Common noise and failure of diagram brake pads

Noise type

High -frequency scream

High frequency sound sounds sharp. When the brake disk is the same as the vibration frequency of the brake film, they resonate the scream.
Check the calipers: whether the guide rail is smooth and the piston oil seal is damaged.
Check whether all noise clips and brake films are suitable and installed correctly.
Check whether the brake sheet is too smooth and excessively used.

Low frequency howling

Generally referred to as caliper noise
Caused by caliper components
may also be caused by the vibration of the suspension system
New car calipers or suspension systems have slight vibrations
Early morning sensitivity, such as winter and early morning, especially
Checking calipers, suspension systems and jerseys

Dull Echo

Generally produced in the pedal relaxation
easily leads to the steering wheel Judging
New models are prone to this kind of problem
Caused by the difference in the thickness of the brake disk
Maintain the ball cage connector
Check the degree of dynamic film wear

After the dynamic disk is abnormal [ 123]
Reason

The surface of the brake disk is dirty
The density density of the brake disk is uneven
Excessive working temperature
The torque installation of the brake disk is not matched

] Check

Before replacing the brake film, check the brake disk
Check the thickness of the brake disc
Re -install the fixed brake bolt
Measure the surface flatness of the brake plate [ 123]

Case 1

Appearance: Local light of the friction material
Reason: Pistons work different axes; brake film friction material density is uneven.
Impact: The brakes wear fast, local wear of the brake disc.
Measures: Adjust the piston inspection sealing and replace the brake film.

Case 2

Appearance: The friction material has oil pollution
Reason: during maintenance or maintenance
Impact: unbalanced power of the coaxial axis, braking running partial
Measures: Replace the brake film

Case III

appearance: The edge of the friction material is worn into arcs or grooves.
Reason: During the brake disc, severe wear, human factors.
Impact: Auto jitter, abnormal noise, brake film abnormality.
Measures: Use the abandoned brake film to polish the brake plate edge of the brake disk until there is no groove to eliminate the chamfer. If necessary, replace the brake disk
Case 4

Reason: between brake disc and brake filmThere are mixed objects
Impact: noise, damage braking disk during braking
measures: change brake disk and brake film in severe cases

Case 5

Appearance: There are foreign bodies in the friction material
Reason: cannot prevent
Impact: car abnormal noise, damage brake disk
measures: replace the brake tablet, the brake disc groove obviously needs to be replaced

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