Phenomenon: when braking in the car driving, braking deceleration, braking distance.
Reasons:
skiving machine
(1) infiltration of air in the brake lines.
(2) The brake failure.
(3) Cylinder failure.
(4) Cylinder failure.
Diagnosis:bsp connector
Poor braking performance hydraulic brake system, generally based on the brake pedal travel (commonly known as the high, low), depress the brake pedal hard and soft feeling, the stability of the brake pedal and brake pedal increase the height to determine.
(1) Average brake pedal height is too low, poor braking performance. Straight legs or kicks brake pedal height with increased and improved braking performance, the brake drum and friction plate or master cylinder piston and putting the gap is too large.
(2) continuous Jijiao brake pedal height low and soft, the total oil feed hole in the accumulator chamber threaded plug vent hole clogging.
(3) consecutive kicks brake pedal height is still too low, and after the second foot brake master cylinder piston am not back a bit, the brake pedal, the master cylinder push rod and piston crashing sound master cylinder cup rupture or the continuous kicks, the return spring is too soft.
(4) consecutive kicks, the pedal were riding in the end, and feel the pedal without any reaction force, the master cylinder reservoir fluid indoor severe brake fluid loss.
(5) consecutive kicks when the brake pedal height slightly increased, and playing the sexy penetrate the air in the brake lines.
(6) maintain brake pedal height slow or rapid decline, the brake lines somewhere rupture, bad joints airtight or wheel cylinder cup seal bad, its return spring is too soft or broken, or the master cylinder leather bowl, apron seal bad, bad oil return valve and a valve. First, the brake pedal can observe whether the brake fluid leakage area. If the external normal, you should check the slave cylinder or master cylinder failure.
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(7) one foot or two feet brake pedal height appropriate bad too hard braking performance. Should check the wheel friction plate and drum gap is too small in the high-speed improper. If the gap is normal, check the drum wall and the surface condition of the friction plate. As normal, and then check whether the brake shoe springs excellent master cylinder or wheel cylinder sleeves swollen, the piston and cylinder wall tie whether Songkuang the. Such as normal, and should thus check whether the brake hose aging is not smooth.
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