②Aperture of brake drum and
brake pad is too big
③Brake drum and brake hoof
contacts badly
④Abrasion of brake drum and
brake hoop is great
⑤Brake main pump is
damaged or leaks oil
⑥Brake branch pump is
damaged or leaks oil
⑦Brake liquid is short
⑧Brake pipeline has air
⑨Arrester is too hot
①Some brake drums and
hoofs have oil stain
②Gap of brake drum and
brake hoof is not even
③Individual brake branch
pump leaks oil or is
blocked
④Air pressure in left and
right tire is not even
⑤Front wheel adjustment is
wrong
⑥Vehicle frame is distorted,
and left and right
wheelbase is different
⑦Some brake pipelines is not
smooth
⑧Individual brake drum and
brake hoof contacts badly
⑨Suspension parts loose