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 ...

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    1. Lubricate: Rocker arms Rocker arm shafts 2. Lubricate: Camshaft 3. Install: Camshaft "1" NOTE: Make sure that the camshaft projections "a" and hole "b" are positioned as shown in the illustration. 4. Install: Rocker arms Rocker arm shafts "1" NOTE: Make ...

    Front wheel
    To remove the front wheel WARNING To avoid injury, securely support the vehicle so there is no danger of it falling over. Loosen the front wheel axle pinch bolt, then the wheel axle and the brake caliper bolts. Front wheel axle pinch bolt Lift the front wheel of ...

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