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

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

1. Install:

  • Brake caliper "1"

  • Copper washers
  • Brake hose "2"
  • Union bolt "3"

WARNING

Proper brake hose routing is essential to insure safe vehicle operation. Refer to "CABLE ROUTING" on page 2-33.

CAUTION:

When installing the brake hose onto the brake caliper, be sure to position the brake pipe "a" into the slot "b" in the brake caliper.

Installing the rear brake caliper


2. Install:

  • Brake pad spring
  • Brake pads
  • Brake pad retaining bolts
  • Rear brake caliper Refer to "REPLACING THE REAR BRAKE PADS" on page 4-33.

3. Install:

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

4. Fill:

  • Brake fluid reservoir (with the specified amount of the recommended brake fluid)

WARNING
  • Use only the designated brake fluid. Other brake fluids may cause the rubber seals to deteriorate, causing leakage and poor brake performance.
  • Refill with the same type of brake fluid that is already in the system. Mixing brake fluids may result in a harmful chemical reaction, leading to poor brake performance.
  • When refilling, be careful that water does not enter the brake fluid reservoir. Water will significantly lower the boiling point of the brake fluid and could cause vapor lock.
CAUTION:

Brake fluid may damage painted surfaces and plastic parts. Therefore, always clean up any spilt brake fluid immediately.

5. Bleed:

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

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.

Installing the rear brake caliper


7. Check:

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

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

    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 ...

    Removing the rear brake master cylinder
    NOTE: Before removing the rear brake master cylinder, drain the brake fluid from the entire brake system. 1. Disconnect: Rear brake light switch coupler 2. Loosen: Rear brake light switc ...

    Other materials:

    Installing the starter clutch
    1. Install: Starter clutch assembly Starter clutch bolts "1" NOTE: While holding the generator rotor "2" with the sheave holder "3", tighten the starter clutch bolts. Do not allow the sheave holder to touch the projection on the generator rotor. Stake the end "a" of each start ...

    Removing the throttle body
    1. Extract the fuel in the fuel tank through the fuel tank filler hole with a pump. 2. Disconnect: Fuel hose WARNINGCover the fuel hose connections with a cloth when disconnecting them. Residual pressure in the fuel lines could cause fuel to spurt out when removing the h ...

    Checking the primary driven gear
    1. Check: Primary driven gear "1" Damage/wear Replace the primary drive gear and clutch housing as a set. Excessive noise during operation  Replace the primary drive gear and clutch housing as a set. ...

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