Polaris RANGER RZR 170 Service Manual

6.3
BRAKES
6
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.
BRAKE SYSTEM SERVICE NOTES
Disc brake systems are light weight, low maintenance, and perform well in the conditions this vehicle will routinely
encounter. There are a few things to remember when replacing disc brake pads or performing brake system service to
ensure proper system function and maximum pad service life.
• Use only genuine Pure Polaris parts.
• Do not over-fill the master cylinder fluid reservoir.
• Make sure the brake pedal returns freely and completely.
• Check and adjust master cylinder reservoir fluid level after pad service.
• Clean the master cylinder reservoir cap and the area above and around the reservoir before you remove the
cap. Cover the reservoir immediately after filling to prevent contamination. Make sure atmospheric vent on
reservoir is unobstructed.
• Elevate front wheels or rear axle after any brake system service and test for brake drag. Investigate cause if
brake drag is evident.
• Make sure floating caliper move freely on guide pins.
• Inspect caliper piston seals for foreign material that could prevent caliper pistons from returning freely; check for
leakage.
• Perform a brake burnishing procedure after installing new pads to maximize service life.
• DO NOT clean brake system components with petroleum based products. Use only approved brake cleaning
products.
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, Permatex™ Disc Brake Quiet (PN 2872113) 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.
Brake Noise Troubleshooting
Possible Cause Remedy
Dirt, dust, or imbedded material on pads or disc Spray disc and pads with CRC Brakleen™ or an equivalent
non-flammable aerosol brake cleaner. Remove pads and/
or disc hub to clean imbedded material from disc or pads.
Pad(s) dragging on disc (noise or premature pad wear)
Parking brake misadjusted
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)
Adjust (where applicable). Investigate / correct the
condition

Adjust. See Maintenance chapter. 
Set to proper level
Clean compensating port
Inspect. Repair as necessary
Clean piston(s) seal
Educate operator
Loose wheel hub, wheel bearings, brake disc Check wheel, hub, and disc for abnormal movement.
Brake disc warped or excessively worn Replace disc
Brake disc misaligned or loose Inspect and repair as necessary
Noise is from other source (axle, hub, disc or wheel) If noise does not change when brake is applied check
other sources. Inspect and repair as necessary
Wrong pad for conditions Use only Pure Polaris replacement pads. Optional softer
or harder pads may be available

Polaris RANGER RZR 170 Specifications

General

Brand	Polaris
Model	RANGER RZR 170
Category	Utility Vehicle
Language	English