Comparison of Wound Certification Programs*. Updated 6/8/2006. *References: www.wocncb.org; www.aawm.org; www.wcei.net; http://www.nawccb.org/certification.html. Provider. Wound, Ostomy and Continence Nursing. Certification Board. Wound Care Education Institute American Academy of Wound Management.
The metal rotor that the brake pads squeeze together can sometimes vibrate, causing a squeaking noise. Luckily, there are several ways to fix this: 1  Use a milk spray, lotion or cream on the back of the pads [source: Allen].  Use sandpaper to sand off surface hardening of the brake pad/shoe surface.
Unfortunately, the master cylinder can wear out. When it does, it can leak brake fluid, causing a drop in hydraulic pressure to the brakes. A soft brake pedal is the result of a loss of hydraulic pressure. You should have your vehicle seen by a mechanic immediately if your master cylinder is worn out or leaking.