Shimano SM-BH59 Hydraulic Disc Brake Olive and Insert - SM-BH59

The olive and insert create a seal between the brake hose and the caliper or lever, preventing hydraulic fluid leaks and ensuring proper brake function.

Replace the olive and insert every time you disconnect a brake hose or notice any leaks. It is good practice to replace them during major brake servicing.

You will need a hose cutter, and a torque wrench. A compression tool might also be recommended.

No, it is recommended to replace the olive and insert each time you disconnect the hose to ensure a proper seal.

Overtightening can damage the olive and insert, leading to leaks and reduced brake performance.

The torque specification is usually printed on the brake components or can be found in the Shimano documentation.

Yes, different Shimano brake systems may use different sizes of olives and inserts. Always use the correct size for your system.

Check for leaks around the olive and insert connections. If a leak is present, tighten the fitting to the correct torque or replace the olive and insert.

Ensure the olive and insert are properly installed and the compression fitting is tightened to the correct torque. Replace the olive and insert if necessary.

Make sure the hose cut is clean and square. Use the correct tools to compress the olive and insert.