Brake Bleeding Tools & Hydraulic Diagnostics

What symptom indicates an internal collapse of a flexible rubber brake hose?

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 Correct IncorrectThe internal rubber flap acts as a one-way check valve: fluid pumps to the caliper, but cannot return, causing the brake to drag and overheat, sometimes to the point of smoking.

What symptom indicates an internal collapse of a flexible rubber brake hose?

• The caliper locks up and drags because fluid cannot return through the collapsed internal one-way flap
• The brake fluid turns fluorescent green
• The brake pedal vibrates like an earthquake
• The steering wheel turns backwards