8-53 Periodic Maintenance and Adjustment
Table 2：Solution of Common Problems in Brake System.
S/N Problems Solutions
1
Brake system is locked
up.
1. Check if the handle of parking brake return to its position.
2. Check if the brake discs are bent or deformed.
3. Check if the calipers' hydraulic cylinders are stuck or the
fasteners are bent.
2
Brake performance is
diminished.
1. Check if the brake discs are over-worn.
2. Check if the brake blocks in calipers are over-worn, or
contaminated by dirt or debris that can reduce friction.
3. Check if there is any leakage in brake system's oil lines or
junctions.
4. Check if the post rod in brake master cylinder is bent.
5. Check if there is any air going into the oil lines, and drain
the air with special equipment.
6. Check if the remaining oil in master cylinders of front and
rear brake is still above the lowest level.
3
Front or rear brake
system makes unusual
noise.
1. Check if the brake discs are bent or warped.
2. Check if the calipers' hydraulic cylinders are stuck or the
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