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:

    Introduction
    WARNINGDisc brake components rarely require disassembly. Therefore, always follow these preventive measures: Never disassemble brake components unless absolutely necessary. If any connection on the hydraulic brake system is disconnected, the entire brake sy ...

    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 piston from the brake caliper. WARNING Cover the brake caliper piston with a rag. Be careful no ...

    Checking the clutch plates
    The following procedure applies to all of the clutch plates. 1. Check: Clutch plate Damage Replace the clutch plates as a set. 2. Measure: Clutch plate warpage (with a surface plate and thickness gauge "1") Out of specification Replace the clutch plates as a set. ...

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