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Master Cylinder Replacement

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.
NOTE:
  • Be careful not to damage or bend the brake lines during removal and installation.
  • After removal, plug the ends of the hoses and joints to prevent spilling brake fluid.
  1. Remove the air cleaner (see AIR CLEANER ELEMENT INSPECTION/REPLACEMENT ).
  2. Remove the IMA motor power cable clamps (A) from the IMA motor power cable bracket.
    Fig 1: Identifying IMA Motor Power Cable Clamps
    G06953132Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Remove the reservoir tank cap, then remove the brake fluid from the reservoir tank with a syringe.
  4. Disconnect the brake fluid level switch connector (A).
    Fig 2: Brake Fluid Level Switch Connector And Reservoir Tank Mounting Bolt With Torque Specifications
    G06953133Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. Remove the reservoir tank mounting bolt (B).
  6. Disconnect the brake lines (A) from the master cylinder (B). To prevent spills, cover the hose joints with clean rags or shop towels.
    Fig 3: Brake Lines, Master Cylinder, Master Cylinder Mounting Nuts And Washers With Torque Specifications
    G06953134Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Remove the master cylinder mounting nuts (C) and the washers (D).
  8. Remove the master cylinder from the brake booster (E). Be careful not to bend or damage the brake lines when removing the master cylinder.
  9. Remove the rod seal (F) from the master cylinder.
    NOTE: During installation, set the new rod seal onto the master cylinder with its grooved side (G) toward the master cylinder.
  10. Install the master cylinder in the reverse order of removal, and note these items:
    • Coat the inner bore lip and the outer circumference of the new rod seal with the shin-etsu silicone grease (P/N 08798-9013).
    • Make sure not to get any silicone grease on the terminal part of the connectors and switches, especially if you have silicone grease on your hands or gloves.
    • 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/IDLE STOP SWITCH ADJUSTMENT  ).
  11. Bleed the brake system (see BRAKE SYSTEM BLEEDING  ).
  12. Spin the wheels to check for brake drag.
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