#MasterCylinder

Calipers aren’t the only part of the brake system that will need to be rebuilt occasionally. The master cylinder, which powers the entire hydraulic system, needs attention from time to time. If it has a problem, you won’t get full performance from your brakes. The most common issue is a piston with a worn primary or secondary cup, which allows hydraulic fluid to flow past the seal, resulting in low braking power or leaking at the brake lever. The master cylinder also has several tiny orifices that, if they clog, can prevent proper operation of the brakes. If you have gone through the trouble of rebuilding the calipers, you should spend the extra time to clean and inspect the master cylinder.