Check whether the brake disc is installed correctly. If it is installed incorrectly, the heat
dissipation and circulation system of the brake disc will fail, causing metal expansion
and affecting the braking performance
The 0-100km jitter is caused by the deformation of the closing head, which is caused
by the uneven and unclean installation surface of the central circle of the vehicle horn
and the closing head, or the quality of the closing head itself is not up to standard
When stepping on the brake, it may be that the surface of the brake disc is unbalanced.
Use a dial indicator to measure it (commonly known as playing the meter), and adjust
it according to the situation. If the problem is not solved, the brake disc can be polished
Check the brake skin. If the brake skin is used violently in the opening stage, the surface
of the brake skin will be carbonized, and there is no braking effect. The pads can be
replaced
Cause: the parallelism difference of the brake disc will cause jitter if the meter runout
exceeds 0.04mm
Solution 1: lathe or professional CD player light up the lower disc
Solution 2: replace the high-precision brake disc belt fitting
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