Yamaha YZF-R125 Service Manual: Replacing the rear brake pads

Yamaha YZF-R125 Service Manual / Chassis / Rear brake / Replacing the rear brake pads

NOTE:

When replacing the brake pads, it is not necessary to disconnect the brake hose or disassemble the brake caliper.

1. Remove:

  • Brake pads
  • Brake pad spring

NOTE:

To remove the inner brake pad "1", push down on the brake caliper bracket so that there is space to remove the brake pad.

Replacing the rear brake pads


2. Measure:

Brake pad wear limit "a" Out of specification → Replace the brake pads as a set.


Replacing the rear brake pads


3. Install:

  • Brake pad spring

  • Brake pads

NOTE:

Always install new brake pads and a new brake pad spring as a set.

a. Connect a clear plastic hose tightly to the bleed screw. Put the other end of the hose into an open container.

Replacing the rear brake pads


b. Loosen the bleed screw and push the brake caliper piston into the brake caliper with your finger.

c. Tighten the bleed screw.


d. Install a new brake pad spring "1" and new brake pads.

NOTE:

Install the brake pad spring as shown.


4. Install:

  • Brake pad retaining bolts
  • Brake caliper

5. Install:

  • Rear wheel Refer to "REAR WHEEL" on page 4-12.

6. Check:

  • Brake fluid level Below the minimum level mark "a"  Add the
    recommended brake fluid to the proper level.

    Refer to "CHECKING THE BRAKE FLUID LEVEL" on page 3-18.

Replacing the rear brake pads


7. Check:

  • Brake pedal operation Soft or spongy feeling Bleed
    the brake system.

    Refer to "BLEEDING THE HYDRAULIC BRAKE SYSTEM" on page 3-20.

    Checking the rear brake disc
    1. Remove: Rear wheel Refer to "REAR WHEEL" on page 4-12. 2. Check: Brake disc Damage/galling → Replace. 3. Measure: Brake disc deflection Out of specification → Correc ...

    Removing the rear brake caliper
    NOTE: Before disassembling the brake caliper, drain the brake fluid from the entire brake system. 1. Remove: Union bolt "1" Copper washers "2" Brake hose "3" NOTE: Put the end of th ...

    Other materials:

    Checking and lubricating the sidestand
    Checking and lubricating the sidestand The operation of the sidestand should be checked before each ride, and the sidestand pivot and metal-to-metal contact surfaces should be lubricated if necessary. WARNING If the sidestand does not move up and down smoothly, have a Yamaha deal ...

    Installing the radiator
    1. Fill: Cooling system (with the specified amount of the recommended coolant) Refer to "CHANGING THE COOLANT" on page 3-15. 2. Check: Cooling system Leaks Repair or replace any faulty part. 3. Measure: Radiator cap opening pressure Below the specified pressure Repla ...

    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 ...

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