9.34
9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
© Copyright 2013 Polaris Sales Inc.
REAR MASTER CYLINDER
Overview
Polaris disc brake systems are light weight, low
maintenance and perform well in the conditions ATVs
routinely encounter. However, 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.
• Perform a brake burnishing procedure after
installing new pads to maximize service life.
• Optional pads are available to suit conditions in
your area. Select a pad to fit riding style and
environment.
• Do not over-fill the master cylinder fluid reservoir.
• Make sure the brake lever and pedal returns freely
and completely.
• Adjust stop pin on caliper (if applicable) after pad
service.
• Check and adjust master cylinder reservoir fluid
level after pad service.
• Make sure atmospheric vent on reservoir is
unobstructed.
• Test for brake drag after any brake system service
and investigate cause if brake drag is evident.
• Make sure caliper moves freely on guide pins
(where applicable).
• Inspect caliper piston seals for foreign material
that could prevent caliper pistons from returning
freely.
CAUTION
Use only DOT-approved brake fluid as an assembly aid
for all procedures described in this chapter to prevent
brake system contamination.
DO NOT USE LUBRICANTS OF ANY KIND FOR
ASSEMBLY, AS THEIR USE CAN CAUSE RUBBER
COMPONENTS TO SWELL.
Rear Master Cylinder Exploded View (All Models)
BRAKES
