GO to A2.

    No  : GO to A2.

  2. A2 ROAD TEST THE VEHICLE - LIGHT BRAKING 
    • Inspect the wheels and tires. Refer to WHEELS & TIRES .
    • Road test the vehicle. Warm the brakes by slowing the vehicle from 80 to 32 km/h (50 to 20 mph) using light brake force. At highway speeds of 89-97 km/h (55-60 mph), apply the brake using light pedal force.
    • Is there a vibration/shudder felt in the steering wheel, seat or brake pedal? 

    Yes  : GO to  A5.

    No  : GO to A3.

  3. A3 ROAD TEST THE VEHICLE - MODERATE TO HEAVY BRAKING 
    • Road test the vehicle. At highway speeds of 89-97 km/h (55-60 mph), apply the brakes using moderate to heavy pedal force.
    • Is there a vibration/shudder? 

    Yes  : GO to A4.

    No  : The concern is not present at this time.

  4. A4 NORMAL ACTUATION OF THE ABS SYSTEM DIAGNOSIS 
    • During moderate to heavy braking, noise from the HCU and pulsation in the brake pedal can be observed. Pedal pulsation coupled with noise during heavy braking or on loose gravel, bumps, wet or snowy surfaces is acceptable and indicates correct functioning of the ABS. Pedal pulsation or steering wheel nibble (frequency is proportional to the vehicle speed) indicates a concern with a brake or suspension component.
    • Is the vibration/shudder vehicle speed sensitive? 

    Yes  : GO to A5.

    No  : The concern is not present at this time.

  5. A5 CHECK THE FRONT SUSPENSION 

    Yes  : GO to A6.

    No  : REPAIR or INSTALL new components as necessary. REFER to FRONT SUSPENSION . TEST the system for normal operation.

  6. A6 RESURFACE THE FRONT BRAKE DISCS 
    CAUTION: Do not use a bench lathe to machine the brake discs.
    NOTE: Follow the manufacturer's instructions to machine the brake discs. After machining, make sure the brake disc meets the thickness specification. Refer to FRONT DISC BRAKE .
    • Resurface the front brake discs.
    • Road test the vehicle.
    • Is the vibration/shudder present? 

    Yes  : GO to A7.

    No  : The concern is not present at this time.

  7. A7 CHECK THE REAR SUSPENSION 

    Yes  : GO to A8.

    No  : REPAIR or INSTALL new components as necessary. REFER to REAR SUSPENSION . TEST the system for normal operation.

  8. A8 RESURFACE THE REAR BRAKE DISCS 
    CAUTION: Do not use a bench lathe to machine the brake discs.
    NOTE: Follow the manufacturer's instructions to machine the brake discs. After machining, make sure the brake disc meets the thickness specification. Refer to REAR DISC BRAKE .
    • Resurface the rear brake discs.
    • Road test the vehicle.
    • Is the vibration/shudder present? 

    Yes  : REFER to NOISE, VIBRATION & HARSHNESS .

    No  : The concern is not present at this time.

scientia non olet · About LEMON Manuals