Brakes (A5)Pregunta 47 de 120
A brake pedal that slowly sinks to the floor while held under steady pressure most likely indicates:
a.Air in the lines only
b.Warped rotors
c.A failing master cylinder (internal leak)
d.Glazed brake pads
Explicación
A pedal that gradually falls under steady pressure indicates fluid bypassing internally in the master cylinder past worn seals. An external leak would lose fluid visibly. Replacing the master cylinder and bleeding the system restores a firm pedal.
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Preguntas relacionadas de este tema
- Technician A says a spongy brake pedal is commonly caused by air in the hydraulic system. Technician B says air in the lines increases braking power. Who is correct?
- Technician A says a pulsating brake pedal is usually caused by air in the hydraulic lines. Technician B says it is usually caused by rotor thickness variation or excessive lateral runout. Who is correct?
- The primary purpose of a brake power booster is to:
- The main function of an anti-lock brake system (ABS) is to:
- A wheel-speed sensor signal that is missing on one wheel will most likely cause the ABS to:
- Brake fluid is hygroscopic, which means it:
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