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:

    Multi-function display
    1. Multi-function display 2. "RESET/SELECT" button The multi-function display is equipped with the following: a speedometer (which shows the riding speed) an odometer (which shows the total distance traveled) two tripmeters (which show the distance traveled since they were last ...

    Checking the camshaft
    1. Check: Camshaft lobes Blue discoloration/pitting/scratches  Replace the camshaft. 2. Measure: Camshaft lobe dimensions "a" and "b" Out of specification Replace the camshaft. 3. Check: Camshaft oil passage Obstruction Blow out with compressed air. ...

    Self-diagnostic function table
    If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the ECU illuminates the engine trouble warning light and provides the engine with alternate operating instructions that are appropriate for the type of malfunction. When an abnormal signal is received fro ...

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