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:

    Special tools
    The following special tools are necessary for complete and accurate tune-up and assembly. Use only the appropriate special tools as this will help prevent damage caused by the use of inappropriate tools or improvised techniques. Special tools, part numbers or both may differ depending on the ...

    Replacing the front brake pads
    NOTE: When replacing the brake pads, it is not necessary to disconnect the brake hose or disassemble the brake caliper. 1. Measure: Brake pad wear limit "a" Out of specification Replace the brake pads as a set. 2. Install: Brake pad support Brake pad spring Brake pads ...

    Removing the fuel tank
    1. Extract the fuel in the fuel tank through the fuel tank filler hole with a pump. 2. Remove: Fuel hose connector cover "1" 3. Disconnect: Fuel hose "2" CAUTION: Be sure to disconnect the fuel hose by hand. Do not forcefully disconnect the hose with tools. A ...

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