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

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

1. Remove:

  • Brake caliper piston "1"
  • Brake caliper piston dust seal "2"
  • Brake caliper piston seal "3"

Disassembling the rear brake caliper


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 not to get injured when the piston is expelled from the brake caliper.

  • Never try to pry out the brake caliper piston.

Disassembling the rear brake caliper


b. Remove the brake caliper piston seal and dust seal.

    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 ...

    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 ...

    Other materials:

    Checking the fuses
    The following procedure applies to all of the fuses. CAUTION:To avoid a short circuit, always turn the main switch to "OFF" when checking or replacing a fuse. 1. Remove: Rider seat Refer to "GENERAL CHASSIS" on page 4-1. 2. Check: Fuse a. Connect the pocket te ...

    Checking the coolant temperature sensor
    1. Remove: Coolant temperature sensor WARNING Handle the coolant temperature sensor with special care. Never subject the coolant temperature sensor to strong shocks. If the coolant temperature sensor is dropped, replace it. 2. Check: Coolant temper ...

    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 ...

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