Signs of bad rotors include vibration when the brake petal is depressed, and a visual inspection that reveals wear and tear. Rotors can be replaced or resurfaced unless they are under a certain thickness. A rotor that is too thin does not absorb the immense heat of the braking process and may crack or break while in use, causing brake failure.Continue Reading
According to experts at Tomorrow's Tech, "The bottom line here is this: if a customers vehicle has a pedal pulsation, the rotors need to be resurfaced or replaced. You also need to measure rotor runout on the vehicle to determine if the problem is the rotor or the hub, so the appropriate corrections can be made."
Runout occurs when the rotor wobbles as it spins and can be measured with a dial indicator.
Rotors should be replaced if hard spots or cracks are present but can be resurfaced when they are grooved. Hard spots and cracks indicate inevitable rotor failure and resurfacing is not recommended for these conditions. Grooving occurs naturally during the braking process over a period of time and, assuming that the rotor is of an appropriate thickness, most motorists choose to resurface rotors rather than replace them initially.Learn more about Brakes
The causes of rotor warping include manufacturing errors and improper bedding-in of rotors and brake pads. A faulty brake system impairs the functioning of the rotors, leading to warping.Full Answer >
Three online references for installing new brake rotors are AutoAnything, TopBrakes, and 2Carpros. All three of these guides feature step by step installation guides and graphics or video to assist with the task.Full Answer >
Brake pad thickness is important because, over time, the friction between the brake pads and the rotors wears down the pads, necessitating replacement. When brake pads are less than 3 mm thick, they should be replaced with fresh pads. Since they are always replaced in pairs, only one pad needs to be worn down to necessitate the replacement of both pads.Full Answer >
A typical brake system diagram shows the location and configuration of the master cylinder, the distribution of the lines, valves, hoses and cables, and the configurations of the discs and rotors. Other features of a brake system diagram include parking brake elements and vacuum components.Full Answer >