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Disassembly and Assembly (for AWD Models): Assembly

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • Never use mineral oils such as kerosene or gasoline during the cleaning and assembly processes.
  • Make sure that there is no foreign material such as dirt and dust on the inner wall of cylinder, piston, and piston cup. Be careful not to damage parts with a service tool when assembling.
  • Do not drop parts. Do not use any dropped parts.
  1. Apply brake fluid to the inner wall of cylinder body, primary piston assembly and secondary piston assembly.
  2. Insert secondary piston and primary piston assembly into cylinder body in this order.
    Fig 1: Identifying Secondary Piston And Primary Piston
    G04121947Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • Do not reuse primary and secondary piston assemblies.
    • Always replace inner kit as a set.
    • Pay attention to the orientation of piston cup, and insert straight to prevent cup from being caught by the inner wall of cylinder.
  3. Set the slit of secondary piston towards the piston stopper mounting hole of cylinder body. And then install the piston stopper through the slit of secondary piston.
    Fig 2: Installing Piston Stopper
    G04121948Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Insert plate and guide assembly into cylinder body.
    CAUTION:
    • Be careful not to damage rod of primary piston.
    • Pay attention to the orientation of guide assembly.
    • Do not drop O-ring.
    • Be careful the guide and/or plate are not inserted at an angle to cylinder inner wall.
      Fig 3: Inserting Plate And Guide Assembly Into Cylinder Body
      G04121949Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Be careful not to damage rod of primary piston with the cloth. Then insert snap ring to cylinder body with pushing primary piston.
    CAUTION:
    • Make sure that snap ring is securely engaged in cylinder body inner diameter groove.
    • Do not reuse snap ring.
      Fig 4: Inserting Snap Ring
      G04121950Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Apply brake fluid to a grommet, and press it into master cylinder to install.
    CAUTION: Do not reuse grommet.
  7. Install reservoir tank to master cylinder.
    CAUTION: Pay attention to the orientation of reservoir tank.
    Fig 5: Checking Orientation Of Reservoir Tank
    G04121951Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Secure flange of cylinder body as shown in the figure.
    CAUTION:
    • Using copper plate or cloth to cover flange for securing in the vise.
    • When securing master cylinder assembly in a vise, be sure not to over tighten.
    • Be sure to secure the flange part with the brake tube installation side down.
      Fig 6: Securing Flange Of Cylinder Body In Vise
      G04121952Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Using a pin punch [commercial service tool: diameter approx. 4 mm (0.16 in)], insert the reservoir tank mounting pin into the pin hole so that the insertion side and the opposite side are identical.
    CAUTION:
    • Pay attention to the orientation of piston cup, and insert straight to prevent cup from being caught by the inner wall of cylinder.
      Fig 7: Inserting Reservoir Tank Mounting Pin
      G04121953Courtesy of NISSAN MOTOR CO., U.S.A.