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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Conventional Brake System >> Vacuum Hose Removal/Installation (VIN 7 & VIN L) (Us) >> Between Vacuum Pump and Power Brake Unit >> Notes

Between Vacuum Pump and Power Brake Unit: Notes

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
  2. Remove the following parts as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION (VIN 7 & VIN L) (US) .)
    • Air hose
    • Air cleaner cover
    • Air cleaner element
    • Air cleaner case
    • Fresh-air duct
    • Resonance chamber
  3. Remove the battery. (See BATTERY REMOVAL/INSTALLATION (VIN 7 & VIN L) (US) .)
  4. Remove the battery tray and PCM component. (See BATTERY REMOVAL/INSTALLATION (VIN 7 & VIN L) (US) .)
  5. Set the PCM wiring harness out of the way.
  6. Disconnect the vacuum hose from the clip.
    G13558344Courtesy of MAZDA MOTORS CORP.
  7. Pinch open the clamps using pliers and disconnect the vacuum hose.
  8. Install in the reverse order of removal. (See VACUUM HOSE (BETWEEN VACUUM PUMP AND POWER BRAKE UNIT) INSTALLATION NOTE .)