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9925723 R01 - 2015 RZR 900 Service Manual
© Copyright 2014 Polaris Industries Inc.
REAR BRAKE DISC
Rear Disc Inspection
1. Visually inspect disc for scoring, scratches, or
gouges. Replace disc if deep scratches are evident.
2. Use a 0-1″ micrometer and measure disc thickness at
eight different points around the pad contact surface.
Replace disc if worn beyond service limit.
Brake Disc Thickness
New: 0.188″ (4.78 mm)
Service Limit: 0.170″ (4.32 mm)
Brake Disc Thickness Variance
Service Limit: 0.002″ (0.051 mm)
Difference Between Measurements
3. Mount a dial indicator and measure disc runout.
Slowly rotate the disc and read total runout on the dial
indicator. Replace the disc if runout exceeds
specifications.
Brake Disc Runout:
Service Limit: 0.010″ (0.254 mm)
Rear Disc Replacement
1. Remove the rear brake caliper. (see Chapter 9 –
REAR CALIPER SERVICE, page
2. Remove wheel hub cotter pin