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 the transmission
    1. Measure: Main axle runout (with a centering device and dial gauge "1") Out of specification Replace the main axle. 2. Measure: Drive axle runout (with a centering device and dial gauge "1") Out of specification Replace the drive axle. 3. Check: Transmiss ...

    Checking and adjusting the steering head
    1. Stand the vehicle on a level surface WARNINGSecurely support the vehicle so that there is no danger of it falling over. NOTE: Place the vehicle on a suitable stand so that the front wheel is elevated. 2. Check: Steering head Grasp the bottom of the front fork legs an ...

    Installing the shift forks and shift drum assembly
    1. Install: Shift fork-L "1" Shift fork-C "2" Shift fork-R "3" Shift drum assembly "4" Springs Shift fork guide bar "5" NOTE: The embossed marks on the shift forks should face towards the right side of the engine and be in the following sequence: "R", "C", "L". 2. Check: Tr ...

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