Vehicle brakes need maintenance teach you how to diagnose faults Phenomenon: the car is in motion, or continuous kicks foot brake, the brake pedal was riding in the end diagnostic tool, brake suddenly failed. The reason: 1, brake fluid in the master cylinder. 2, master cylinder cup damaged or riding turn. 3, Cylinder sleeves damaged or riding turn. 4, brake pipe rupture or severe joint disjointed. Diagnosis: brake hydraulic brake system produces bad performance reasons, generally based on the brake pedal travel (commonly known as the high, low), depress the brake pedal feels soft and hard, and stability after the brake pedal and the brake judged by the height of the pedal. 1, general brake pedal height is too low, poor braking performance. Such as continuous feet or kicks the brake pedal height will be increased and improved braking performance, indicating the brake drum and friction plates or the master cylinder piston and plunger gap is too large. 2, while maintaining brake pedal height if slow or rapid decline, indicating that the brake pipe burst somewhere, bad joints sealed or wheel cylinder cup seal is bad, its return spring is too soft or broken, or master cylinder cup ds708, apron seal bad, bad oil return valve and the valve. First, the brake pedal can observe whether the brake fluid leakage site. If the external normal, you should check the wheel cylinder or master cylinder failure. 3, consecutive kicks brake pedal height is still too low, and in the second foot brake, the master cylinder piston was not back position, depress the brake pedal master cylinder push rod and piston that is crashing sound, is master cylinder cup cracked or return spring is too soft. 4, consecutive kicks brake pedal height is slightly increased, and a bomb sexy, indicating the brake pipe into the air. 5, consecutive kicks, pedal were riding in the end, and felt no pedal reaction force, indicating that the master cylinder brake fluid reservoir indoor serious losses. 6, consecutive kick when the brake pedal height is low and soft is the total liquid chamber into the hole in the plug vent blockage. 7, foot or feet break pedal height appropriate, but too hard braking performance is poor. It should check whether the gap between each wheel friction plate and the drum is too small. If the gap is normal, check the drum wall and the friction plate surface condition. Such as normal, then check the brake shoe springs are excellent, master cylinder or wheel cylinder cups are swollen, the piston and the cylinder wall with whether fit. As are normal, you should then check the brake hose is aging is not smooth. Some car diagnostic tools can help you test your car by yourself, such as: Autel Maxisys MS908, MaxiDAS DS708 Tool, Autel Maxidiag MD802 and so on. If you want to know some car maintenance information, please click the below information: Better Website
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