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Master Cylinder Replacement

WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid gets on the paint, wash it off immediately with water.
  • Be careful not to damage or deform the brake lines during removal and installation.
  • To prevent the brake fluid from flowing, plug and cover the hose ends and joints with a shop towel or equivalent.
  1. Lower the vehicle to the ground.
  2. Remove the covers (A) in the engine compartment.
    Fig 1: Identifying Covers In Engine Compartment
    G05461816Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Remove the under-hood fuse/relay box (A), and move it aside.
    Fig 2: Under-Hood Fuse/Relay Box With Torque Specifications
    G05461817Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Remove the engine wire harness clamp (A) from the strut brace.
    Fig 3: Engine Wire Harness Clamp With Torque Specifications
    G05461818Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. Remove the accelerator pedal position (APP) sensor mounting bolt (A) from the strut brace.
    Fig 4: Accelerator Pedal Position Sensor Mounting Bolt With Torque Specifications
    G05461819Courtesy of AMERICAN HONDA MOTOR CO., INC.
  6. With the vehicle on the ground, remove the strut brace (A).
    Fig 5: Strut Brace With Torque Specifications
    G05461820Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Remove the reservoir cap and the brake fluid from the master cylinder reservoir with a syringe.
  8. Disconnect the brake fluid level switch connector (A).
    Fig 6: Brake Fluid Level Switch Connector, Brake Lines And Master Cylinder With Torque Specifications
    G05461821Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. Disconnect the brake lines (B) from the master cylinder (C). To prevent spills, cover the hose joints with rags or shop towels.
    NOTE: Do not spill brake fluid on the vehicle; it may damage the paint; if brake fluid does contact the paint, wash it off immediately with water.
  10. Remove the master cylinder mounting nuts (D) and washers.
  11. Remove the master cylinder from the brake booster (E). Be careful not to bend or damage the brake lines when removing the master cylinder.
  12. Remove the rod seal (F) from the master cylinder.
  13. Install the master cylinder in the reverse order of removal, and note these items:
    • Replace all the rubber parts with new ones whenever the master cylinder is removed.
    • Use a new rod seal on reassembly.
    • Coat the inner bore lip and outer circumference of the new rod seal with the Shin-Etsu silicone grease (P/N 08798-9013).
    • Install the rod seal onto the master cylinder with its grooved side (G) toward the master cylinder.
    • Check the brake pedal height and free play after installing the master cylinder, and adjust it if necessary (see BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT  ).
  14. Bleed the brake system (see BRAKE SYSTEM BLEEDING  ).
  15. Spin the wheels to check for brake drag.
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