Motorcycle rear brake has abnormal sound
Check the sensitivity on the brakes
It is estimated that the hub eccentricity problem
This kind of grumble sound should be the sound of the valve system, the mandrel engine if the idle speed will be low in the idle when similar to this kind of grumble sound, but generally the fuel door will disappear. If you confirm that the sound is the engine came out, then most likely their voice. Check the oil pump fuel supply is normal, there is no less than the situation, re-adjust the valve clearance, not too large or too small, if necessary, you can replace a set of valve stem and the upper and lower rocker try, There may be a certain speed, the valve stem will have irregular changes, causing such a similar friction sound. This situation is not necessarily a component damage, and more like a result of the manufacturing process is not high caused by a benign (not necessarily damaged) sound.
You are the brake pads produced by the wear of asbestos dust between the brake pads and the hub and then by the brake when the brake pads on the pressure and temperature in the brake pad surface to form a hard enamel, so when the brakes issued a harsh sound. Solution: in the friction surface of the brake pads with a saw a few grooves, so that the brakes in the brake drum when there is a swing of the air brake pads into the tank was swept away the air. You must change the white color of the kind of brake pads, the kind of hard brake pads, you change a red color of the soft brake with a slot is absolutely no problem.
