Table 2：Check and Solution of Common Problems in Brake System .
Brake system is locked
up.
1．Check if the handle of parking brake return to its position.
2．Check if the brake discs are deformed.
3．Check if the calipers' hydraulic cylinders get stuck, or the
fixing parts of calipers are deformed.
brake performance goes
down.
1．Check if the brake disc are over-worn.
2．Check if the brake block in calipers are over-worn, or
contaminated by stuffs which can reduce friction.
3．Check if there is any leakage in brake system's oil lines or
conjunctions.
4． Check if the post rod in brake master cylinder is
deformed.
5．Check if there is any air go into the oil lines, and drain the
air with special equipment.
6．Check if the remain oil in master cylinders of front and
rear brake is still above the lowest level.
Front or rear brake
system makes affricate
noise, or the brake discs
go .
1．Check if the brake discs are deformed.
2．Check if the calipers' hydraulic cylinders get stuck, or the
fixing parts of calipers are deformed.
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