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Home >> Pontiac >> 1982 >> Grand Prix Base, 4.1L Eng VIN 4 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Power Brake Units - DELCO-Moraine Tandem Diaphragm >> Removal & Installation >> Power Brake Unit >> Removal

Power Brake Unit: Removal

  1. Without disconnecting hydraulic lines, remove master cylinder from power unit and position to one side. On models equipped with pipe distribution and switch mounting bolt, remove bolt before moving master cylinder away from power unit.
    CAUTION: Do not bend or kink hydraulic lines.
  2. Disconnect vacuum hose from check valve on front of power unit. Disconnect push rod from brake pedal.
    CAUTION: Do not force push rod to the side when disconnecting.
    Fig 1: Exploded View of Delco-Moraine Tandem Power Cylinder
    G09347571Courtesy of GENERAL MOTORS COMPANY
  3. Remove nuts mounting power unit to firewall and remove power unit.
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