Page 73 - Manual_Polaris_RZR_ProXP-20-21

GENERAL INFORMATION

BRAKE SYSTEM DIAGNOSTICS

BRAKE NOISE TROUBLESHOOTING 1
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, Permatex™ Disc Brake Quiet 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 REMEDY
Spray disc and pads with CRC Brakleen™ or an
equivalent non-flammable aerosol brake cleaner.
Dirt, dust, or imbedded material on pads or disc
Remove pads and/or disc hub to clean imbedded
material from disc or pads.
Pad(s) dragging on disc due to:
Improper adjustment Adjust pad stop
Master cylinder reservoir overfilled Set to proper level
Master cylinder compensating port restricted Clean compensating port
Master cylinder piston not returning completely Inspect. Repair as necessary
Caliper piston(s) not returning Clean piston(s) seal
Operator error (riding the brake) Educate operator
Check wheel and hub for abnormal movement. Check
Loose wheel hub or bearings
axle nut torque. Inspect/replace bearing if needed.
Brake disc warped or excessively worn Replace disc
Brake disc misaligned or loose Inspect and repair as necessary

If noise does not change when brake is applied check
Noise is from other source (axle, hub, disc or wheel)
other sources. Inspect and repair as necessary
BRAKE VIBRATION

PEDAL / LEVER VIBRATION (VIBRATION IS ONLY FELT IN PEDAL OR LEVER WHILE BRAKING)

• Brake Disc worn (runout or thickness variance • Brake Pad wear (uneven / unusual wear)
exceeds service limit)
• Brake Disc damaged

VEHICLE VIBRATION (VIBRATION FELT THROUGH ENTIRE VEHICLE / CHASSIS WHILE BRAKING)

• Worn Suspension components • Alignment issues

9930583 R01 - 2020-2021 RZR PRO XP / XP 4 Service Manual 1.67
© Copyright Polaris Industries Inc.