Yamaha YZF-R125 Service Manual: Checking the front brake caliper

Yamaha YZF-R125 Service Manual / Chassis / Front brake / Checking the front brake caliper

Checking the front brake caliper


1. Check:

  • Brake caliper pistons "1" Rust/scratches/wear Replace the
    brake caliper assembly.
  • Brake caliper body "2" Cracks/damage Replace the brake
    caliper assembly.
  • Brake fluid delivery passages (brake caliper body) Obstruction Blow out with
    compressed air.
WARNING

Whenever a brake caliper is disassembled, replace the brake caliper piston dust seals and piston seals.

Checking the front brake caliper


2. Check:

  • Brake caliper bracket Cracks/damage Replace.

    Removing the front brake caliper
    NOTE: Before disassembling the brake caliper, drain the brake fluid from the entire brake system. 1. Remove: Brake hose union bolt "1" Copper washers "2" Brake hose "3" NOTE: Put the en ...

    Assembling the front brake caliper
    WARNING Before installation, all internal brake components should be cleaned and lubricated with clean or new brake fluid. Never use solvents on internal brake components as ...

    Other materials:

    Setting the diagnostic mode
    1. Set the main switch to "OFF" and the engine stop switch to " ". 2. Disconnect the self-diagnosis signal connector "1", and then connect the FI diagnostic tool "2" as shown. 3. Disconnect the fuel pump coupler. 4. While pressing the "MODE" button, set the main switch to "ON". NOTE: ...

    Checking and adjusting the steering head
    1. Stand the vehicle on a level surface WARNINGSecurely support the vehicle so that there is no danger of it falling over. NOTE: Place the vehicle on a suitable stand so that the front wheel is elevated. 2. Check: Steering head Grasp the bottom of the front fork legs an ...

    Installing the front wheel (disc)
    1. Install: Front brake disc NOTE: Be sure to install the front brake disc with the arrow mark "a" on the disc facing out. Tighten the brake disc bolts in stages and in a crisscross pattern. 2. Check: Front brake disc Refer to "CHECKING THE FRONT BRAKE DISC" on page 4 ...

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