Dual Hydraulic Brake Disc Inspection - Polaris Trail Blazer Service Manual

Inspection
1. Visually inspect disc for scoring, scratches, or
gouges. Replace the disc if any deep scratches are
evident.
2. Use a 0-1" micrometer and measure disc thickness
at 8 different points around perimeter of disc.
Replace disc if worn beyond service limit.
Brake Disc Thickness
New .177-.187" (4.496-4.750 mm)
Service Limit .167" (4.242 mm)
Brake Disc Thickness Variance
Service Limit .002" (.051 mm)
difference between measurements
3. Mount dial indicator and measure disc runout.
Replace the disc if runout exceeds specifications.
Brake Disc Runout
Service Limit .010" (.25 mm)
Polaris Sales Inc. 9.29
BRAKES
Dual Hydraulic Brake Disc
4/99