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Home >> Ford >> 2004 >> Escape 3.0 1, FWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc Brakes & Drum Brakes >> Testing >> Vacuum Booster Check Valve

Vacuum Booster Check Valve

  1. Remove the vacuum booster hose from the power brake booster.
  2. Apply 17 in. Hg (57.3 kPa) of vacuum to the vacuum booster hose. If the vacuum does not leak off after ten minutes, the check valve is okay. Otherwise, install a new check valve.
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