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BRAKES
Brake Noise
Brake Noise Troubleshooting
Dirt or dust buildup on the brake pads and disc is the most common cause of brake noise (squeal caused by
vibration). If cleaning does not reduce the occurrence of brake noise, Permatext Disc Brake Quiet (available
from most auto parts stores) can be applied to the back of the pads. Follow directions on the package. This will
keep pads in contact with caliper piston(s) to reduce the chance of squeaks caused by dirt or dust.
Possible Cause
Dirt, dust, or imbedded material on pads or disc
Pad(s) dragging on disc (noise or premature pad wear)
Improper adjustment
Insufficient lever or pedal clearance
Master cylinder reservoir overfilled
Master cylinder compensating port restricted
Master cylinder piston not returning completely
Caliper piston(s) not returning
Operator error (riding the brake / park brake
applied)
Loose wheel hub or bearings
Brake disc warped or excessively worn
Brake disc misaligned or loose
Noise is from other source (chain, axle, hub, disc or
wheel)
Wrong pad for conditions
4/99
Brake Noise Troubleshooting
Spray disc and pads with CRC Brakeleent or an
equivalent non-flammable aerosol brake cleaner. Re-
move pads and/or disc hub to clean imbedded material
from disc or pads.
Adjust pad stop (front calipers) or adjust auxiliary brake
Check position of controls & switches.
Set to proper level
Clean compensating port
Inspect. Repair as necessary
Clean piston(s) seal
Educate operator
Check wheel and hub for abnormal movement.
Replace disc
Inspect and repair as necessary
If noise does not change when brake is applied check
other sources. Inspect and repair as necessary
Change to a softer or harder pad
9.4
Remedy
Polaris Sales Inc.
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Table of Contents
Troubleshooting
