Polaris 2012 Sportsman Forest 500 International, Service Manual

Page: 359 / 432

9.29
BRAKES
9
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
REAR BRAKE DISC
Inspection
1. Visually inspect disc for scoring, scratches, or
gouges. Replace the disc if any deep scratches are
evident.
2. Use a micrometer and measure disc thickness at 8
different points around perimeter of disc. Replace
disc if worn beyond service limit.
3. Mount dial indicator and measure disc runout.
Replace the disc if runout exceeds specifications.
= In. / mm.
Brake Disc Thickness:
Service Limit: .170” (4.318 mm)
= In. / mm.
Brake Disc Thickness Variance:
Service Limit: .002” (.051 mm)
Between Measurements
Disc Thickness
= In. / mm.
Brake Disc Runout
Service Limit: .010” / .254 mm