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

Yamaha YZF-R125 Service Manual / Chassis / Rear brake / Checking the rear brake caliper

Checking the rear brake caliper


1. Check:

  • Brake caliper piston "1" Rust/scratches/wear Replace the
    brake caliper piston.
  • Brake caliper cylinder "2" Scratches/wear Replace the
    brake caliper assembly.
  • Brake caliper body "3" Cracks/damage   Replace the
    brake caliper assembly.
  • Brake fluid delivery passages (brake caliper body)Obstruction
    Blow out with compressed air.

    Obstruction Blow out with compressed air.


WARNING

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

2. Check:

  • Brake caliper bracket Cracks/damage  Replace.

    Disassembling the rear brake caliper
    1. Remove: Brake caliper piston "1" Brake caliper piston dust seal "2" Brake caliper piston seal "3" a. Blow compressed air into the brake hose joint opening "a" to force out the pisto ...

    Assembling the rear 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:

    Handlebar switches
    Left Left 1. Pass switch "PASS" 2. Dimmer switch "/" 3. Turn signal switch "/" 4. Horn switch"" Right Right Engine stop switch "/" Start switch"" Pass switch "PASS" Press this switch to flash the headlight. Dimmer switch "/" Set this switch to"" for the high beam an ...

    Adjusting the drive chain slack
    NOTE: The drive chain slack must be checked at the tightest point on the chain. CAUTION:A drive chain that is too tight will overload the engine and other vital parts, and one that is too loose can skip and damage the swingarm or cause an accident. Therefore, keep the drive ...

    Removing the generator
    1. Remove: Generator rotor nut "1" Washer NOTE: While holding the generator rotor "2" with the sheave holder "3", loosen the generator rotor nut. Do not allow the sheave holder to touch the projection on the generator rotor. 2. Remove: Generator rotor "1" (with the ...

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