Ford Focus manuals

Ford Focus Service Manual: Inspection And Verification

Ford Focus Service Manual / Chassis / Brakes / Inspection And Verification

Item Specification
Motorcraft® High Performance DOT 3 Motor Vehicle Brake Fluid (US) / Motorcraft® Brake Fluid - Heavy Duty DOT 3 (Canada) PM-1-C (US); CPM-1-C (Canada) WSS-M6C62-A or WSS-M6C65-A1

WARNING: Do not use
any fluid other than clean brake fluid meeting manufacturer's specification. Additionally, do not use brake fluid that has been previously drained. Following these instructions will help prevent system contamination, brake component damage and the risk of serious personal injury.

WARNING: Carefully
read cautionary information on product label. For emergency medical information seek medical advice. In the USA or Canada on Ford/Motorcraft products call: 1-800-959-3673. For additional information, consult the product Material Safety Data Sheet (MSDS) if available. Failure to follow these instructions may result in serious personal injury.

NOTICE: Blistering or swelling of rubber brake components can indicate contamination of the brake fluid by a petroleum-based substance. The entire hydraulic brake system must be flushed with clean, specified brake fluid and contaminated rubber components must be replaced to prevent recontamination.

NOTICE: Do not spill brake fluid on painted or plastic surfaces or damage to the surface may occur. If brake fluid is spilled onto a painted or plastic surface, immediately wash the surface with water.

The first indication that something may be wrong in the brake system is a change in the feel through the brake pedal. The brake warning indicator in the Instrument Cluster (IC) and the brake fluid level in the brake master cylinder reservoir are also indicators of system concerns.

If a wheel is locked and the vehicle must be moved, open a bleeder screw at the locked wheel to let out enough fluid to relieve the pressure. Close the bleeder screw. If multiple wheels are locked, check the brake pedal free play to verify brake pedal is not partially applied. These operations may release the brakes, but will not correct the concern. If this does not relieve the locked wheel condition, repair the locked components before proceeding.

  1. Verify the customer concern.
    • For parking brake concerns, refer to Section  206-05.
    • For ABS concerns, refer to Section  206-09.
    • For all other concerns, continue with the next step.
  1. Visually inspect for obvious signs of mechanical or electrical damage.

  Visual Inspection Chart

Mechanical Electrical
  • Brake fluid level and condition
  • Brake master cylinder
  • Brake master cylinder reservoir
  • Brake booster
  • Brake booster check valve
  • Brake booster vacuum hose
  • Brake hoses and tubes
  • Brake caliper, guide pins and anchor plate
  • Brake discs/drums
  • Brake pads/shoes
  • Brake pedal, bracket and booster linkage
  • Aftermarket modifications
  • Brake fluid level switch
  • Parking brake switch
  • Wiring, terminals or connectors

  1. Visually inspect the suspension system and tires for obvious signs of wear or damage.
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the cause is not visually evident, GO to Symptom Chart — Brake System or GO to Symptom Chart — NVH.
Hydraulic Control Unit (HCU)
Special Tool(s) Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool Material ...

Principles of Operation
Brake System Applying the brake pedal uses lever action to push a rod into the brake booster which, through the use of vacuum, boosts the force of the rod and then transmits this force into the ...

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