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9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual
© Copyright Polaris Industries Inc.
TROUBLESHOOTING
BRAKES SQUEAL / POOR BRAKE
PERFORMANCE
• Air in system
• Water in system (brake fluid contaminated)
• Caliper/disc misaligned
• Caliper dirty or damaged
• Brake line damaged or lining ruptured
• Worn disc and/or friction pads
• Incorrectly adjusted stationary pad
• Worn or damaged master cylinder or components
• Damaged break pad noise insulator
PEDAL VIBRATION
• Disc damaged
• Disc worn (runout or thickness variance exceeds
service limit)
CALIPER OVERHEATS (BRAKES DRAG)
• Compensating port plugged
• Pad clearance set incorrectly
• Parking brake lever incorrectly adjusted
• Brake pedal binding or unable to return fully
• Parking brake left on
• Residue build up under caliper seals
• Operator riding brakes
BRAKES LOCK
• Alignment of caliper to disc
• Caliper pistons sticking
• Improper assembly of brake system components
BRAKE SYSTEM
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