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:

    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 the brake hose into a container and pump out the brake fluid carefully. ...

    Faulty front fork legs
    Leaking oil - Bent, damaged or rusty inner tube - Cracked or damaged outer tube - Improperly installed oil seal - Damaged oil seal lip - Incorrect oil level (high) - Loose damper rod assembly bolt - Damaged damper rod assembly bolt copper washer - Cracked or damaged front fork cap O-ring M ...

    Removing the handlebars
    1. Stand the vehicle on a level surface. WARNINGSecurely support the vehicle so that there is no danger of it falling over. 2. Remove: Handlebar grip "1" NOTE: Blow compressed air between the handlebar and the handlebar grip, and gradually push the grip off the handleb ...

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